51 lines
1.1 KiB
C++
51 lines
1.1 KiB
C++
#include "grid.h"
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#include "tasmet_tracer.h"
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#include "tasmet_exception.h"
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#include "tasmet_constants.h"
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#include <sstream>
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LinearGrid::LinearGrid(us ngp,d L):
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ngp(ngp),
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L(L)
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{
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std::stringstream error;
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if(ngp<constants::min_ngp) {
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error << "Number of gridpoints is lower than minimum. Minimum is: ";
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error << constants::min_ngp;
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throw TaSMETError(error);
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}
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else if(ngp>constants::max_ngp) {
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error << "Maximum number of gridpoints exceeded. Maximum is: ";
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error << constants::max_ngp;
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throw TaSMETError(error);
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}
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if(L<=0){
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throw TaSMETError("Illegal length chosen.");
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}
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}
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BlGrid::BlGrid(d L,d dxb,d dxmid):
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L(L),dxb(dxb),dxmid(dxmid)
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{
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TRACE(15,"BlGrid::BlGrid()");
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if(L<=0 || dxb<=0 || dxmid < dxb){
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throw TaSMETError("Illegal length chosen.");
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}
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}
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vd BlGrid::getx() const {
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TRACE(15,"BlGrid::getx()");
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d delta=2*acosh(sqrt(dxmid/dxb));
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d dxdxi0=0.5*L*(delta/tanh(delta/2))*(1-tanh(delta/2));
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d dxi=dxb/dxdxi0;
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us N=ceil(1/dxi);
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vd xi=linspace(0,1,N);
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return L*0.5*(1+tanh(delta*(xi-0.5))/tanh(delta/2));
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}
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