Commit 56e86960 authored by Josh Borrow's avatar Josh Borrow
Browse files

Added back the u_dt timestep limiter

parent 56f0c397
......@@ -153,9 +153,10 @@ hydro_get_comoving_soundspeed(const struct part *restrict p) {
/* Compute the sound speed -- see theory section for justification */
/* IDEAL GAS ONLY -- P-U does not work with generic EoS. */
const float square_rooted = sqrtf(hydro_gamma * p->rho / p->pressure_bar);
const float square_rooted = sqrtf(hydro_gamma * p->pressure_bar / p->rho);
return square_rooted;
return p->u * hydro_gamma_minus_one * square_rooted;
}
/**
......@@ -287,7 +288,6 @@ __attribute__((always_inline)) INLINE static float hydro_compute_timestep(
const float dt_cfl = 2.f * kernel_gamma * CFL_condition * cosmo->a * p->h /
(cosmo->a_factor_sound_speed * p->force.v_sig);
/* Limit maximum change in u */
const float dt_u_change =
(p->u_dt != 0.0f) ? fabsf(const_max_u_change * p->u / p->u_dt)
: FLT_MAX;
......
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