// Using Z=rho*h*W^2, and W, get the primitive variables.
// -----------------------------------------------------------------------------
int rmhd_c2p_reconstruct_prim(double Z, double W, double *Pout)
{
double P[8]; // Place result into temporary prim state for now.
const double b0 = BS * W / Z;
P[rho] = D/W;
P[pre] = (D/W) * (Z/(D*W) - 1.0) * gamf;
P[vx ] = (Cons[Sx] + b0*Cons[Bx]/W) / (Z+B2);
P[vy ] = (Cons[Sy] + b0*Cons[By]/W) / (Z+B2);
P[vz ] = (Cons[Sz] + b0*Cons[Bz]/W) / (Z+B2);
P[Bx ] = Cons[Bx];
P[By ] = Cons[By];
P[Bz ] = Cons[Bz];
int prim_error = rmhd_c2p_check_prim(P);
if (prim_error) return prim_error;
// Don't actually modify the user's prim state until we're sure the state is
// good.
// ---------------------------------------------------------------------------
memcpy(Pout, P, 8*sizeof(double));
return RMHD_C2P_SUCCESS;
}
void MagneticBubbleBoundary::set_bc_z0_wall(std::valarray<double> &U) const
{
const int Nx = Mara->domain->get_N(1);
const int Ny = Mara->domain->get_N(2);
const int Ng = Mara->domain->get_Ng();
const double r0 = rotation_radius;
ValarrayManager M(Mara->domain->aug_shape(), Mara->domain->get_Nq());
for (int i=0; i<Nx+2*Ng; ++i) {
for (int j=0; j<Ny+2*Ng; ++j) {
for (int k=0; k<Ng; ++k) {
double x = Mara->domain->x_at(i);
double y = Mara->domain->y_at(j);
double r = sqrt(x*x + y*y);
double Omega;
switch (rotation_profile) {
case RIGID_ROTATION:
if (r < r0) {
Omega = 1.0;
}
else {
Omega = 0.0;
}
break;
case RIGID_IN_KEPLARIAN_OUT:
if (r < 0.5*r0) {
Omega = 1.0;
}
else if (r > 2*r0) {
Omega = 0.0;
}
else {
Omega = pow(2*r/r0, -1.5);
}
break;
}
std::valarray<double> U1 = U[ M(i,j,2*Ng-k-1) ]; // reflected zone
std::valarray<double> P1(8); // reflected zone primitive variables
std::valarray<double> U0(8);
std::valarray<double> P0(8);
if (receive_primitive) {
P1 = U1; // U was actually P (confusing, I know)
}
else {
int err = Mara->fluid->ConsToPrim(&U1[0], &P1[0]);
if (err) {
/*
fprintf(stderr,
"[MagneticBubbleBoundary] unphysical boundary value\n");
std::cerr << Mara->fluid->PrintCons(&U1[0]) << std::endl;
std::cerr << rmhd_c2p_get_error(err) << std::endl;
*/
// exit(1);
continue;
}
}
/* not reflecting vz ensures that v < 1 in the guard zones */
P0[0] = P1[0];
P0[1] = P1[1];
P0[2] = -y/r0 * Omega;
P0[3] = x/r0 * Omega;
P0[4] = 0.0;//-P1[4];
P0[5] = -P1[5];
P0[6] = -P1[6];
P0[7] = P1[7];
if (receive_primitive) {
U0 = P0; // U really is P
int err = rmhd_c2p_check_prim(&P0[0]);
if (err) {
std::cerr << rmhd_c2p_get_error(err) << std::endl;
exit(1);
}
}
else {
int err = Mara->fluid->PrimToCons(&P0[0], &U0[0]);
if (err) {
std::cerr << rmhd_c2p_get_error(err) << std::endl;
exit(1);
}
}
U[ M(i,j,k) ] = U0;
}
}
}
}
int Rmhd::PrimCheck(const double *P) const
{
return rmhd_c2p_check_prim(P);
}
