105 lines
4.1 KiB
C++
105 lines
4.1 KiB
C++
/*
|
|
* 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 "FDTD/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();
|
|
|
|
//! Returns always true, Create_UPML method will take care of creating a valid pml for the cylindrical fdtd
|
|
virtual bool IsCylinderCoordsSave(bool closedAlpha, bool R0_included) const { UNUSED(closedAlpha); UNUSED(R0_included); return true;}
|
|
|
|
//! Returns always true if base grid, Create_UPML will create proper child pml extensions.
|
|
virtual bool IsCylindricalMultiGridSave(bool child) const {if (child) return false; return true;}
|
|
|
|
void SetBoundaryCondition(const int* BCs, const unsigned int size[6]);
|
|
|
|
void SetRange(const unsigned int start[3], const unsigned int stop[3]);
|
|
|
|
//! 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*Z*(pow(2.5,W/dl)-1)) * pow(2.5, D/dl) ");
|
|
|
|
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");}
|
|
|
|
virtual void ShowStat(ostream &ostr) const;
|
|
|
|
//! Create the UPML
|
|
static bool Create_UPML(Operator* op, const int ui_BC[6], const unsigned int ui_size[6], const 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, double kappa_v[3], double kappa_i[3]);
|
|
|
|
void DeleteOp();
|
|
|
|
virtual FDTD_FLOAT& GetVV(int ny, unsigned int pos[3]) {return vv[ny][pos[0]][pos[1]][pos[2]];}
|
|
virtual FDTD_FLOAT& GetVVFO(int ny, unsigned int pos[3]) {return vvfo[ny][pos[0]][pos[1]][pos[2]];}
|
|
virtual FDTD_FLOAT& GetVVFN(int ny, unsigned int pos[3]) {return vvfn[ny][pos[0]][pos[1]][pos[2]];}
|
|
virtual FDTD_FLOAT& GetII(int ny, unsigned int pos[3]) {return ii[ny][pos[0]][pos[1]][pos[2]];}
|
|
virtual FDTD_FLOAT& GetIIFO(int ny, unsigned int pos[3]) {return iifo[ny][pos[0]][pos[1]][pos[2]];}
|
|
virtual FDTD_FLOAT& GetIIFN(int ny, unsigned int pos[3]) {return iifn[ny][pos[0]][pos[1]][pos[2]];}
|
|
|
|
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
|