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Finished accretion_profile function and started a draft of update_accretion_buffer.

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This commit is contained in:
JackHsu
2019-08-07 17:14:26 +08:00
parent 240040011a
commit 2f14bb2a30
1 changed files with 15 additions and 5 deletions
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20
acc/mhd_solver/stencil_process.sps
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@@ -85,7 +85,7 @@ truelove_density(in Scalar lnrho){
const Scalar rho = exp(lnrho);
const Scalar Jeans_length_squared = (M_PI * cs2_sound) / (AC_G_const * rho);
const Scalar TJ_rho = ((M_PI) * ((dsx * dsx) / Jeans_length_squared) * cs2_sound) / (AC_G_const * dsx * dsx);
//TODO: dsx will cancel out, deal with it later for optimization.
Scalar accrection_rho = rho - TJ_rho;
if (accrection_rho < 0){
@@ -96,8 +96,8 @@ truelove_density(in Scalar lnrho){
}
accretion_profile(int3 globalVertexIdx){
// ONE QUESTION: do I need to define grid_pos, sink_pos and distance again
accretion_profile(int3 globalVertexIdx, in Scalar lnrho){
// QUESTION: do I need to define grid_pos, sink_pos and distance again
// if the sink_gravity kernel will also be called once LSINK swtich is on? Seems redundant.
const Vector grid_pos = (Vector){(globalVertexIdx.x - nx_min) * dsx,
(globalVertexIdx.y - ny_min) * dsy,
@@ -105,17 +105,22 @@ accretion_profile(int3 globalVertexIdx){
const Vector sink_pos = (Vector){DCONST_REAL(AC_sink_pos_x),
DCONST_REAL(AC_sink_pos_y),
DCONST_REAL(AC_sink_pos_z)};
const Scalar profile_range = DCONST_REAL(AC_accretion_range) * dsx;
const Scalar profile_range = DCONST_REAL(AC_accretion_range);
const Scalar accretion_distance = length(grid_pos - sink_pos);
if ((accretion_distance) <= profile_range){
// calculate accretion according to chosen criterion for the grid cell.
accretion = accretion_rho * dsx * dsy * dsz;
accretion = truelove_density(lnrho);
} else {
accretion = Scalar(0.0);
}
return accretion;// the returned value is effectively mass, doesn't seem right since MIIKKA said mass will be summed up in vertex buffer. But I'll keep it as it untill we discuss this.
}
update_accretion_buffer(){
// 1. reduce accretion density from the density field.
// 2. Add the accretion mass, which is calculated from accretion density times volume of each cell and sum them into accretion buffer.
@@ -391,6 +396,11 @@ in Scalar tt = VTXBUF_TEMPERATURE;
out Scalar out_tt = VTXBUF_TEMPERATURE;
#endif
#if LSINK
in Scalar accretion = VTXBUF_ACCRETION;
out Scalar out_accretion = VTXBUF_ACCRETION;
#endif
Kernel void
solve(Scalar dt) {
out_lnrho = rk3(out_lnrho, lnrho, continuity(uu, lnrho), dt);