89 lines
3.2 KiB
C
89 lines
3.2 KiB
C
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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 OPERATOR_EXT_UPML_H
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#define OPERATOR_EXT_UPML_H
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#include "operator.h"
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#include "operator_extension.h"
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class FunctionParser;
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//! Operator extension implemention an uniaxial perfectly matched layer (upml)
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/*
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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.
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Therefore the voltages and currents as well as the operator are replaced during these update process.
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This extension is propably incompatible with the most other extensions operating in the same regions.
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*/
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class Operator_Ext_UPML : public Operator_Extension
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{
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friend class Engine_Ext_UPML;
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public:
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virtual ~Operator_Ext_UPML();
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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];}}
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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;}}
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//! Set the grading function for the pml
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/*!
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Define the pml grading grading function.
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Predefined variables in this grading function are:
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D = depth in the pml in meter
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dl = mesh delta inside the pml in meter
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W = width (length) of the pml in meter
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N = number of cells for the pml
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Z = wave impedance at the current depth and position
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example: SetGradingFunction("-log(1e-6)*log(2.5)/(2*dl*pow(2.5,W/dl)-1) * pow(2.5, D/dl) / Z");
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An empty function string will be ignored.
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*/
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virtual bool SetGradingFunction(string func);
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virtual bool BuildExtension();
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virtual Engine_Extension* CreateEngineExtention();
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virtual string GetExtensionName() const {return string("Uniaxial PML Extension");}
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//! Create the UPML
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static bool Create_UPML(Operator* op, int BC[6], unsigned int size[6], string gradFunc);
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protected:
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Operator_Ext_UPML(Operator* op);
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int m_BC[6];
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unsigned int m_Size[6];
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unsigned int m_StartPos[3];
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unsigned int m_numLines[3];
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string m_GradFunc;
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FunctionParser* m_GradingFunction;
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void CalcGradingKappa(int ny, unsigned int pos[3], double Zm[3], double kappa_v[3], double kappa_i[3]);
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void DeleteOp();
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FDTD_FLOAT**** vv; //calc new voltage from old voltage
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FDTD_FLOAT**** vvfo; //calc new voltage from old voltage flux
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FDTD_FLOAT**** vvfn; //calc new voltage from new voltage flux
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FDTD_FLOAT**** ii; //calc new current from old current
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FDTD_FLOAT**** iifo; //calc new current from old current flux
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FDTD_FLOAT**** iifn; //calc new current from new current flux
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};
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#endif // OPERATOR_EXT_UPML_H
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