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Added the equations for hydro only for both CPU and GPU. NOTE: NOT RIGOROUSLY CHECKED FOR CORRECTNESS. I just took the equations used with entropy and removed the terms which included entropy and magnetic fields

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jpekkila
2019-07-01 18:56:13 +03:00
parent 75f74526f4
commit 1e6740f999
2 changed files with 25 additions and 46 deletions
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28
acc/mhd_solver/stencil_process.sps
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@@ -100,22 +100,20 @@ momentum(in Vector uu, in Scalar lnrho, in Scalar tt) {
#else
Vector
momentum(in Vector uu, in Scalar lnrho) {
Vector mom;
// !!!!!!!!!!!!!!!!%JP: NOTE TODO IMPORTANT!!!!!!!!!!!!!!!!!!!!!!!!
// NOT CHECKED FOR CORRECTNESS: USE AT YOUR OWN RISK
const Matrix S = stress_tensor(uu);
// Isothermal: we have constant speed of sound
mom = -mul(gradients(uu), value(uu)) -
cs2_sound * gradient(lnrho) +
nu_visc *
(laplace_vec(uu) + Scalar(1. / 3.) * gradient_of_divergence(uu) +
Scalar(2.) * mul(S, gradient(lnrho))) + zeta * gradient_of_divergence(uu);
#if LGRAVITY
mom = mom - (Vector){0, 0, -10.0};
#endif
const Scalar cs2 = cs2_sound * exp((gamma - 1) * (value(lnrho) - LNRHO0));
// Regex replace CPU constants with get\(AC_([a-zA-Z_0-9]*)\)
// \1
const Vector mom = - mul(gradients(uu), value(uu))
- cs2 * gradient(lnrho)
+ nu_visc * (
laplace_vec(uu)
+ Scalar(1. / 3.) * gradient_of_divergence(uu)
+ Scalar(2.) * mul(S, gradient(lnrho))
)
+ zeta * gradient_of_divergence(uu);
return mom;
}
#endif

37
src/standalone/model/model_rk3.cc
View File

@@ -587,38 +587,19 @@ momentum(const ModelVectorData& uu, const ModelScalarData& lnrho
ModelScalar(2.) * mul(S, gradient(lnrho))) +
get(AC_zeta) * gradient_of_divergence(uu);
return mom;
#endif
#if 0
#else
// !!!!!!!!!!!!!!!!%JP: NOTE TODO IMPORTANT!!!!!!!!!!!!!!!!!!!!!!!!
// NOT CHECKED FOR CORRECTNESS: USE AT YOUR OWN RISK
const ModelMatrix S = stress_tensor(uu);
const ModelScalar cs2 = get(AC_cs2_sound) * expl((get(AC_gamma) - 1) * (value(lnrho) - LNRHO0));
//#if LENTROPY
//const ModelScalar lnrho0 = 1; // TODO correct lnrho0
const ModelScalar cs02 = get(AC_cs2_sound); // TODO better naming
const ModelScalar cs2 = cs02;// * expl(get(AC_gamma) * value(ss) / get(AC_cp_sound) + (get(AC_gamma)-ModelScalar(1.l)) * (value(lnrho) - lnrho0));
mom = -mul(gradients(uu), value(uu)) -
cs2 * ((ModelScalar(1.) / get(AC_cp_sound)) * gradient(ss) + gradient(lnrho)) +
get(AC_nu_visc) *
(laplace_vec(uu) + ModelScalar(1.l / 3.l) * gradient_of_divergence(uu) +
ModelScalar(2.l) * mul(S, gradient(lnrho))) + get(AC_zeta) * gradient_of_divergence(uu);
const ModelVector grad_div = gradient_of_divergence(aa);
const ModelVector lap = laplace_vec(aa);
const ModelVector j = (ModelScalar(1.l) / get(AC_mu0)) * (grad_div - lap);
const ModelVector B = curl(aa);
mom = mom + (ModelScalar(1.l) / expl(value(lnrho))) * cross(j, B);
//#else // Basic hydro
const ModelScalar cs02 = get(AC_cs2_sound);
mom = -mul(gradients(uu), value(uu)) -
cs02 * gradient(lnrho) +
get(AC_nu_visc) *
(laplace_vec(uu) + ModelScalar(1. / 3.) * gradient_of_divergence(uu) +
ModelScalar(2.) * mul(S, gradient(lnrho))) + get(AC_zeta) * gradient_of_divergence(uu);
//#endif
const ModelVector mom = -mul(gradients(uu), value(uu)) - cs2 * gradient(lnrho) +
get(AC_nu_visc) * (laplace_vec(uu) +
ModelScalar(1. / 3.) * gradient_of_divergence(uu) +
ModelScalar(2.) * mul(S, gradient(lnrho))) +
get(AC_zeta) * gradient_of_divergence(uu);
return mom;
#endif
return (ModelVector){NAN, NAN, NAN}; // TODO HYDRO ONLY MODEL SOLUTION
}
static inline ModelVector