new extension: upml
Operator extension implementing an uniaxial perfectly matched layer (upml) This new pml implementation is going to replace the old split-field pmlpull/1/head
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887e07a394
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06bbec106f
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/*
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* Copyright (C) 2010 Thorsten Liebig (Thorsten.Liebig@gmx.de)
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "engine_ext_upml.h"
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#include "operator_ext_upml.h"
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#include "engine.h"
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#include "engine_sse.h"
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#include "tools/array_ops.h"
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Engine_Ext_UPML::Engine_Ext_UPML(Operator_Ext_UPML* op_ext) : Engine_Extension(op_ext)
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{
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m_Op_UPML = op_ext;
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//this ABC extension should be executed first!
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m_Priority = 1e6;
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volt = Create_N_3DArray<FDTD_FLOAT>(m_Op_UPML->m_numLines);
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volt_flux = Create_N_3DArray<FDTD_FLOAT>(m_Op_UPML->m_numLines);
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curr = Create_N_3DArray<FDTD_FLOAT>(m_Op_UPML->m_numLines);
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curr_flux = Create_N_3DArray<FDTD_FLOAT>(m_Op_UPML->m_numLines);
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}
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Engine_Ext_UPML::~Engine_Ext_UPML()
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{
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Delete_N_3DArray<FDTD_FLOAT>(volt,m_Op_UPML->m_numLines);
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volt=NULL;
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Delete_N_3DArray<FDTD_FLOAT>(volt_flux,m_Op_UPML->m_numLines);
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volt_flux=NULL;
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Delete_N_3DArray<FDTD_FLOAT>(curr,m_Op_UPML->m_numLines);
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curr=NULL;
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Delete_N_3DArray<FDTD_FLOAT>(curr_flux,m_Op_UPML->m_numLines);
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curr_flux=NULL;
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}
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void Engine_Ext_UPML::DoPreVoltageUpdates()
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{
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if (m_Eng==NULL)
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return;
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unsigned int pos[3];
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unsigned int loc_pos[3];
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for (loc_pos[0]=0;loc_pos[0]<m_Op_UPML->m_numLines[0];++loc_pos[0])
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{
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pos[0] = loc_pos[0] + m_Op_UPML->m_StartPos[0];
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for (loc_pos[1]=0;loc_pos[1]<m_Op_UPML->m_numLines[1];++loc_pos[1])
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{
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pos[1] = loc_pos[1] + m_Op_UPML->m_StartPos[1];
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for (loc_pos[2]=0;loc_pos[2]<m_Op_UPML->m_numLines[2];++loc_pos[2])
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{
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pos[2] = loc_pos[2] + m_Op_UPML->m_StartPos[2];
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volt[0][loc_pos[0]][loc_pos[1]][loc_pos[2]] = m_Op_UPML->vv[0][loc_pos[0]][loc_pos[1]][loc_pos[2]] * m_Eng->GetVolt(0,pos)
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- m_Op_UPML->vvfo[0][loc_pos[0]][loc_pos[1]][loc_pos[2]] * volt_flux[0][loc_pos[0]][loc_pos[1]][loc_pos[2]];
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volt[1][loc_pos[0]][loc_pos[1]][loc_pos[2]] = m_Op_UPML->vv[1][loc_pos[0]][loc_pos[1]][loc_pos[2]] * m_Eng->GetVolt(1,pos)
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- m_Op_UPML->vvfo[1][loc_pos[0]][loc_pos[1]][loc_pos[2]] * volt_flux[1][loc_pos[0]][loc_pos[1]][loc_pos[2]];
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volt[2][loc_pos[0]][loc_pos[1]][loc_pos[2]] = m_Op_UPML->vv[2][loc_pos[0]][loc_pos[1]][loc_pos[2]] * m_Eng->GetVolt(2,pos)
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- m_Op_UPML->vvfo[2][loc_pos[0]][loc_pos[1]][loc_pos[2]] * volt_flux[2][loc_pos[0]][loc_pos[1]][loc_pos[2]];
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m_Eng->SetVolt(0,pos, volt_flux[0][loc_pos[0]][loc_pos[1]][loc_pos[2]]);
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m_Eng->SetVolt(1,pos, volt_flux[1][loc_pos[0]][loc_pos[1]][loc_pos[2]]);
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m_Eng->SetVolt(2,pos, volt_flux[2][loc_pos[0]][loc_pos[1]][loc_pos[2]]);
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}
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}
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}
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}
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void Engine_Ext_UPML::DoPostVoltageUpdates()
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{
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if (m_Eng==NULL)
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return;
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unsigned int pos[3];
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unsigned int loc_pos[3];
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for (loc_pos[0]=0;loc_pos[0]<m_Op_UPML->m_numLines[0];++loc_pos[0])
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{
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pos[0] = loc_pos[0] + m_Op_UPML->m_StartPos[0];
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for (loc_pos[1]=0;loc_pos[1]<m_Op_UPML->m_numLines[1];++loc_pos[1])
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{
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pos[1] = loc_pos[1] + m_Op_UPML->m_StartPos[1];
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for (loc_pos[2]=0;loc_pos[2]<m_Op_UPML->m_numLines[2];++loc_pos[2])
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{
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pos[2] = loc_pos[2] + m_Op_UPML->m_StartPos[2];
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volt_flux[0][loc_pos[0]][loc_pos[1]][loc_pos[2]] = m_Eng->GetVolt(0,pos);
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volt_flux[1][loc_pos[0]][loc_pos[1]][loc_pos[2]] = m_Eng->GetVolt(1,pos);
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volt_flux[2][loc_pos[0]][loc_pos[1]][loc_pos[2]] = m_Eng->GetVolt(2,pos);
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m_Eng->SetVolt(0,pos, volt[0][loc_pos[0]][loc_pos[1]][loc_pos[2]] + m_Op_UPML->vvfn[0][loc_pos[0]][loc_pos[1]][loc_pos[2]] * volt_flux[0][loc_pos[0]][loc_pos[1]][loc_pos[2]]);
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m_Eng->SetVolt(1,pos, volt[1][loc_pos[0]][loc_pos[1]][loc_pos[2]] + m_Op_UPML->vvfn[1][loc_pos[0]][loc_pos[1]][loc_pos[2]] * volt_flux[1][loc_pos[0]][loc_pos[1]][loc_pos[2]]);
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m_Eng->SetVolt(2,pos, volt[2][loc_pos[0]][loc_pos[1]][loc_pos[2]] + m_Op_UPML->vvfn[2][loc_pos[0]][loc_pos[1]][loc_pos[2]] * volt_flux[2][loc_pos[0]][loc_pos[1]][loc_pos[2]]);
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}
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}
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}
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}
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void Engine_Ext_UPML::DoPreCurrentUpdates()
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{
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if (m_Eng==NULL)
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return;
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unsigned int pos[3];
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unsigned int loc_pos[3];
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for (loc_pos[0]=0;loc_pos[0]<m_Op_UPML->m_numLines[0];++loc_pos[0])
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{
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pos[0] = loc_pos[0] + m_Op_UPML->m_StartPos[0];
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for (loc_pos[1]=0;loc_pos[1]<m_Op_UPML->m_numLines[1];++loc_pos[1])
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{
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pos[1] = loc_pos[1] + m_Op_UPML->m_StartPos[1];
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for (loc_pos[2]=0;loc_pos[2]<m_Op_UPML->m_numLines[2];++loc_pos[2])
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{
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pos[2] = loc_pos[2] + m_Op_UPML->m_StartPos[2];
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curr[0][loc_pos[0]][loc_pos[1]][loc_pos[2]] = m_Op_UPML->ii[0][loc_pos[0]][loc_pos[1]][loc_pos[2]] * m_Eng->GetCurr(0,pos)
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- m_Op_UPML->iifo[0][loc_pos[0]][loc_pos[1]][loc_pos[2]] * curr_flux[0][loc_pos[0]][loc_pos[1]][loc_pos[2]];
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curr[1][loc_pos[0]][loc_pos[1]][loc_pos[2]] = m_Op_UPML->ii[1][loc_pos[0]][loc_pos[1]][loc_pos[2]] * m_Eng->GetCurr(1,pos)
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- m_Op_UPML->iifo[1][loc_pos[0]][loc_pos[1]][loc_pos[2]] * curr_flux[1][loc_pos[0]][loc_pos[1]][loc_pos[2]];
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curr[2][loc_pos[0]][loc_pos[1]][loc_pos[2]] = m_Op_UPML->ii[2][loc_pos[0]][loc_pos[1]][loc_pos[2]] * m_Eng->GetCurr(2,pos)
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- m_Op_UPML->iifo[2][loc_pos[0]][loc_pos[1]][loc_pos[2]] * curr_flux[2][loc_pos[0]][loc_pos[1]][loc_pos[2]];
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m_Eng->SetCurr(0,pos, curr_flux[0][loc_pos[0]][loc_pos[1]][loc_pos[2]]);
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m_Eng->SetCurr(1,pos, curr_flux[1][loc_pos[0]][loc_pos[1]][loc_pos[2]]);
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m_Eng->SetCurr(2,pos, curr_flux[2][loc_pos[0]][loc_pos[1]][loc_pos[2]]);
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}
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}
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}
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}
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void Engine_Ext_UPML::DoPostCurrentUpdates()
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{
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if (m_Eng==NULL)
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return;
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unsigned int pos[3];
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unsigned int loc_pos[3];
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for (loc_pos[0]=0;loc_pos[0]<m_Op_UPML->m_numLines[0];++loc_pos[0])
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{
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pos[0] = loc_pos[0] + m_Op_UPML->m_StartPos[0];
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for (loc_pos[1]=0;loc_pos[1]<m_Op_UPML->m_numLines[1];++loc_pos[1])
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{
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pos[1] = loc_pos[1] + m_Op_UPML->m_StartPos[1];
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for (loc_pos[2]=0;loc_pos[2]<m_Op_UPML->m_numLines[2];++loc_pos[2])
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{
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pos[2] = loc_pos[2] + m_Op_UPML->m_StartPos[2];
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curr_flux[0][loc_pos[0]][loc_pos[1]][loc_pos[2]] = m_Eng->GetCurr(0,pos);
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curr_flux[1][loc_pos[0]][loc_pos[1]][loc_pos[2]] = m_Eng->GetCurr(1,pos);
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curr_flux[2][loc_pos[0]][loc_pos[1]][loc_pos[2]] = m_Eng->GetCurr(2,pos);
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m_Eng->SetCurr(0,pos, curr[0][loc_pos[0]][loc_pos[1]][loc_pos[2]] + m_Op_UPML->iifn[0][loc_pos[0]][loc_pos[1]][loc_pos[2]] * curr_flux[0][loc_pos[0]][loc_pos[1]][loc_pos[2]]);
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m_Eng->SetCurr(1,pos, curr[1][loc_pos[0]][loc_pos[1]][loc_pos[2]] + m_Op_UPML->iifn[1][loc_pos[0]][loc_pos[1]][loc_pos[2]] * curr_flux[1][loc_pos[0]][loc_pos[1]][loc_pos[2]]);
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m_Eng->SetCurr(2,pos, curr[2][loc_pos[0]][loc_pos[1]][loc_pos[2]] + m_Op_UPML->iifn[2][loc_pos[0]][loc_pos[1]][loc_pos[2]] * curr_flux[2][loc_pos[0]][loc_pos[1]][loc_pos[2]]);
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}
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}
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}
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}
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@ -0,0 +1,48 @@
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/*
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* Copyright (C) 2010 Thorsten Liebig (Thorsten.Liebig@gmx.de)
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef ENGINE_EXT_UPML_H
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#define ENGINE_EXT_UPML_H
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#include "engine_extension.h"
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#include "engine.h"
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#include "operator.h"
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class Operator_Ext_UPML;
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class Engine_Ext_UPML : public Engine_Extension
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{
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public:
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Engine_Ext_UPML(Operator_Ext_UPML* op_ext);
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virtual ~Engine_Ext_UPML();
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virtual void DoPreVoltageUpdates();
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virtual void DoPostVoltageUpdates();
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virtual void DoPreCurrentUpdates();
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virtual void DoPostCurrentUpdates();
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protected:
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Operator_Ext_UPML* m_Op_UPML;
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FDTD_FLOAT**** volt;
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FDTD_FLOAT**** curr;
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FDTD_FLOAT**** volt_flux;
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FDTD_FLOAT**** curr_flux;
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};
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#endif // ENGINE_EXT_UPML_H
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}
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}
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}
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}
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//Apply PEC to all boundary's
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bool PEC[6]={1,1,1,1,1,1};
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//make an exception for BC == -1
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for (int n=0;n<6;++n)
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if ((m_BC[n]==-1))
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PEC[n] = false;
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ApplyElectricBC(PEC);
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CalcPEC();
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bool PMC[6];
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for (int n=0;n<6;++n)
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PMC[n] = m_BC[n]==1;
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ApplyMagneticBC(PMC);
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InitExcitation();
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if (CalcFieldExcitation()==false) return -1;
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//all information available for extension... create now...
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//all information available for extension... create now...
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for (size_t n=0;n<m_Op_exts.size();++n)
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for (size_t n=0;n<m_Op_exts.size();++n)
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m_Op_exts.at(n)->BuildExtension();
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m_Op_exts.at(n)->BuildExtension();
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@ -576,25 +595,6 @@ int Operator::CalcECOperator()
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delete[] EC_R[n];EC_R[n]=NULL;
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delete[] EC_R[n];EC_R[n]=NULL;
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}
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}
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//Apply PEC to all boundary's
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bool PEC[6]={1,1,1,1,1,1};
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//exception for pml boundaries
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for (int n=0;n<6;++n)
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if ((m_BC[n]==3) || (m_BC[n]==-1))
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PEC[n] = false;
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ApplyElectricBC(PEC);
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InitExcitation();
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if (CalcFieldExcitation()==false) return -1;
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CalcPEC();
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bool PMC[6];
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for (int n=0;n<6;++n)
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PMC[n] = m_BC[n]==1;
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ApplyMagneticBC(PMC);
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return 0;
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return 0;
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}
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}
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@ -654,6 +654,15 @@ void Operator::ApplyMagneticBC(bool* dirs)
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GetIV(nP,pos[0],pos[1],pos[2]) *= (FDTD_FLOAT)!dirs[2*n+1];
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GetIV(nP,pos[0],pos[1],pos[2]) *= (FDTD_FLOAT)!dirs[2*n+1];
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GetII(nPP,pos[0],pos[1],pos[2]) *= (FDTD_FLOAT)!dirs[2*n+1];
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GetII(nPP,pos[0],pos[1],pos[2]) *= (FDTD_FLOAT)!dirs[2*n+1];
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GetIV(nPP,pos[0],pos[1],pos[2]) *= (FDTD_FLOAT)!dirs[2*n+1];
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GetIV(nPP,pos[0],pos[1],pos[2]) *= (FDTD_FLOAT)!dirs[2*n+1];
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//the last current lines are outside the FDTD domain and cannot be iterated by the FDTD engine
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pos[n]=numLines[n]-1;
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GetII(n,pos[0],pos[1],pos[2]) = 0;
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GetIV(n,pos[0],pos[1],pos[2]) = 0;
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GetII(nP,pos[0],pos[1],pos[2]) = 0;
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||||||
|
GetIV(nP,pos[0],pos[1],pos[2]) = 0;
|
||||||
|
GetII(nPP,pos[0],pos[1],pos[2]) = 0;
|
||||||
|
GetIV(nPP,pos[0],pos[1],pos[2]) = 0;
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
|
@ -0,0 +1,321 @@
|
||||||
|
/*
|
||||||
|
* Copyright (C) 2010 Thorsten Liebig (Thorsten.Liebig@gmx.de)
|
||||||
|
*
|
||||||
|
* This program is free software: you can redistribute it and/or modify
|
||||||
|
* it under the terms of the GNU General Public License as published by
|
||||||
|
* the Free Software Foundation, either version 3 of the License, or
|
||||||
|
* (at your option) any later version.
|
||||||
|
*
|
||||||
|
* This program is distributed in the hope that it will be useful,
|
||||||
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||||
|
* GNU General Public License for more details.
|
||||||
|
*
|
||||||
|
* You should have received a copy of the GNU General Public License
|
||||||
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#include "operator_ext_upml.h"
|
||||||
|
#include "operator_cylinder.h"
|
||||||
|
#include "engine_ext_upml.h"
|
||||||
|
#include "tools/array_ops.h"
|
||||||
|
#include "fparser.hh"
|
||||||
|
|
||||||
|
Operator_Ext_UPML::Operator_Ext_UPML(Operator* op) : Operator_Extension(op)
|
||||||
|
{
|
||||||
|
m_GradingFunction = new FunctionParser();
|
||||||
|
//default grading function
|
||||||
|
SetGradingFunction(" -log(1e-6)*log(2.5)/(2*dl*pow(2.5,W/dl)-1) * pow(2.5, D/dl) / Z ");
|
||||||
|
|
||||||
|
for (int n=0;n<6;++n)
|
||||||
|
{
|
||||||
|
m_BC[n]=0;
|
||||||
|
m_Size[n]=0;
|
||||||
|
}
|
||||||
|
for (int n=0;n<3;++n)
|
||||||
|
{
|
||||||
|
m_StartPos[n]=0;
|
||||||
|
m_numLines[n]=0;
|
||||||
|
}
|
||||||
|
|
||||||
|
vv = NULL;
|
||||||
|
vvfo = NULL;
|
||||||
|
vvfn = NULL;
|
||||||
|
ii = NULL;
|
||||||
|
iifo = NULL;
|
||||||
|
iifn = NULL;
|
||||||
|
}
|
||||||
|
|
||||||
|
Operator_Ext_UPML::~Operator_Ext_UPML()
|
||||||
|
{
|
||||||
|
delete m_GradingFunction;
|
||||||
|
m_GradingFunction = NULL;
|
||||||
|
DeleteOp();
|
||||||
|
}
|
||||||
|
|
||||||
|
bool Operator_Ext_UPML::Create_UPML(Operator* op, int BC[6], unsigned int size[6], string gradFunc)
|
||||||
|
{
|
||||||
|
Operator_Ext_UPML* op_ext_upml=NULL;
|
||||||
|
unsigned int start[3]={0 ,0 ,0};
|
||||||
|
unsigned int stop[3] ={op->GetNumberOfLines(0)-1,op->GetNumberOfLines(1)-1,op->GetNumberOfLines(2)-1};
|
||||||
|
|
||||||
|
//create a pml in x-direction over the full width of yz-space
|
||||||
|
if (BC[0]==3)
|
||||||
|
{
|
||||||
|
op_ext_upml = new Operator_Ext_UPML(op);
|
||||||
|
op_ext_upml->SetGradingFunction(gradFunc);
|
||||||
|
start[0]=0;
|
||||||
|
stop[0] =size[0];
|
||||||
|
op_ext_upml->SetBoundaryCondition(BC, size);
|
||||||
|
op_ext_upml->SetRange(start,stop);
|
||||||
|
op->AddExtension(op_ext_upml);
|
||||||
|
}
|
||||||
|
if (BC[1]==3)
|
||||||
|
{
|
||||||
|
op_ext_upml = new Operator_Ext_UPML(op);
|
||||||
|
op_ext_upml->SetGradingFunction(gradFunc);
|
||||||
|
start[0]=op->GetNumberOfLines(0)-1-size[1];
|
||||||
|
stop[0] =op->GetNumberOfLines(0)-1;
|
||||||
|
op_ext_upml->SetBoundaryCondition(BC, size);
|
||||||
|
op_ext_upml->SetRange(start,stop);
|
||||||
|
op->AddExtension(op_ext_upml);
|
||||||
|
}
|
||||||
|
|
||||||
|
//create a pml in y-direction over the xz-space (if a pml in x-direction already exists, skip that corner regions)
|
||||||
|
start[0]=(size[0]+1)*(BC[0]==3);
|
||||||
|
stop[0] =op->GetNumberOfLines(0)-1-(size[0]+1)*(BC[1]==3);
|
||||||
|
|
||||||
|
if (BC[2]==3)
|
||||||
|
{
|
||||||
|
op_ext_upml = new Operator_Ext_UPML(op);
|
||||||
|
op_ext_upml->SetGradingFunction(gradFunc);
|
||||||
|
start[1]=0;
|
||||||
|
stop[1] =size[2];
|
||||||
|
op_ext_upml->SetBoundaryCondition(BC, size);
|
||||||
|
op_ext_upml->SetRange(start,stop);
|
||||||
|
op->AddExtension(op_ext_upml);
|
||||||
|
}
|
||||||
|
if (BC[3]==3)
|
||||||
|
{
|
||||||
|
op_ext_upml = new Operator_Ext_UPML(op);
|
||||||
|
op_ext_upml->SetGradingFunction(gradFunc);
|
||||||
|
start[1]=op->GetNumberOfLines(1)-1-size[3];
|
||||||
|
stop[1] =op->GetNumberOfLines(1)-1;
|
||||||
|
op_ext_upml->SetBoundaryCondition(BC, size);
|
||||||
|
op_ext_upml->SetRange(start,stop);
|
||||||
|
op->AddExtension(op_ext_upml);
|
||||||
|
}
|
||||||
|
|
||||||
|
//create a pml in z-direction over the xy-space (if a pml in x- and/or y-direction already exists, skip that corner/edge regions)
|
||||||
|
start[1]=(size[2]+1)*(BC[2]==3);
|
||||||
|
stop[1] =op->GetNumberOfLines(1)-1-(size[3]+1)*(BC[3]==3);
|
||||||
|
|
||||||
|
if (BC[4]==3)
|
||||||
|
{
|
||||||
|
op_ext_upml = new Operator_Ext_UPML(op);
|
||||||
|
op_ext_upml->SetGradingFunction(gradFunc);
|
||||||
|
start[2]=0;
|
||||||
|
stop[2] =size[4];
|
||||||
|
op_ext_upml->SetBoundaryCondition(BC, size);
|
||||||
|
op_ext_upml->SetRange(start,stop);
|
||||||
|
op->AddExtension(op_ext_upml);
|
||||||
|
}
|
||||||
|
if (BC[5]==3)
|
||||||
|
{
|
||||||
|
op_ext_upml = new Operator_Ext_UPML(op);
|
||||||
|
op_ext_upml->SetGradingFunction(gradFunc);
|
||||||
|
start[2]=op->GetNumberOfLines(2)-1-size[5];
|
||||||
|
stop[2] =op->GetNumberOfLines(2)-1;
|
||||||
|
op_ext_upml->SetBoundaryCondition(BC, size);
|
||||||
|
op_ext_upml->SetRange(start,stop);
|
||||||
|
op->AddExtension(op_ext_upml);
|
||||||
|
}
|
||||||
|
|
||||||
|
return true;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
void Operator_Ext_UPML::DeleteOp()
|
||||||
|
{
|
||||||
|
Delete_N_3DArray<FDTD_FLOAT>(vv,m_numLines);
|
||||||
|
vv = NULL;
|
||||||
|
Delete_N_3DArray<FDTD_FLOAT>(vvfo,m_numLines);
|
||||||
|
vvfo = NULL;
|
||||||
|
Delete_N_3DArray<FDTD_FLOAT>(vvfn,m_numLines);
|
||||||
|
vvfn = NULL;
|
||||||
|
Delete_N_3DArray<FDTD_FLOAT>(ii,m_numLines);
|
||||||
|
ii = NULL;
|
||||||
|
Delete_N_3DArray<FDTD_FLOAT>(iifo,m_numLines);
|
||||||
|
iifo = NULL;
|
||||||
|
Delete_N_3DArray<FDTD_FLOAT>(iifn,m_numLines);
|
||||||
|
iifn = NULL;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
bool Operator_Ext_UPML::SetGradingFunction(string func)
|
||||||
|
{
|
||||||
|
if (func.empty())
|
||||||
|
return true;
|
||||||
|
|
||||||
|
m_GradFunc = func;
|
||||||
|
int res = m_GradingFunction->Parse(m_GradFunc.c_str(), "D,dl,W,Z,N");
|
||||||
|
if(res < 0) return true;
|
||||||
|
|
||||||
|
cerr << "Operator_Ext_UPML::SetGradingFunction: Warning, an error occured parsing the pml grading function (see below) ..." << endl;
|
||||||
|
cerr << func << "\n" << string(res, ' ') << "^\n" << m_GradingFunction->ErrorMsg() << "\n";
|
||||||
|
return false;
|
||||||
|
}
|
||||||
|
|
||||||
|
void Operator_Ext_UPML::CalcGradingKappa(int ny, unsigned int pos[3], double Zm[3], double kappa_v[3], double kappa_i[3])
|
||||||
|
{
|
||||||
|
double depth=0;
|
||||||
|
double width=0;
|
||||||
|
for (int n=0;n<3;++n)
|
||||||
|
{
|
||||||
|
if ((pos[n] <= m_Size[2*n]) && (m_BC[2*n]==3)) //lower pml in n-dir
|
||||||
|
{
|
||||||
|
width = (m_Op->GetDiscLine(n,m_Size[2*n]) - m_Op->GetDiscLine(n,0))*m_Op->GetGridDelta();
|
||||||
|
depth = width - (m_Op->GetDiscLine(n,pos[n]) - m_Op->GetDiscLine(n,0))*m_Op->GetGridDelta();
|
||||||
|
|
||||||
|
if (n==ny)
|
||||||
|
depth-=m_Op->GetMeshDelta(n,pos)/2;
|
||||||
|
double vars[5] = {depth, width/m_Size[2*n], width, Zm[n], m_Size[2*n]};
|
||||||
|
if (depth>0)
|
||||||
|
kappa_v[n] = m_GradingFunction->Eval(vars);
|
||||||
|
else
|
||||||
|
kappa_v[n]=0;
|
||||||
|
if (n==ny)
|
||||||
|
depth+=m_Op->GetMeshDelta(n,pos)/2;
|
||||||
|
|
||||||
|
if (n!=ny)
|
||||||
|
depth-=m_Op->GetMeshDelta(n,pos)/2;
|
||||||
|
if (depth<0)
|
||||||
|
depth=0;
|
||||||
|
vars[0]=depth;
|
||||||
|
if (depth>0)
|
||||||
|
kappa_i[n] = m_GradingFunction->Eval(vars);
|
||||||
|
else
|
||||||
|
kappa_i[n] = 0;
|
||||||
|
}
|
||||||
|
else if ((pos[n] >= m_Op->GetNumberOfLines(n) -1 -m_Size[2*n+1]) && (m_BC[2*n+1]==3)) //upper pml in n-dir
|
||||||
|
{
|
||||||
|
width = (m_Op->GetDiscLine(n,m_Op->GetNumberOfLines(n)-1) - m_Op->GetDiscLine(n,m_Op->GetNumberOfLines(n)-m_Size[2*n+1]-1))*m_Op->GetGridDelta();
|
||||||
|
depth = width - (m_Op->GetDiscLine(n,m_Op->GetNumberOfLines(n)-1) - m_Op->GetDiscLine(n,pos[n]))*m_Op->GetGridDelta();
|
||||||
|
|
||||||
|
if (n==ny)
|
||||||
|
depth+=m_Op->GetMeshDelta(n,pos)/2;
|
||||||
|
double vars[5] = {depth, width/(m_Size[2*n]), width, Zm[n], m_Size[2*n]};
|
||||||
|
if (depth>0)
|
||||||
|
kappa_v[n] = m_GradingFunction->Eval(vars);
|
||||||
|
else
|
||||||
|
kappa_v[n]=0;
|
||||||
|
if (n==ny)
|
||||||
|
depth-=m_Op->GetMeshDelta(n,pos)/2;
|
||||||
|
|
||||||
|
if (n!=ny)
|
||||||
|
depth+=m_Op->GetMeshDelta(n,pos)/2;
|
||||||
|
if (depth>width)
|
||||||
|
depth=0;
|
||||||
|
vars[0]=depth;
|
||||||
|
if (depth>0)
|
||||||
|
kappa_i[n] = m_GradingFunction->Eval(vars);
|
||||||
|
else
|
||||||
|
kappa_i[n]=0;
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
kappa_v[n] = 0;
|
||||||
|
kappa_i[n] = 0;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
bool Operator_Ext_UPML::BuildExtension()
|
||||||
|
{
|
||||||
|
/*Calculate the upml coefficients as defined in:
|
||||||
|
Allen Taflove, computational electrodynamics - the FDTD method, third edition, chapter 7.8, pages 297-300
|
||||||
|
- modified by Thorsten Liebig to match the equivalent circuit (EC) FDTD method
|
||||||
|
- kappa is used for conductivities (instead of sigma)
|
||||||
|
*/
|
||||||
|
if (m_Op==NULL)
|
||||||
|
return false;
|
||||||
|
|
||||||
|
DeleteOp();
|
||||||
|
vv = Create_N_3DArray<FDTD_FLOAT>(m_numLines);
|
||||||
|
vvfo = Create_N_3DArray<FDTD_FLOAT>(m_numLines);
|
||||||
|
vvfn = Create_N_3DArray<FDTD_FLOAT>(m_numLines);
|
||||||
|
ii = Create_N_3DArray<FDTD_FLOAT>(m_numLines);
|
||||||
|
iifo = Create_N_3DArray<FDTD_FLOAT>(m_numLines);
|
||||||
|
iifn = Create_N_3DArray<FDTD_FLOAT>(m_numLines);
|
||||||
|
|
||||||
|
unsigned int pos[3];
|
||||||
|
unsigned int loc_pos[3];
|
||||||
|
int nP,nPP;
|
||||||
|
double kappa_v[3]={0,0,0};
|
||||||
|
double kappa_i[3]={0,0,0};
|
||||||
|
double eff_Mat[3][4];
|
||||||
|
double Zm[3];
|
||||||
|
double dT = m_Op->GetTimestep();
|
||||||
|
|
||||||
|
for (loc_pos[0]=0;loc_pos[0]<m_numLines[0];++loc_pos[0])
|
||||||
|
{
|
||||||
|
pos[0] = loc_pos[0] + m_StartPos[0];
|
||||||
|
for (loc_pos[1]=0;loc_pos[1]<m_numLines[1];++loc_pos[1])
|
||||||
|
{
|
||||||
|
pos[1] = loc_pos[1] + m_StartPos[1];
|
||||||
|
for (loc_pos[2]=0;loc_pos[2]<m_numLines[2];++loc_pos[2])
|
||||||
|
{
|
||||||
|
pos[2] = loc_pos[2] + m_StartPos[2];
|
||||||
|
//calc kappa here for all dir ...
|
||||||
|
m_Op->Calc_EffMatPos(0,pos,eff_Mat[0]);
|
||||||
|
m_Op->Calc_EffMatPos(1,pos,eff_Mat[1]);
|
||||||
|
m_Op->Calc_EffMatPos(2,pos,eff_Mat[2]);
|
||||||
|
Zm[0] = sqrt(eff_Mat[0][2]/eff_Mat[0][0]);
|
||||||
|
Zm[1] = sqrt(eff_Mat[1][2]/eff_Mat[1][0]);
|
||||||
|
Zm[2] = sqrt(eff_Mat[2][2]/eff_Mat[2][0]);
|
||||||
|
for (int n=0;n<3;++n)
|
||||||
|
{
|
||||||
|
CalcGradingKappa(n, pos,Zm,kappa_v,kappa_i);
|
||||||
|
nP = (n+1)%3;
|
||||||
|
nPP = (n+2)%3;
|
||||||
|
//check if pos is on PEC
|
||||||
|
if ( (m_Op->GetVV(n,pos[0],pos[1],pos[2]) + m_Op->GetVI(n,pos[0],pos[1],pos[2])) != 0 )
|
||||||
|
{
|
||||||
|
//modify the original operator to perform eq. (7.85) by the main engine (EC-FDTD: equation is multiplied by delta_n)
|
||||||
|
//the engine extension will replace the original voltages with the "voltage flux" (volt*eps0) prior to the voltage updates
|
||||||
|
//after the updates are done the extension will calculate the new voltages (see below) and place them back into the main field domain
|
||||||
|
m_Op->GetVV(n,pos[0],pos[1],pos[2]) = (2*__EPS0__ - kappa_v[nP]*dT) / (2*__EPS0__ + kappa_v[nP]*dT);
|
||||||
|
m_Op->GetVI(n,pos[0],pos[1],pos[2]) = (2*__EPS0__*dT) / (2*__EPS0__ + kappa_v[nP]*dT) * m_Op->GetEdgeLength(n,pos) / m_Op->GetEdgeArea(n,pos);
|
||||||
|
|
||||||
|
//operators needed by eq. (7.88) to calculate new voltages from old voltages and old and new "voltage fluxes"
|
||||||
|
vv [n][loc_pos[0]][loc_pos[1]][loc_pos[2]] = (2*__EPS0__ - kappa_v[nPP]*dT) / (2*__EPS0__ + kappa_v[nPP]*dT);
|
||||||
|
vvfn[n][loc_pos[0]][loc_pos[1]][loc_pos[2]] = (2*__EPS0__ + kappa_v[n]*dT) / (2*__EPS0__ + kappa_v[nPP]*dT)/eff_Mat[n][0];
|
||||||
|
vvfo[n][loc_pos[0]][loc_pos[1]][loc_pos[2]] = (2*__EPS0__ - kappa_v[n]*dT) / (2*__EPS0__ + kappa_v[nPP]*dT)/eff_Mat[n][0];
|
||||||
|
}
|
||||||
|
|
||||||
|
//check if pos is on PMC
|
||||||
|
if ( (m_Op->GetII(n,pos[0],pos[1],pos[2]) + m_Op->GetIV(n,pos[0],pos[1],pos[2])) != 0 )
|
||||||
|
{
|
||||||
|
//modify the original operator to perform eq. (7.89) by the main engine (EC-FDTD: equation is multiplied by delta_n)
|
||||||
|
//the engine extension will replace the original currents with the "current flux" (curr*mu0) prior to the current updates
|
||||||
|
//after the updates are done the extension will calculate the new currents (see below) and place them back into the main field domain
|
||||||
|
m_Op->GetII(n,pos[0],pos[1],pos[2]) = (2*__EPS0__ - kappa_i[nP]*dT) / (2*__EPS0__ + kappa_i[nP]*dT);
|
||||||
|
m_Op->GetIV(n,pos[0],pos[1],pos[2]) = (2*__EPS0__*dT) / (2*__EPS0__ + kappa_i[nP]*dT) * m_Op->GetEdgeLength(n,pos,true) / m_Op->GetEdgeArea(n,pos,true);
|
||||||
|
|
||||||
|
//operators needed by eq. (7.90) to calculate new currents from old currents and old and new "current fluxes"
|
||||||
|
ii [n][loc_pos[0]][loc_pos[1]][loc_pos[2]] = (2*__EPS0__ - kappa_i[nPP]*dT) / (2*__EPS0__ + kappa_i[nPP]*dT);
|
||||||
|
iifn[n][loc_pos[0]][loc_pos[1]][loc_pos[2]] = (2*__EPS0__ + kappa_i[n]*dT) / (2*__EPS0__ + kappa_i[nPP]*dT)/eff_Mat[n][2];
|
||||||
|
iifo[n][loc_pos[0]][loc_pos[1]][loc_pos[2]] = (2*__EPS0__ - kappa_i[n]*dT) / (2*__EPS0__ + kappa_i[nPP]*dT)/eff_Mat[n][2];
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
return true;
|
||||||
|
}
|
||||||
|
|
||||||
|
Engine_Extension* Operator_Ext_UPML::CreateEngineExtention()
|
||||||
|
{
|
||||||
|
Engine_Ext_UPML* eng_ext = new Engine_Ext_UPML(this);
|
||||||
|
return eng_ext;
|
||||||
|
}
|
|
@ -0,0 +1,88 @@
|
||||||
|
/*
|
||||||
|
* Copyright (C) 2010 Thorsten Liebig (Thorsten.Liebig@gmx.de)
|
||||||
|
*
|
||||||
|
* This program is free software: you can redistribute it and/or modify
|
||||||
|
* it under the terms of the GNU General Public License as published by
|
||||||
|
* the Free Software Foundation, either version 3 of the License, or
|
||||||
|
* (at your option) any later version.
|
||||||
|
*
|
||||||
|
* This program is distributed in the hope that it will be useful,
|
||||||
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||||
|
* GNU General Public License for more details.
|
||||||
|
*
|
||||||
|
* You should have received a copy of the GNU General Public License
|
||||||
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifndef OPERATOR_EXT_UPML_H
|
||||||
|
#define OPERATOR_EXT_UPML_H
|
||||||
|
|
||||||
|
#include "operator.h"
|
||||||
|
#include "operator_extension.h"
|
||||||
|
|
||||||
|
class FunctionParser;
|
||||||
|
|
||||||
|
//! Operator extension implemention an uniaxial perfectly matched layer (upml)
|
||||||
|
/*
|
||||||
|
The priority for this extension should be the highest of all extensions since this operator will use the main engine to perform vital parts in the upml implementation.
|
||||||
|
Therefore the voltages and currents as well as the operator are replaced during these update process.
|
||||||
|
This extension is propably incompatible with the most other extensions operating in the same regions.
|
||||||
|
*/
|
||||||
|
class Operator_Ext_UPML : public Operator_Extension
|
||||||
|
{
|
||||||
|
friend class Engine_Ext_UPML;
|
||||||
|
public:
|
||||||
|
virtual ~Operator_Ext_UPML();
|
||||||
|
|
||||||
|
void SetBoundaryCondition(int* BCs, unsigned int size[6]) {for (int n=0;n<6;++n) {m_BC[n]=BCs[n];m_Size[n]=size[n];}}
|
||||||
|
|
||||||
|
void SetRange(const unsigned int start[3], const unsigned int stop[3]) {for (int n=0;n<3;++n) {m_StartPos[n]=start[n];m_numLines[n]=stop[n]-start[n]+1;}}
|
||||||
|
|
||||||
|
//! Set the grading function for the pml
|
||||||
|
/*!
|
||||||
|
Define the pml grading grading function.
|
||||||
|
Predefined variables in this grading function are:
|
||||||
|
D = depth in the pml in meter
|
||||||
|
dl = mesh delta inside the pml in meter
|
||||||
|
W = width (length) of the pml in meter
|
||||||
|
N = number of cells for the pml
|
||||||
|
Z = wave impedance at the current depth and position
|
||||||
|
example: SetGradingFunction("-log(1e-6)*log(2.5)/(2*dl*pow(2.5,W/dl)-1) * pow(2.5, D/dl) / Z");
|
||||||
|
|
||||||
|
An empty function string will be ignored.
|
||||||
|
*/
|
||||||
|
virtual bool SetGradingFunction(string func);
|
||||||
|
|
||||||
|
virtual bool BuildExtension();
|
||||||
|
|
||||||
|
virtual Engine_Extension* CreateEngineExtention();
|
||||||
|
|
||||||
|
virtual string GetExtensionName() const {return string("Uniaxial PML Extension");}
|
||||||
|
|
||||||
|
//! Create the UPML
|
||||||
|
static bool Create_UPML(Operator* op, int BC[6], unsigned int size[6], string gradFunc);
|
||||||
|
|
||||||
|
protected:
|
||||||
|
Operator_Ext_UPML(Operator* op);
|
||||||
|
int m_BC[6];
|
||||||
|
unsigned int m_Size[6];
|
||||||
|
|
||||||
|
unsigned int m_StartPos[3];
|
||||||
|
unsigned int m_numLines[3];
|
||||||
|
|
||||||
|
string m_GradFunc;
|
||||||
|
FunctionParser* m_GradingFunction;
|
||||||
|
|
||||||
|
void CalcGradingKappa(int ny, unsigned int pos[3], double Zm[3], double kappa_v[3], double kappa_i[3]);
|
||||||
|
|
||||||
|
void DeleteOp();
|
||||||
|
FDTD_FLOAT**** vv; //calc new voltage from old voltage
|
||||||
|
FDTD_FLOAT**** vvfo; //calc new voltage from old voltage flux
|
||||||
|
FDTD_FLOAT**** vvfn; //calc new voltage from new voltage flux
|
||||||
|
FDTD_FLOAT**** ii; //calc new current from old current
|
||||||
|
FDTD_FLOAT**** iifo; //calc new current from old current flux
|
||||||
|
FDTD_FLOAT**** iifn; //calc new current from new current flux
|
||||||
|
};
|
||||||
|
|
||||||
|
#endif // OPERATOR_EXT_UPML_H
|
|
@ -84,7 +84,9 @@ SOURCES += main.cpp \
|
||||||
FDTD/processmodematch.cpp \
|
FDTD/processmodematch.cpp \
|
||||||
FDTD/operator_cylindermultigrid.cpp \
|
FDTD/operator_cylindermultigrid.cpp \
|
||||||
FDTD/engine_cylindermultigrid.cpp \
|
FDTD/engine_cylindermultigrid.cpp \
|
||||||
FDTD/engine_ext_cylindermultigrid.cpp
|
FDTD/engine_ext_cylindermultigrid.cpp \
|
||||||
|
FDTD/operator_ext_upml.cpp \
|
||||||
|
FDTD/engine_ext_upml.cpp
|
||||||
HEADERS += tools/ErrorMsg.h \
|
HEADERS += tools/ErrorMsg.h \
|
||||||
tools/AdrOp.h \
|
tools/AdrOp.h \
|
||||||
tools/constants.h \
|
tools/constants.h \
|
||||||
|
@ -126,7 +128,9 @@ HEADERS += tools/ErrorMsg.h \
|
||||||
FDTD/operator_cylindermultigrid.h \
|
FDTD/operator_cylindermultigrid.h \
|
||||||
FDTD/engine_cylindermultigrid.h \
|
FDTD/engine_cylindermultigrid.h \
|
||||||
FDTD/engine_ext_cylindermultigrid.h \
|
FDTD/engine_ext_cylindermultigrid.h \
|
||||||
tools/aligned_allocator.h
|
tools/aligned_allocator.h \
|
||||||
|
FDTD/operator_ext_upml.h \
|
||||||
|
FDTD/engine_ext_upml.h
|
||||||
QMAKE_CXXFLAGS_RELEASE = -O3 \
|
QMAKE_CXXFLAGS_RELEASE = -O3 \
|
||||||
-g \
|
-g \
|
||||||
-march=native
|
-march=native
|
||||||
|
|
|
@ -24,6 +24,7 @@
|
||||||
#include "FDTD/operator_multithread.h"
|
#include "FDTD/operator_multithread.h"
|
||||||
#include "FDTD/operator_ext_mur_abc.h"
|
#include "FDTD/operator_ext_mur_abc.h"
|
||||||
#include "FDTD/operator_ext_pml_sf.h"
|
#include "FDTD/operator_ext_pml_sf.h"
|
||||||
|
#include "FDTD/operator_ext_upml.h"
|
||||||
#include "FDTD/processvoltage.h"
|
#include "FDTD/processvoltage.h"
|
||||||
#include "FDTD/processcurrent.h"
|
#include "FDTD/processcurrent.h"
|
||||||
#include "FDTD/process_efield.h"
|
#include "FDTD/process_efield.h"
|
||||||
|
@ -191,7 +192,7 @@ bool openEMS::SetupBoundaryConditions(TiXmlElement* BC)
|
||||||
{
|
{
|
||||||
int EC; //error code of tinyxml
|
int EC; //error code of tinyxml
|
||||||
int bounds[6] = {0,0,0,0,0,0}; //default boundary cond. (PEC)
|
int bounds[6] = {0,0,0,0,0,0}; //default boundary cond. (PEC)
|
||||||
int pml_size[6] = {8,8,8,8,8,8}; //default pml size
|
unsigned int pml_size[6] = {8,8,8,8,8,8}; //default pml size
|
||||||
string s_bc;
|
string s_bc;
|
||||||
const char* tmp = BC->Attribute("PML_Grading");
|
const char* tmp = BC->Attribute("PML_Grading");
|
||||||
string pml_gradFunc;
|
string pml_gradFunc;
|
||||||
|
@ -244,7 +245,9 @@ bool openEMS::SetupBoundaryConditions(TiXmlElement* BC)
|
||||||
FDTD_Op->AddExtension(op_ext_mur);
|
FDTD_Op->AddExtension(op_ext_mur);
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
Build_Split_Field_PML(FDTD_Op,bounds,pml_size,pml_gradFunc);
|
|
||||||
|
//create the upml
|
||||||
|
Operator_Ext_UPML::Create_UPML(FDTD_Op,bounds,pml_size,pml_gradFunc);
|
||||||
|
|
||||||
return true;
|
return true;
|
||||||
}
|
}
|
||||||
|
|
Loading…
Reference in New Issue