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change 4-point stencil to 3-point stencil for Neumann #1

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change 4-point stencil to 3-point stencil for Neumann #1

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12 changes: 6 additions & 6 deletions Source/FieldSolver/FiniteDifferenceSolver/FiniteDifferenceAlgorithms/CartesianYeeAlgorithm.H
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Original file line number Diff line number Diff line change
Expand Up @@ -240,11 +240,11 @@ struct CartesianYeeAlgorithm {
if(ncomp != nodality){
if ( Ms_hi_x == 0.) //non-magnetic on right
{
return inv_dx*inv_dx*(2.*F(i,j,k,ncomp) - 5.*F(i-1,j,k,ncomp) + 4.*F(i-2,j,k,ncomp) - F(i-3,j,k,ncomp));
return inv_dx*inv_dx*(F(i,j,k,ncomp) - 2.* F(i-1,j,k,ncomp) + F(i-2,j,k,ncomp));
}
else if (Ms_lo_x == 0.) //non-magnetic on left
{
return inv_dx*inv_dx*(2.*F(i,j,k,ncomp) - 5.*F(i+1,j,k,ncomp) + 4.*F(i+2,j,k,ncomp) - F(i+3,j,k,ncomp));
return inv_dx*inv_dx*(F(i,j,k,ncomp) - 2.* F(i+1,j,k,ncomp) + F(i+2,j,k,ncomp));
} else
{
return inv_dx*(UpwardDx(F, coefs_x, n_coefs_x, i, j, k, ncomp) - DownwardDx(F, coefs_x, n_coefs_x, i, j, k, ncomp));
Expand Down Expand Up @@ -276,11 +276,11 @@ struct CartesianYeeAlgorithm {
if(ncomp != nodality){
if ( Ms_hi_y == 0.) //non-magnetic on right
{
return inv_dy*inv_dy*(2.*F(i,j,k,ncomp) - 5.*F(i,j-1,k,ncomp) + 4.*F(i,j-2,k,ncomp) - F(i,j-3,k,ncomp));
return inv_dy*inv_dy*(F(i,j,k,ncomp) - 2.*F(i,j-1,k,ncomp) + F(i,j-2,k,ncomp));
}
else if (Ms_lo_y == 0.) //non-magnetic on left
{
return inv_dy*inv_dy*(2.*F(i,j,k,ncomp) - 5.*F(i,j+1,k,ncomp) + 4.*F(i,j+2,k,ncomp) - F(i,j+3,k,ncomp));
return inv_dy*inv_dy*(F(i,j,k,ncomp) - 2.*F(i,j+1,k,ncomp) + F(i,j+2,k,ncomp));
} else
{
return inv_dy*(UpwardDy(F, coefs_y, n_coefs_y, i, j, k, ncomp) - DownwardDy(F, coefs_y, n_coefs_y, i, j, k, ncomp));
Expand Down Expand Up @@ -312,11 +312,11 @@ struct CartesianYeeAlgorithm {
if(ncomp != nodality){
if ( Ms_hi_z == 0.) //non-magnetic on right
{
return inv_dz*inv_dz*(2.*F(i,j,k,ncomp) - 5.*F(i,j,k-1,ncomp) + 4.*F(i,j,k-2,ncomp) - F(i,j,k-3,ncomp));
return inv_dz*inv_dz*(F(i,j,k,ncomp) - 2.*F(i,j,k-1,ncomp) + F(i,j,k-2,ncomp));
}
else if (Ms_lo_z == 0.) //non-magnetic on left
{
return inv_dz*inv_dz*(2.*F(i,j,k,ncomp) - 5.*F(i,j,k+1,ncomp) + 4.*F(i,j,k+2,ncomp) - F(i,j,k+3,ncomp));
return inv_dz*inv_dz*(F(i,j,k,ncomp) - 2.*F(i,j,k+1,ncomp) + F(i,j,k+2,ncomp));
} else
{
return inv_dz*(UpwardDz(F, coefs_z, n_coefs_z, i, j, k, ncomp) - DownwardDz(F, coefs_z, n_coefs_z, i, j, k, ncomp));
Expand Down