zcy
/
openEMS
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

sf_pml: read grading function from xml & fix: string handling

pull/1/head
Thorsten Liebig 2010-07-30 17:51:39 +02:00
parent f2a3b19d6e
commit c6bafbe885
3 changed files with 34 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
FDTD/operator_ext_pml_sf.cpp
View File

@ -21,17 +21,31 @@
#include "tools/array_ops.h"
#include "fparser.hh"
bool Build_Split_Field_PML(Operator* op, int BC[6], int size[6])
bool Build_Split_Field_PML(Operator* op, int BC[6], int size[6], string gradFunc)
{
for (int n=0;n<6;++n)
{
if (BC[n]==3) //split field PML
{
cerr << "Build_Split_Field_PML:: Warning, currently only pml planes are implemented... edges and corner coming soon..." << endl;
Operator_Ext_PML_SF_Plane* op_pml_sf = new Operator_Ext_PML_SF_Plane(op);
op_pml_sf->SetDirection(n/2,n%2);
if ((size[n]<4) || (size[n]>50))
{
cerr << "Build_Split_Field_PML: Warning, pml size invalid, skipping pml..." << endl;
delete op_pml_sf;
continue;
}
op_pml_sf->SetPMLLength(size[n]);
op_pml_sf->SetBoundaryCondition(BC);
if (!op_pml_sf->SetGradingFunction(gradFunc))
{
cerr << "Build_Split_Field_PML: Warning, pml grading function invalid, skipping pml..." << endl;
delete op_pml_sf;
continue;
}
cerr << "Build_Split_Field_PML:: Warning, currently only pml planes are implemented... edges and corner coming soon..." << endl;
op->AddExtension(op_pml_sf);
}
}
@ -112,7 +126,11 @@ void Operator_Ext_PML_SF::DeleteOP()
bool Operator_Ext_PML_SF::SetGradingFunction(string func)
{
int res = m_GradingFunction->Parse(func.c_str(), "D,dl,W,Z,N");
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_PML_SF::SetGradingFunction: Warning, an error occured parsing the pml grading function (see below) ..." << endl;
@ -401,4 +419,5 @@ void Operator_Ext_PML_SF_Plane::ShowStat(ostream &ostr) const
string top_bot[2] = {"bottom", "top"};
ostr << " Active direction\t: " << XYZ[m_ny] << " (" << top_bot[m_top] << ")" << endl;
ostr << " PML width (cells)\t: " << m_numLines[m_ny] << endl;
ostr << " Grading function\t: \"" << m_GradFunc << "\"" << endl;
}

5
FDTD/operator_ext_pml_sf.h
View File

@ -24,7 +24,7 @@
class FunctionParser;
//! Insert split field pml planes, edges and corner as necessary by the given boundary conditions
bool Build_Split_Field_PML(Operator* op, int BC[6], int size[6]);
bool Build_Split_Field_PML(Operator* op, int BC[6], int size[6], string gradFunc);
//! This is the abstract operator extension for truncating the FDTD domain with a split field pml
class Operator_Ext_PML_SF : public Operator_Extension
@ -57,6 +57,8 @@ public:
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);
@ -78,6 +80,7 @@ protected:
int m_BC[6];
string m_GradFunc;
FunctionParser* m_GradingFunction;
void InitOP();

10
openems.cpp
View File

@ -159,6 +159,10 @@ bool openEMS::SetupBoundaryConditions(TiXmlElement* BC)
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
string s_bc;
const char* tmp = BC->Attribute("PML_Grading");
string pml_gradFunc;
if (tmp)
pml_gradFunc = string(tmp);
string bound_names[] = {"xmin","xmax","ymin","ymax","zmin","zmax"};
@ -169,7 +173,9 @@ bool openEMS::SetupBoundaryConditions(TiXmlElement* BC)
continue;
if (EC==TIXML_WRONG_TYPE)
{
s_bc = string(BC->Attribute(bound_names[n].c_str()));
tmp = BC->Attribute(bound_names[n].c_str());
if (tmp)
s_bc = string(tmp);
if (s_bc=="PEC")
bounds[n] = 0;
else if (s_bc=="PMC")
@ -201,7 +207,7 @@ bool openEMS::SetupBoundaryConditions(TiXmlElement* BC)
FDTD_Op->AddExtension(op_ext_mur);
}
}
Build_Split_Field_PML(FDTD_Op,bounds,pml_size);
Build_Split_Field_PML(FDTD_Op,bounds,pml_size,pml_gradFunc);
return true;
}