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Move the calculation of the temperatures to the constructor of the SWIFT i/o plugin

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This commit is contained in:
Matthieu Schaller 2021-03-13 23:33:26 +01:00
parent a3e6581902
commit 7a463aad2e
1 changed files with 28 additions and 26 deletions
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54
src/plugins/output_swift.cc
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@ -49,6 +49,7 @@ protected:
std::array<uint32_t,7> npartTotal_, npartTotalHighWord_;
std::array<double,7> mass_;
double time_;
double ceint_, h_;
public:
//! constructor
@ -147,6 +148,29 @@ public:
std::string desc = cf_.get_value<std::string>("random", "descriptor");
HDFWriteGroupAttribute(fname_, "ICs_parameters", "Descriptor", desc);
}
if (bdobaryons_) {
const double gamma = cf_.get_value_safe<double>("cosmology", "gamma", 5.0 / 3.0);
const double YHe = pcc_->cosmo_param_["YHe"];
const double omegab = pcc_->cosmo_param_["Omega_b"];
const double Tcmb0 = pcc_->cosmo_param_["Tcmb"];
// compute gas internal energy
const double npol = (fabs(1.0 - gamma) > 1e-7) ? 1.0 / (gamma - 1.) : 1.0;
const double unitv = 1e5;
const double adec = 1.0 / (160. * std::pow(omegab * hubble_param_ * hubble_param_ / 0.022, 2.0 / 5.0));
const double Tini = astart_ < adec ? Tcmb0 / astart_ : Tcmb0 / astart_ / astart_ * adec;
const double mu = (Tini > 1.e4) ? 4.0 / (8. - 5. * YHe) : 4.0 / (1. + 3. * (1. - YHe));
ceint_ = 1.3806e-16 / 1.6726e-24 * Tini * npol / mu / unitv / unitv;
music::ilog.Print("Swift : Calculated initial gas temperature: %.2f K/mu", Tini / mu);
music::ilog.Print("Swift : set initial internal energy to %.2e km^2/s^2", ceint_);
h_ = boxsize_ / hubble_param_ / cf_.get_value<double>("setup","GridRes");
music::ilog.Print("Swift : set initial smoothing length to mean inter-part separation: %.2f Mpc", h_);
}
}
// use destructor to write header post factum
@ -226,7 +250,7 @@ public:
mass_[sid] = 0.0;
else
mass_[sid] = Omega_species * munit_ / pc.get_global_num_particles();
HDFCreateGroup(fname_, std::string("PartType") + std::to_string(sid));
//... write positions and velocities.....
@ -258,34 +282,12 @@ public:
// write GAS internal energy and smoothing length if baryons are enabled
if( bdobaryons_ && s == cosmo_species::baryon) {
const double gamma = cf_.get_value_safe<double>("cosmology", "gamma", 5.0 / 3.0);
const double YHe = pcc_->cosmo_param_["YHe"];
//const double Omega0 = cf_.get_value<double>("cosmology", "Omega_m");
const double omegab = pcc_->cosmo_param_["Omega_b"];
const double Tcmb0 = pcc_->cosmo_param_["Tcmb"];
// compute gas internal energy
const double npol = (fabs(1.0 - gamma) > 1e-7) ? 1.0 / (gamma - 1.) : 1.0;
const double unitv = 1e5;
const double adec = 1.0 / (160. * std::pow(omegab * hubble_param_ * hubble_param_ / 0.022, 2.0 / 5.0));
const double Tini = astart_ < adec ? Tcmb0 / astart_ : Tcmb0 / astart_ / astart_ * adec;
const double mu = (Tini > 1.e4) ? 4.0 / (8. - 5. * YHe) : 4.0 / (1. + 3. * (1. - YHe));
const double ceint = 1.3806e-16 / 1.6726e-24 * Tini * npol / mu / unitv / unitv;
music::ilog.Print("Swift : Calculated initial gas temperature: %.2f K/mu", Tini / mu);
music::ilog.Print("Swift : set initial internal energy to %.2e km^2/s^2", ceint);
std::vector<write_real_t> data( npart_[0], ceint );
std::vector<write_real_t> data( npart_[0], ceint_ );
HDFWriteDataset(fname_, std::string("PartType") + std::to_string(sid) + std::string("/InternalEnergy"), data);
const double h = boxsize_ / hubble_param_ / cf_.get_value<double>("setup","GridRes");
music::ilog.Print("Swift : set initial smoothing length to mean inter-part separation: %.2f Mpc", h);
data.assign( npart_[0], h);
data.assign( npart_[0], h_);
HDFWriteDataset(fname_, std::string("PartType") + std::to_string(sid) + std::string("/SmoothingLength"), data);
}
}
};