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Commit a9b43c96 authored by Matthieu Schaller's avatar Matthieu Schaller
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Added calculation of the energy to inject from the enrichment channels.

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1 merge request!787Eagle stellar evolution matthieu
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examples/SubgridTests/StellarEvolution/stellar_evolution.yml
+ 32
− 30
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......@@ -78,33 +78,35 @@ EAGLEChemistry:
# Properties of the EAGLE feedback and enrichment model.
EAGLEFeedback:
use_SNe_feedback: 0 # No SNe feedback in this test.
use_AGB_enrichment: 1
use_SNII_enrichment: 1
use_SNIa_enrichment: 1
filename: ./yieldtables/
IMF_min_mass_Msun: 0.1
IMF_max_mass_Msun: 100.0
SNII_min_mass_Msun: 6.0
SNII_max_mass_Msun: 100.0
SNII_wind_delay_Gyr: 0.03
SNII_delta_T_K: 3.16228e7
SNII_Energy_erg: 1.0e51
SNII_Energy_fraction_min: 3.0
SNII_Energy_fraction_max: 0.3
SNII_Energy_fraction_Z_0: 0.0012663729
SNII_Energy_fraction_n_0_H_p_cm3: 0.67
SNII_Energy_fraction_n_n: 0.8686
SNII_Energy_fraction_n_Z: 0.8686
SNIa_max_mass_Msun: 8.0
SNIa_timescale_Gyr: 2.0
SNIa_efficiency_p_Msun: 0.002
SNII_yield_factor_Hydrogen: 1.0 # Correction to the yields following the EAGLE REF values
SNII_yield_factor_Helium: 1.0
SNII_yield_factor_Carbon: 0.5
SNII_yield_factor_Nitrogen: 1.0
SNII_yield_factor_Oxygen: 1.0
SNII_yield_factor_Neon: 1.0
SNII_yield_factor_Magnesium: 2.0
SNII_yield_factor_Silicon: 1.0
SNII_yield_factor_Iron: 0.5
use_SNe_feedback: 0 # Global switch for SNe thermal feedback.
use_AGB_enrichment: 1 # Global switch for enrichement from AGB stars.
use_SNII_enrichment: 1 # Global switch for enrichement from SNII stars.
use_SNIa_enrichment: 1 # Global switch for enrichement from SNIa stars.
filename: ./yieldtables/ # Path to the directory containing the EAGLE yield tables.
IMF_min_mass_Msun: 0.1 # Minimal stellar mass considered for the Chabrier IMF in solar masses.
IMF_max_mass_Msun: 100.0 # Maximal stellar mass considered for the Chabrier IMF in solar masses.
SNII_min_mass_Msun: 6.0 # Minimal mass considered for SNII feedback (not SNII enrichment!) in solar masses.
SNII_max_mass_Msun: 100.0 # Maximal mass considered for SNII feedback (not SNII enrichment!) in solar masses.
SNII_wind_delay_Gyr: 0.03 # Time in Gyr between a star's birth and the SNII thermal feedback event.
SNII_delta_T_K: 3.16228e7 # Change in temperature to apply to the gas particle in a SNII thermal feedback event in Kelvin.
SNII_Energy_erg: 1.0e51 # Energy of one SNII explosion in ergs.
SNII_Energy_fraction_min: 3.0 # Maximal fraction of energy applied in a SNII feedback event.
SNII_Energy_fraction_max: 0.3 # Minimal fraction of energy applied in a SNII feedback event.
SNII_Energy_fraction_Z_0: 0.0012663729 # Pivot point for the metallicity dependance of the SNII energy fraction (metal mass fraction).
SNII_Energy_fraction_n_0_H_p_cm3: 0.67 # Pivot point for the birth density dependance of the SNII energy fraction in cm^-3.
SNII_Energy_fraction_n_Z: 0.8686 # Power-law for the metallicity dependance of the SNII energy fraction.
SNII_Energy_fraction_n_n: 0.8686 # Power-law for the birth density dependance of the SNII energy fraction.
SNIa_max_mass_Msun: 8.0 # Maximal mass considered for SNIa feedback and enrichment in solar masses.
SNIa_timescale_Gyr: 2.0 # Time-scale of the exponential decay of the SNIa rates in Gyr.
SNIa_efficiency_p_Msun: 0.002 # Normalisation of the SNIa rates in inverse solar masses.
SNIa_Energy_erg: 1.0e51 # Energy of one SNIa explosion in ergs.
AGB_ejecta_velocity_km_p_s: 10.0 # Velocity of the AGB ejectas in km/s.
SNII_yield_factor_Hydrogen: 1.0 # (Optional) Correction factor to apply to the Hydrogen yield from the SNII channel.
SNII_yield_factor_Helium: 1.0 # (Optional) Correction factor to apply to the Helium yield from the SNII channel.
SNII_yield_factor_Carbon: 0.5 # (Optional) Correction factor to apply to the Carbon yield from the SNII channel.
SNII_yield_factor_Nitrogen: 1.0 # (Optional) Correction factor to apply to the Nitrogen yield from the SNII channel.
SNII_yield_factor_Oxygen: 1.0 # (Optional) Correction factor to apply to the Oxygen yield from the SNII channel.
SNII_yield_factor_Neon: 1.0 # (Optional) Correction factor to apply to the Neon yield from the SNII channel.
SNII_yield_factor_Magnesium: 2.0 # (Optional) Correction factor to apply to the Magnesium yield from the SNII channel.
SNII_yield_factor_Silicon: 1.0 # (Optional) Correction factor to apply to the Silicon yield from the SNII channel.
SNII_yield_factor_Iron: 0.5 # (Optional) Correction factor to apply to the Iron yield from the SNII channel.
examples/parameter_example.yml
+ 2
− 0
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......@@ -360,6 +360,8 @@ EAGLEFeedback:
SNIa_max_mass_Msun: 8.0 # Maximal mass considered for SNIa feedback and enrichment in solar masses.
SNIa_timescale_Gyr: 2.0 # Time-scale of the exponential decay of the SNIa rates in Gyr.
SNIa_efficiency_p_Msun: 0.002 # Normalisation of the SNIa rates in inverse solar masses.
SNIa_Energy_erg: 1.0e51 # Energy of one SNIa explosion in ergs.
AGB_ejecta_velocity_km_p_s: 10.0 # Velocity of the AGB ejectas in km/s.
SNII_yield_factor_Hydrogen: 1.0 # (Optional) Correction factor to apply to the Hydrogen yield from the SNII channel.
SNII_yield_factor_Helium: 1.0 # (Optional) Correction factor to apply to the Helium yield from the SNII channel.
SNII_yield_factor_Carbon: 0.5 # (Optional) Correction factor to apply to the Carbon yield from the SNII channel.
......
src/feedback/EAGLE/feedback.c
+ 40
− 17
View file @ a9b43c96
......@@ -344,6 +344,9 @@ INLINE static void evolve_SNIa(const float log10_min_mass,
sp->feedback_data.to_distribute.Fe_mass_from_SNIa +=
num_SNIa * props->yield_SNIa_IMF_resampled[chemistry_element_Fe] *
props->solar_mass_to_mass;
/* Compute the energy to be injected */
sp->feedback_data.to_distribute.d_energy += num_SNIa * props->E_SNIa;
}
/**
......@@ -717,7 +720,7 @@ void compute_stellar_evolution(const struct feedback_props* feedback_props,
/* Integration interval is zero - this can happen if minimum and maximum
* dying masses are above imf_max_mass_Msun. Return without doing any
* feedback. */
* enrichment. */
if (min_dying_mass_Msun == max_dying_mass_Msun) return;
/* Life is better in log */
......@@ -739,20 +742,27 @@ void compute_stellar_evolution(const struct feedback_props* feedback_props,
stellar_yields, feedback_props, sp);
}
#ifdef SWIFT_DEBUG_CHECKS
if (sp->feedback_data.to_distribute.mass != 0.f)
error("Injected mass will be lost");
#endif
/* Compute the total mass to distribute (H + He metals) */
sp->feedback_data.to_distribute.mass =
sp->feedback_data.to_distribute.total_metal_mass +
sp->feedback_data.to_distribute.metal_mass[chemistry_element_H] +
sp->feedback_data.to_distribute.metal_mass[chemistry_element_He];
/* /\* Compute energy change due to thermal and kinetic energy of ejecta *\/
*/
/* sp->feedback_data.to_distribute.d_energy = */
/* sp->feedback_data.to_distribute.mass * */
/* (feedback_props->ejecta_specific_thermal_energy + */
/* 0.5 * (sp->v[0] * sp->v[0] + sp->v[1] * sp->v[1] + sp->v[2] *
* sp->v[2]) * */
/* cosmo->a2_inv); */
/* Compute energy change due to kinetic energy of ejectas */
sp->feedback_data.to_distribute.d_energy +=
sp->feedback_data.to_distribute.mass *
feedback_props->AGB_ejecta_specific_kinetic_energy;
/* Compute energy change due to kinetic energy of the star */
sp->feedback_data.to_distribute.d_energy +=
sp->feedback_data.to_distribute.mass * 0.5f *
(sp->v[0] * sp->v[0] + sp->v[1] * sp->v[1] + sp->v[2] * sp->v[2]) *
cosmo->a2_inv;
}
/**
......@@ -867,6 +877,27 @@ void feedback_props_init(struct feedback_props* fp,
parser_get_param_float(params, "EAGLEFeedback:SNIa_timescale_Gyr");
fp->SNIa_timescale_Gyr_inv = 1.f / fp->SNIa_timescale_Gyr;
/* Energy released by supernova type Ia */
fp->E_SNIa_cgs =
parser_get_param_double(params, "EAGLEFeedback:SNIa_Energy_erg");
fp->E_SNIa =
fp->E_SNIa_cgs / units_cgs_conversion_factor(us, UNIT_CONV_ENERGY);
/* Properties of the SNIa enrichment model -------------------------------- */
/* Read AGB ejecta velocity */
const float ejecta_velocity_km_p_s = parser_get_param_float(
params, "EAGLEFeedback:AGB_ejecta_velocity_km_p_s");
/* Convert to internal units */
const float ejecta_velocity_cgs = ejecta_velocity_km_p_s * 1e5;
const float ejecta_velocity =
ejecta_velocity_cgs / units_cgs_conversion_factor(us, UNIT_CONV_SPEED);
/* Convert to specific thermal energy */
fp->AGB_ejecta_specific_kinetic_energy =
0.5f * ejecta_velocity * ejecta_velocity;
/* Gather common conversion factors --------------------------------------- */
/* Calculate internal mass to solar mass conversion factor */
......@@ -889,14 +920,6 @@ void feedback_props_init(struct feedback_props* fp,
fp->rho_to_n_cgs =
(X_H / m_p) * units_cgs_conversion_factor(us, UNIT_CONV_NUMBER_DENSITY);
// MATTHIEU up to here
/* Set ejecta thermal energy */
const float ejecta_velocity =
1.0e6 / units_cgs_conversion_factor(
us, UNIT_CONV_SPEED); // EAGLE parameter is 10 km/s
fp->ejecta_specific_thermal_energy = 0.5 * ejecta_velocity * ejecta_velocity;
/* Initialise the IMF ------------------------------------------------- */
init_imf(fp);
......
src/feedback/EAGLE/feedback_iact.h
+ 18
− 16
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......@@ -216,15 +216,14 @@ runner_iact_nonsym_feedback_apply(const float r2, const float *dx,
pj->chemistry_data.metal_mass_fraction_from_AGB =
new_metal_mass_from_AGB / new_mass;
/* /\* Update momentum *\/ */
/* for (int i = 0; i < 3; i++) { */
/* pj->v[i] += si->feedback_data.to_distribute.mass * Omega_frac * */
/* (si->v[i] - pj->v[i]); */
/* } */
/* Update momentum */
for (int i = 0; i < 3; i++) {
pj->v[i] += si->feedback_data.to_distribute.mass * Omega_frac *
(si->v[i] - pj->v[i]);
}
/* Energy feedback */
// d_energy += si->feedback_data.to_distribute.d_energy *
// Omega_frac;
// d_energy += ;
/* if (feedback_props->continuous_heating) { */
/* // We're doing ONLY continuous heating */
......@@ -233,16 +232,18 @@ runner_iact_nonsym_feedback_apply(const float r2, const float *dx,
/* si->mass_init; */
/* } else { */
/* /\* Add contribution from thermal and kinetic energy of ejected material */
/* (and continuous SNIa feedback) *\/ */
/* u_init = hydro_get_physical_internal_energy(pj, xp, cosmo); */
/* du = d_energy / hydro_get_mass(pj); */
/* hydro_set_physical_internal_energy(pj, xp, cosmo, u_init + du); */
/* hydro_set_drifted_physical_internal_energy(pj, cosmo, u_init + du); */
/* Add contribution from thermal and kinetic energy of ejected material
(and continuous SNIa feedback) */
/* const double u_init = hydro_get_physical_internal_energy(pj, xp, cosmo); */
/* const double delta_energy = si->feedback_data.to_distribute.d_energy *
* Omega_frac; */
/* const double delta_u = delta_energy / new_mass; */
/* const double u_new = u_init + delta_u; */
/* hydro_set_physical_internal_energy(pj, xp, cosmo, u_new); */
/* hydro_set_drifted_physical_internal_energy(pj, cosmo, u_new); */
/* Get the SNII feedback properties */
const float prob = si->feedback_data.to_distribute.SNII_heating_probability;
const float delta_u = si->feedback_data.to_distribute.SNII_delta_u;
/* Are we doing some SNII feedback? */
if (prob > 0.f) {
......@@ -254,8 +255,9 @@ runner_iact_nonsym_feedback_apply(const float r2, const float *dx,
if (rand < prob) {
/* Compute new energy of this particle */
const float u_init = hydro_get_physical_internal_energy(pj, xp, cosmo);
const float u_new = u_init + delta_u;
const double u_init = hydro_get_physical_internal_energy(pj, xp, cosmo);
const float delta_u = si->feedback_data.to_distribute.SNII_delta_u;
const double u_new = u_init + delta_u;
/* Inject energy into the particle */
hydro_set_physical_internal_energy(pj, xp, cosmo, u_new);
......
src/feedback/EAGLE/feedback_properties.h
+ 11
− 5
View file @ a9b43c96
......@@ -87,11 +87,6 @@ struct feedback_props {
/*! Are we doing SNIa enrichment? */
int with_SNIa_enrichment;
/* ------------ Energy injection ----------------- */
/* Kinetic energy of SN ejecta per unit mass (check name with Richard)*/
float ejecta_specific_thermal_energy;
/* ------------ Yield tables ----------------- */
/* Yield tables for AGB and SNII */
......@@ -138,6 +133,17 @@ struct feedback_props {
/*! Log 10 of the maximal mass used for SNIa feedback (in solar masses) */
float log10_SNIa_max_mass_msun;
/*! Energy released by one supernova type II in cgs units */
double E_SNIa_cgs;
/*! Energy released by one supernova type II in internal units */
float E_SNIa;
/* ------------- AGB parameters ---------------- */
/*! Specific kinetic energy injected from AGB ejectas (in internal units). */
float AGB_ejecta_specific_kinetic_energy;
/* ------------- Conversion factors --------------- */
/*! Conversion factor from internal mass unit to solar mass */
......
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