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Improvement to the initial velocity profile.

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This commit is contained in:
Miikka Vaisala
2019-09-03 12:33:44 +08:00
parent b3ed0937fe
commit 6560ab04bf
2 changed files with 15 additions and 33 deletions
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38
src/standalone/model/host_memory.cc
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@@ -216,41 +216,19 @@ simple_uniform_core(AcMesh* mesh)
const int my = mesh->info.int_params[AC_my];
const int mz = mesh->info.int_params[AC_mz];
//const int nx_min = mesh->info.int_params[AC_nx_min];
//const int nx_max = mesh->info.int_params[AC_nx_max];
//const int ny_min = mesh->info.int_params[AC_ny_min];
//const int ny_max = mesh->info.int_params[AC_ny_max];
//const int nz_min = mesh->info.int_params[AC_nz_min];
//const int nz_max = mesh->info.int_params[AC_nz_max];
const double DX = mesh->info.real_params[AC_dsx];
const double DY = mesh->info.real_params[AC_dsy];
const double DZ = mesh->info.real_params[AC_dsz];
const double ampl_lnrho = mesh->info.real_params[AC_ampl_lnrho];
//const double AMPL_UU = mesh->info.real_params[AC_ampl_uu];
// const double SQ2GM = mesh->info.real_params[AC_sq2GM_star];
// const double GM = mesh->info.real_params[AC_GM_star];
// const double M_star = mesh->info.real_params[AC_M_star];
// const double G_CONST = mesh->info.real_params[AC_G_CONST];
// const double unit_length = mesh->info.real_params[AC_unit_length];
// const double unit_density = mesh->info.real_params[AC_unit_density];
// const double unit_velocity = mesh->info.real_params[AC_unit_velocity];
const double xorig = mesh->info.real_params[AC_xorig];
const double yorig = mesh->info.real_params[AC_yorig];
const double zorig = mesh->info.real_params[AC_zorig];
//const double trans = mesh->info.real_params[AC_trans];
double xx, yy, zz, RR;
double delx, dely, delz;
//double u_x, u_y, u_z;
double tanhRR;
//const double sink_pos_x = mesh->info.real_params[AC_sink_pos_x];
//const double sink_pos_y = mesh->info.real_params[AC_sink_pos_y];
//const double sink_pos_z = mesh->info.real_params[AC_sink_pos_z];
//TEMPORARY TEST INPUT PARAMETERS
const double core_radius = DX*32.0;
const double trans = DX*12.0;
@@ -276,20 +254,24 @@ simple_uniform_core(AcMesh* mesh)
//tanhRR = double(-0.5)*tanh((core_radius-RR)/trans) + double(0.5)
// + double(0.1);
tanhRR = double(1.0);
AcReal RR_inner_bound = mesh->info.real_params[AC_soft]/AcReal(2.0);
if (RR >= mesh->info.real_params[AC_soft]) {
if (RR >= RR_inner_bound) {
abso_vel = vel_scale * sqrt(2.0 * mesh->info.real_params[AC_G_const] * mesh->info.real_params[AC_M_sink_init] / RR);
} else {
abso_vel = vel_scale * sqrt(2.0 * mesh->info.real_params[AC_G_const] * mesh->info.real_params[AC_M_sink_init] / RR_inner_bound);
}
if (RR <= sqrt(DX*DX + DY*DY + DZ*DZ)) {
abso_vel = 0.0;
RR = 1.0;
}
}
mesh->vertex_buffer[VTXBUF_LNRHO][idx] = log(exp(ampl_lnrho)*tanhRR);
mesh->vertex_buffer[VTXBUF_UUX][idx] = -abso_vel * (yy / RR);
mesh->vertex_buffer[VTXBUF_UUY][idx] = abso_vel * (xx / RR);
mesh->vertex_buffer[VTXBUF_UUZ][idx] = double(0.0);
mesh->vertex_buffer[VTXBUF_UUX][idx] = -abso_vel * (yy / RR);
mesh->vertex_buffer[VTXBUF_UUY][idx] = abso_vel * (xx / RR);
mesh->vertex_buffer[VTXBUF_UUZ][idx] = double(0.0);
}
}