new in CylinderCoords: closed alpha field domain
todo: - include r=0 - make sure a varying mesh in alpha-direction is OKpull/1/head
Thorsten Liebig
parent
3b29514d16
commit
4db42917bb
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@ -26,18 +26,191 @@ Engine_Cylinder* Engine_Cylinder::New(const Operator_Cylinder* op)
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Engine_Cylinder::Engine_Cylinder(const Operator_Cylinder* op) : Engine(op)
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{
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cyl_Op = op;
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if (cyl_Op->GetClosedAlpha())
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{
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++numLines[1]; //necessary for dobled voltage and current line in alpha-dir, operator will return one smaller for correct post-processing
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}
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}
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Engine_Cylinder::~Engine_Cylinder()
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{
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Reset();
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}
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void Engine_Cylinder::Init()
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{
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Engine::Init();
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// if (cyl_Op->GetClosedAlpha())
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// {
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// unsigned int lastLine = Op->numLines[1]-1; //number of last alpha-line
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// unsigned int pos[3];
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// for (pos[0]=0;pos[0]<Op->numLines[0];++pos[0])
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// {
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// for (int n=0;n<3;++n)
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// {
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// delete[] volt[n][pos[0]][lastLine];
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// volt[n][pos[0]][lastLine] = volt[n][pos[0]][0];
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// delete[] curr[n][pos[0]][lastLine];
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// curr[n][pos[0]][lastLine] = curr[n][pos[0]][0];
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// }
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// }
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// }
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}
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void Engine_Cylinder::Reset()
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{
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Engine::Reset();
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// if (cyl_Op->GetClosedAlpha())
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// {
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// unsigned int lastLine = Op->numLines[1]-1; //number of last alpha-line
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// unsigned int pos[3];
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// for (pos[0]=0;pos[0]<Op->numLines[0];++pos[0])
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// {
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// for (int n=0;n<3;++n)
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// {
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// volt[n][pos[0]][lastLine] = NULL;
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// curr[n][pos[0]][lastLine] = NULL;
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// }
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// }
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// }
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}
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inline void Engine_Cylinder::CloseAlphaVoltages()
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{
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unsigned int pos[3];
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// copy voltages from last alpha-plane to first
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unsigned int last_A_Line = numLines[1]-1;
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for (pos[0]=0;pos[0]<numLines[0];++pos[0])
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{
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for (pos[2]=0;pos[2]<numLines[2];++pos[2])
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{
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volt[0][pos[0]][0][pos[2]] = volt[0][pos[0]][last_A_Line][pos[2]];
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volt[1][pos[0]][0][pos[2]] = volt[1][pos[0]][last_A_Line][pos[2]];
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volt[2][pos[0]][0][pos[2]] = volt[2][pos[0]][last_A_Line][pos[2]];
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}
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}
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}
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inline void Engine_Cylinder::CloseAlphaCurrents()
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{
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unsigned int pos[3];
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// copy currents from first alpha-plane to last
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for (pos[0]=0;pos[0]<numLines[0]-1;++pos[0])
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{
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unsigned int last_A_Line = numLines[1]-1;
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for (pos[2]=0;pos[2]<numLines[2]-1;++pos[2])
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{
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curr[0][pos[0]][last_A_Line][pos[2]] = curr[0][pos[0]][0][pos[2]];
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curr[1][pos[0]][last_A_Line][pos[2]] = curr[1][pos[0]][0][pos[2]];
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curr[2][pos[0]][last_A_Line][pos[2]] = curr[2][pos[0]][0][pos[2]];
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}
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}
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}
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bool Engine_Cylinder::IterateTS(unsigned int iterTS)
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{
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if (cyl_Op->GetClosedAlpha()==false)
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return Engine::IterateTS(iterTS);
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for (unsigned int iter=0;iter<iterTS;++iter)
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{
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UpdateVoltages();
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ApplyVoltageExcite();
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CloseAlphaVoltages();
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UpdateCurrents();
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ApplyCurrentExcite();
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CloseAlphaCurrents();
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++numTS;
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}
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return true;
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}
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//inline void Engine_Cylinder::UpdateVoltages()
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//{
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// unsigned int pos[3];
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// bool shift[3];
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//
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// if (cyl_Op->GetClosedAlpha()==false)
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// return Engine::UpdateVoltages();
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//
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// //voltage updates
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// for (pos[0]=0;pos[0]<Op->numLines[0];++pos[0])
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// {
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// shift[0]=pos[0];
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// for (pos[1]=1;pos[1]<Op->numLines[1];++pos[1])
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// {
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// shift[1]=pos[1];
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// for (pos[2]=0;pos[2]<Op->numLines[2];++pos[2])
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// {
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// shift[2]=pos[2];
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// //do the updates here
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// //for x
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// volt[0][pos[0]][pos[1]][pos[2]] *= Op->vv[0][pos[0]][pos[1]][pos[2]];
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// volt[0][pos[0]][pos[1]][pos[2]] += Op->vi[0][pos[0]][pos[1]][pos[2]] * ( curr[2][pos[0]][pos[1]][pos[2]] - curr[2][pos[0]][pos[1]-shift[1]][pos[2]] - curr[1][pos[0]][pos[1]][pos[2]] + curr[1][pos[0]][pos[1]][pos[2]-shift[2]]);
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//
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// //for y
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// volt[1][pos[0]][pos[1]][pos[2]] *= Op->vv[1][pos[0]][pos[1]][pos[2]];
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// volt[1][pos[0]][pos[1]][pos[2]] += Op->vi[1][pos[0]][pos[1]][pos[2]] * ( curr[0][pos[0]][pos[1]][pos[2]] - curr[0][pos[0]][pos[1]][pos[2]-shift[2]] - curr[2][pos[0]][pos[1]][pos[2]] + curr[2][pos[0]-shift[0]][pos[1]][pos[2]]);
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//
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// //for z
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// volt[2][pos[0]][pos[1]][pos[2]] *= Op->vv[2][pos[0]][pos[1]][pos[2]];
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// volt[2][pos[0]][pos[1]][pos[2]] += Op->vi[2][pos[0]][pos[1]][pos[2]] * ( curr[1][pos[0]][pos[1]][pos[2]] - curr[1][pos[0]-shift[0]][pos[1]][pos[2]] - curr[0][pos[0]][pos[1]][pos[2]] + curr[0][pos[0]][pos[1]-shift[1]][pos[2]]);
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// }
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// }
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//
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// // copy voltages from last alpha-plane to first
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// unsigned int last_A_Line = Op->numLines[1]-1;
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// for (pos[2]=0;pos[2]<Op->numLines[2];++pos[2])
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// {
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// volt[0][pos[0]][0][pos[2]] = volt[0][pos[0]][last_A_Line][pos[2]];
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// volt[1][pos[0]][0][pos[2]] = volt[1][pos[0]][last_A_Line][pos[2]];
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// volt[2][pos[0]][0][pos[2]] = volt[2][pos[0]][last_A_Line][pos[2]];
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// }
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//
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// }
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//}
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//
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//inline void Engine_Cylinder::UpdateCurrents()
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//{
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// if (cyl_Op->GetClosedAlpha()==false)
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// return Engine::UpdateCurrents();
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//
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// unsigned int pos[3];
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// for (pos[0]=0;pos[0]<Op->numLines[0]-1;++pos[0])
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// {
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// for (pos[1]=0;pos[1]<Op->numLines[1]-1;++pos[1])
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// {
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// for (pos[2]=0;pos[2]<Op->numLines[2]-1;++pos[2])
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// {
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// //do the updates here
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// //for x
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// curr[0][pos[0]][pos[1]][pos[2]] *= Op->ii[0][pos[0]][pos[1]][pos[2]];
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// curr[0][pos[0]][pos[1]][pos[2]] += Op->iv[0][pos[0]][pos[1]][pos[2]] * ( volt[2][pos[0]][pos[1]][pos[2]] - volt[2][pos[0]][pos[1]+1][pos[2]] - volt[1][pos[0]][pos[1]][pos[2]] + volt[1][pos[0]][pos[1]][pos[2]+1]);
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//
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// //for y
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// curr[1][pos[0]][pos[1]][pos[2]] *= Op->ii[1][pos[0]][pos[1]][pos[2]];
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// curr[1][pos[0]][pos[1]][pos[2]] += Op->iv[1][pos[0]][pos[1]][pos[2]] * ( volt[0][pos[0]][pos[1]][pos[2]] - volt[0][pos[0]][pos[1]][pos[2]+1] - volt[2][pos[0]][pos[1]][pos[2]] + volt[2][pos[0]+1][pos[1]][pos[2]]);
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//
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// //for z
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// curr[2][pos[0]][pos[1]][pos[2]] *= Op->ii[2][pos[0]][pos[1]][pos[2]];
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// curr[2][pos[0]][pos[1]][pos[2]] += Op->iv[2][pos[0]][pos[1]][pos[2]] * ( volt[1][pos[0]][pos[1]][pos[2]] - volt[1][pos[0]+1][pos[1]][pos[2]] - volt[0][pos[0]][pos[1]][pos[2]] + volt[0][pos[0]][pos[1]+1][pos[2]]);
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// }
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// }
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// // copy currents from first alpha-plane to last
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// unsigned int last_A_Line = Op->numLines[1]-1;
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// for (pos[2]=0;pos[2]<Op->numLines[2]-1;++pos[2])
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// {
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// curr[0][pos[0]][last_A_Line][pos[2]] = curr[0][pos[0]][0][pos[2]];
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// curr[1][pos[0]][last_A_Line][pos[2]] = curr[1][pos[0]][0][pos[2]];
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// curr[2][pos[0]][last_A_Line][pos[2]] = curr[2][pos[0]][0][pos[2]];
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// }
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// }
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//}
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@ -25,13 +25,21 @@ class Engine_Cylinder : public Engine
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{
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public:
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static Engine_Cylinder* New(const Operator_Cylinder* op);
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virtual ~Engine_Cylinder();
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virtual void Init();
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virtual void Reset();
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//!Iterate a number of timesteps
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virtual bool IterateTS(unsigned int iterTS);
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protected:
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Engine_Cylinder(const Operator_Cylinder* op);
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~Engine_Cylinder();
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virtual inline void CloseAlphaVoltages();
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virtual inline void CloseAlphaCurrents();
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const Operator_Cylinder* cyl_Op;
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};
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#endif // ENGINE_CYLINDER_H
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@ -45,6 +45,16 @@ void Operator_Cylinder::Reset()
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Operator::Reset();
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}
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inline unsigned int Operator_Cylinder::GetNumberOfLines(int ny) const
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{
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//this is necessary for a correct field processing... cylindrical engine has to reset this by adding +1
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if (CC_closedAlpha && ny==1)
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return numLines[1]-1;
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return numLines[ny];
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}
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bool Operator_Cylinder::SetGeometryCSX(ContinuousStructure* geo)
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{
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if (Operator::SetGeometryCSX(geo)==false) return false;
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@ -53,10 +63,20 @@ bool Operator_Cylinder::SetGeometryCSX(ContinuousStructure* geo)
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// cerr << minmaxA -2*PI << " < " << (2*PI)/10/numLines[1] << endl;
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if (fabs(minmaxA-2*PI) < (2*PI)/10/numLines[1]) //check minmaxA smaller then a tenth of average alpha-width
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{
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CC_closedAlpha = true;
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--numLines[1];
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cout << "Operator_Cylinder::SetGeometryCSX: Alpha is a full 2*PI => closed Cylinder..." << endl;
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cerr << "Operator_Cylinder::SetGeometryCSX: closed cylinder not yet implemented... exit... " << endl; exit(1);
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CC_closedAlpha = true;
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discLines[1][numLines[1]-1] = discLines[1][0] + 2*PI;
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cerr << "Operator_Cylinder::SetGeometryCSX: Warning, not handling the disc-line width and material averaging correctly yet for a closed cylinder..." << endl;
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if (MainOp->GetIndexDelta(1,0)-MainOp->GetIndexDelta(1,numLines[1]-2) > (2*PI)/10/numLines[1])
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{
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cerr << "Operator_Cylinder::SetGeometryCSX: first and last angle delta must be the same... deviation to large..." << MainOp->GetIndexDelta(1,0) - MainOp->GetIndexDelta(1,numLines[1]-2) << endl;
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exit(1);
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}
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if (MainOp->GetIndexDelta(1,0)-MainOp->GetIndexDelta(1,numLines[1]-2) > 0)
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{
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cerr << "Operator_Cylinder::SetGeometryCSX: first and last angle delta must be the same... auto correction of deviation: " << MainOp->GetIndexDelta(1,0) - MainOp->GetIndexDelta(1,numLines[1]-2) << endl;
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discLines[1][numLines[1]-2] = discLines[1][numLines[1]-1]-MainOp->GetIndexDelta(1,0);
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}
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}
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else if (minmaxA>2*PI)
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{cerr << "Operator_Cylinder::SetGeometryCSX: Alpha Max-Min must not be larger than 2*PI!!!" << endl; Reset(); return false;}
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@ -33,6 +33,11 @@ public:
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virtual void Reset();
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virtual unsigned int GetNumberOfLines(int ny) const;
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bool GetClosedAlpha() const {return CC_closedAlpha;}
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bool GetR0Included() const {return CC_R0_included;}
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protected:
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Operator_Cylinder();
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virtual void Init();
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@ -0,0 +1,129 @@
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close all;
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clear all;
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clc
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EPS0 = 8.85418781762e-12;
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MUE0 = 1.256637062e-6;
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C0 = 1/sqrt(EPS0*MUE0);
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Z0 = sqrt(MUE0/EPS0);
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f0 = 0.5e9;
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epsR = 1;
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abs_length = 500;
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length = 3000;
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port_dist = 1500;
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rad_i = 100;
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rad_a = 230;
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max_mesh = 10;
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max_alpha = max_mesh;
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N_alpha = ceil(rad_a * 2*pi / max_alpha);
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mesh_res = [max_mesh 2*pi/N_alpha max_mesh];
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openEMS_Path = [pwd() '/../../'];
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openEMS_opts = '';
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openEMS_opts = [openEMS_opts ' --disable-dumps'];
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% openEMS_opts = [openEMS_opts ' --debug-material'];
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Sim_Path = 'tmp';
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Sim_CSX = 'coax.xml';
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mkdir(Sim_Path);
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%setup FDTD parameter
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FDTD = InitCylindricalFDTD(1e5,1e-5,'OverSampling',10);
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FDTD = SetGaussExcite(FDTD,f0,f0);
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BC = [0 0 1 1 0 0];
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FDTD = SetBoundaryCond(FDTD,BC);
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%setup CSXCAD geometry
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CSX = InitCSX();
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mesh.x = rad_i : mesh_res(1) : rad_a;
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mesh.y = linspace(0,2*pi,N_alpha);
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% mesh.y = mesh.y + mesh_res(2)/2;
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mesh.z = 0 : mesh_res(3) : length;
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CSX = DefineRectGrid(CSX, 1e-3,mesh);
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%%%fake pml
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finalKappa = 0.3/abs_length^4;
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finalSigma = finalKappa*MUE0/EPS0/epsR;
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CSX = AddMaterial(CSX,'pml');
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CSX = SetMaterialProperty(CSX,'pml','Kappa',finalKappa,'Epsilon',epsR);
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CSX = SetMaterialProperty(CSX,'pml','Sigma',finalSigma);
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CSX = SetMaterialWeight(CSX,'pml','Kappa',['pow(abs(z)-' num2str(length-abs_length) ',4)']);
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CSX = SetMaterialWeight(CSX,'pml','Sigma',['pow(abs(z)-' num2str(length-abs_length) ',4)']);
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start = [rad_i mesh.y(1) length-abs_length];
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stop = [rad_a mesh.y(end) length];
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CSX = AddBox(CSX,'pml',0 ,start,stop);
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CSX = AddMaterial(CSX,'fill');
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CSX = SetMaterialProperty(CSX,'fill','Epsilon',epsR);
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start = [mesh.x(1) mesh.y(1) 0];
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stop = [mesh.x(end) mesh.y(end) length];
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CSX = AddBox(CSX,'fill',0 ,start,stop);
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start = [rad_i mesh.y(1) 0];
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stop = [rad_a mesh.y(end) 0];
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CSX = AddExcitation(CSX,'excite',0,[1 0 0]);
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weight{1} = '1/rho';
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weight{2} = 0;
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weight{3} = 0;
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CSX = SetExcitationWeight(CSX, 'excite', weight );
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CSX = AddBox(CSX,'excite',0 ,start,stop);
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%dump
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CSX = AddDump(CSX,'Et_','DumpMode',0);
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start = [mesh.x(1) , 0 , mesh.z(1)];
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stop = [mesh.x(end) , 0 , mesh.z(end)];
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CSX = AddBox(CSX,'Et_',0 , start,stop);
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CSX = AddDump(CSX,'Ht_','DumpType',1,'DumpMode',0);
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CSX = AddBox(CSX,'Ht_',0,start,stop);
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% voltage calc (take a voltage average to be at the same spot as the
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% current calculation)
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CSX = AddProbe(CSX,'ut1_1',0);
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start = [ rad_i 0 port_dist ];stop = [ rad_a 0 port_dist ];
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CSX = AddBox(CSX,'ut1_1', 0 ,start,stop);
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CSX = AddProbe(CSX,'ut1_2',0);
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start = [ rad_i 0 port_dist+mesh_res(3) ];stop = [ rad_a 0 port_dist+mesh_res(3) ];
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CSX = AddBox(CSX,'ut1_2', 0 ,start,stop);
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% current calc
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CSX = AddProbe(CSX,'it1',1);
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mid = 0.5*(rad_i+rad_a);
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start = [ 0 mesh.y(1) port_dist ];stop = [ mid mesh.y(end) port_dist ];
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CSX = AddBox(CSX,'it1', 0 ,start,stop);
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%Write openEMS compatoble xml-file
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WriteOpenEMS([Sim_Path '/' Sim_CSX],FDTD,CSX);
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%cd to working dir and run openEMS
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savePath = pwd();
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cd(Sim_Path); %cd to working dir
|
||||
command = [openEMS_Path 'openEMS.sh ' Sim_CSX ' ' openEMS_opts];
|
||||
disp(command);
|
||||
system(command)
|
||||
cd(savePath);
|
||||
|
||||
UI = ReadUI({'ut1_1','ut1_2','it1'},'tmp/');
|
||||
u_f = (UI.FD{1}.val + UI.FD{2}.val)/2; %averaging voltages to fit current
|
||||
i_f = UI.FD{3}.val;
|
||||
|
||||
delta_t = UI.TD{3}.t(1) - UI.TD{1}.t(1); % half time-step (s)
|
||||
i_f2 = i_f .* exp(-1i*2*pi*UI.FD{1}.f*delta_t); % compensate half time-step advance of H-field
|
||||
|
||||
ZL = Z0/2/pi/sqrt(epsR)*log(rad_a/rad_i); %analytic line-impedance of a coax
|
||||
plot(UI.FD{1}.f,ZL*ones(size(u_f)),'g');
|
||||
hold on;
|
||||
grid on;
|
||||
Z = u_f./i_f2;
|
||||
plot(UI.FD{1}.f,real(Z),'Linewidth',2);
|
||||
plot(UI.FD{1}.f,imag(Z),'r','Linewidth',2);
|
||||
xlim([0 2*f0]);
|
||||
legend('Z_L','\Re\{Z\}','\Im\{Z\}','Location','Best');
|
||||
|
||||
|
||||
Loading…
Reference in New Issue