Version: SMASH-1.8
smash::ThermodynamicOutput Class Reference

#include <thermodynamicoutput.h>

Writes the thermodynamic quantities at a specified point versus time.

This class is a temporary solution to write thermodynamic quantities out. Calculations are called directly inside the output functions. In future it should be substituted by some more general output.

Definition at line 37 of file thermodynamicoutput.h.

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Public Member Functions

 ThermodynamicOutput (const bf::path &path, const std::string &name, const OutputParameters &out_par)
 Construct Output param[in] path Path to output param[in] name Filename param[in] out_par Parameters of output. More...
 
 ~ThermodynamicOutput ()
 Default destructor. More...
 
void at_eventstart (const Particles &particles, const int event_number) override
 writes the event header More...
 
void at_eventend (const Particles &particles, const int event_number, double impact_parameter, bool empty_event) override
 only flushes the output the file More...
 
void at_intermediate_time (const Particles &particles, const std::unique_ptr< Clock > &clock, const DensityParameters &dens_param) override
 Writes thermodynamics every fixed time interval. More...
 
void density_along_line (const char *file_name, const ParticleList &plist, const DensityParameters &param, DensityType dens_type, const ThreeVector &line_start, const ThreeVector &line_end, int n_points)
 Prints density along the specified line. More...
 
- Public Member Functions inherited from smash::OutputInterface
 OutputInterface (std::string name)
 Construct output interface. More...
 
virtual ~OutputInterface ()=default
 
virtual void at_interaction (const Action &action, const double density)
 Called whenever an action modified one or more particles. More...
 
virtual void thermodynamics_output (const ThermodynamicQuantity tq, const DensityType dt, RectangularLattice< DensityOnLattice > &lattice)
 Output to write thermodynamics from the lattice. More...
 
virtual void thermodynamics_output (const ThermodynamicQuantity tq, const DensityType dt, RectangularLattice< EnergyMomentumTensor > &lattice)
 Output to write energy-momentum tensor and related quantities from the lattice. More...
 
virtual void thermodynamics_output (const GrandCanThermalizer &gct)
 Output to write energy-momentum tensor and related quantities from the thermalizer class. More...
 
bool is_dilepton_output () const
 Get, whether this is the dilepton output? More...
 
bool is_photon_output () const
 Get, whether this is the photon output? More...
 
bool is_IC_output () const
 Get, whether this is the IC output? More...
 
const char * to_string (const ThermodynamicQuantity tq)
 Convert thermodynamic quantities to strings. More...
 
const char * to_string (const DensityType dens_type)
 Convert density types to strings. More...
 

Private Attributes

RenamingFilePtr file_
 Pointer to output file. More...
 
const OutputParameters out_par_
 Structure that holds all the information about what to printout. More...
 

Additional Inherited Members

- Protected Attributes inherited from smash::OutputInterface
const bool is_dilepton_output_
 Is this the dilepton output? More...
 
const bool is_photon_output_
 Is this the photon output? More...
 
const bool is_IC_output_
 Is this the IC output? More...
 

Constructor & Destructor Documentation

◆ ThermodynamicOutput()

smash::ThermodynamicOutput::ThermodynamicOutput ( const bf::path &  path,
const std::string &  name,
const OutputParameters out_par 
)

Construct Output param[in] path Path to output param[in] name Filename param[in] out_par Parameters of output.

Definition at line 116 of file thermodynamicoutput.cc.

119  : OutputInterface(name),
120  file_{path / "thermodynamics.dat", "w"},
121  out_par_(out_par) {
122  std::fprintf(file_.get(), "# %s thermodynamics output\n", VERSION_MAJOR);
123  const ThreeVector r = out_par.td_position;
124  if (out_par_.td_smearing) {
125  std::fprintf(file_.get(), "# @ point (%6.2f, %6.2f, %6.2f) [fm]\n", r.x1(),
126  r.x2(), r.x3());
127  } else {
128  std::fprintf(file_.get(), "# averaged over the entire volume\n");
129  }
130  std::fprintf(file_.get(), "# %s\n", to_string(out_par.td_dens_type));
131  std::fprintf(file_.get(), "# time [fm/c], ");
132  if (out_par_.td_rho_eckart) {
133  std::fprintf(file_.get(), "%s [fm^-3], ",
135  }
136  if (out_par_.td_tmn) {
137  if (out_par_.td_smearing) {
138  std::fprintf(file_.get(), "%s [GeV/fm^3] 00 01 02 03 11 12 13 22 23 33, ",
140  } else {
141  std::fprintf(file_.get(), "%s [GeV] 00 01 02 03 11 12 13 22 23 33, ",
143  }
144  }
145  if (out_par_.td_tmn_landau) {
146  if (out_par_.td_smearing) {
147  std::fprintf(file_.get(), "%s [GeV/fm^3] 00 01 02 03 11 12 13 22 23 33, ",
149  } else {
150  std::fprintf(file_.get(), "%s [GeV] 00 01 02 03 11 12 13 22 23 33, ",
152  }
153  }
154  if (out_par_.td_v_landau) {
155  std::fprintf(file_.get(), "%s x y z, ",
157  }
158  if (out_par_.td_jQBS) {
159  if (out_par_.td_smearing) {
160  std::fprintf(file_.get(), "j_QBS [(Q,B,S)/fm^3] (0 1 2 3)x3");
161  } else {
162  std::fprintf(file_.get(), "j_QBS [(Q,B,S)] (0 1 2 3)x3");
163  }
164  }
165  std::fprintf(file_.get(), "\n");
166 }

◆ ~ThermodynamicOutput()

smash::ThermodynamicOutput::~ThermodynamicOutput ( )

Default destructor.

Definition at line 168 of file thermodynamicoutput.cc.

168 {}

Member Function Documentation

◆ at_eventstart()

void smash::ThermodynamicOutput::at_eventstart ( const Particles particles,
const int  event_number 
)
overridevirtual

writes the event header

Parameters
[in]particlesDummy, is just here to satisfy inheritance
[in]event_numberCurrent event number, that will be written to the header

Implements smash::OutputInterface.

Definition at line 170 of file thermodynamicoutput.cc.

171  {
172  std::fprintf(file_.get(), "# event %i\n", event_number);
173 }
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◆ at_eventend()

void smash::ThermodynamicOutput::at_eventend ( const Particles particles,
const int  event_number,
double  impact_parameter,
bool  empty_event 
)
overridevirtual

only flushes the output the file

Parameters
[in]particlesDummy, is just here to satisfy inheritance
[in]event_numberDummy, is just here to satisfy inheritance
[in]impact_parameterDummy, is just here to satisfy inheritance
[in]empty_eventDummy, is just here to satisfy inheritance

Implements smash::OutputInterface.

Definition at line 175 of file thermodynamicoutput.cc.

178  {
179  std::fflush(file_.get());
180 }
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◆ at_intermediate_time()

void smash::ThermodynamicOutput::at_intermediate_time ( const Particles particles,
const std::unique_ptr< Clock > &  clock,
const DensityParameters dens_param 
)
overridevirtual

Writes thermodynamics every fixed time interval.

For configuring the output see ASCII Thermodynamics Output.

Parameters
[in]particlesParticles, from which thermodynamic variables are computed
[in]clockClock, needed to get current time
[in]dens_paramset of parameters, defining smearing. For more info about smearing see ASCII Thermodynamics Output.

Reimplemented from smash::OutputInterface.

Definition at line 182 of file thermodynamicoutput.cc.

184  {
185  std::fprintf(file_.get(), "%6.2f ", clock->current_time());
186  constexpr bool compute_gradient = false;
187  if (out_par_.td_rho_eckart) {
188  const double rho = std::get<0>(current_eckart(
189  out_par_.td_position, particles, dens_param, out_par_.td_dens_type,
190  compute_gradient, out_par_.td_smearing));
191  std::fprintf(file_.get(), "%7.4f ", rho);
192  }
194  EnergyMomentumTensor Tmn;
195  for (const auto &p : particles) {
196  const double dens_factor =
198  if (std::abs(dens_factor) < really_small) {
199  continue;
200  }
201  if (out_par_.td_smearing) {
202  const auto sf =
204  p.position().threevec() - out_par_.td_position, p.momentum(),
205  1.0 / p.momentum().abs(), dens_param, compute_gradient)
206  .first;
207  if (sf < really_small) {
208  continue;
209  }
210  Tmn.add_particle(p, dens_factor * sf * dens_param.norm_factor_sf());
211  } else {
212  Tmn.add_particle(p, dens_factor);
213  }
214  }
215  const FourVector u = Tmn.landau_frame_4velocity();
216  const EnergyMomentumTensor Tmn_L = Tmn.boosted(u);
217  if (out_par_.td_tmn) {
218  for (int i = 0; i < 10; i++) {
219  std::fprintf(file_.get(), "%15.12f ", Tmn[i]);
220  }
221  }
222  if (out_par_.td_tmn_landau) {
223  for (int i = 0; i < 10; i++) {
224  std::fprintf(file_.get(), "%7.4f ", Tmn_L[i]);
225  }
226  }
227  if (out_par_.td_v_landau) {
228  std::fprintf(file_.get(), "%7.4f %7.4f %7.4f ", -u[1] / u[0],
229  -u[2] / u[0], -u[3] / u[0]);
230  }
231  }
232  if (out_par_.td_jQBS) {
233  FourVector jQ = std::get<1>(current_eckart(
234  out_par_.td_position, particles, dens_param, DensityType::Charge,
235  compute_gradient, out_par_.td_smearing));
236  FourVector jB = std::get<1>(current_eckart(
237  out_par_.td_position, particles, dens_param, DensityType::Baryon,
238  compute_gradient, out_par_.td_smearing));
239  FourVector jS = std::get<1>(current_eckart(
240  out_par_.td_position, particles, dens_param, DensityType::Strangeness,
241  compute_gradient, out_par_.td_smearing));
242  std::fprintf(file_.get(), "%15.12f %15.12f %15.12f %15.12f ", jQ[0], jQ[1],
243  jQ[2], jQ[3]);
244  std::fprintf(file_.get(), "%15.12f %15.12f %15.12f %15.12f ", jB[0], jB[1],
245  jB[2], jB[3]);
246  std::fprintf(file_.get(), "%15.12f %15.12f %15.12f %15.12f ", jS[0], jS[1],
247  jS[2], jS[3]);
248  }
249  std::fprintf(file_.get(), "\n");
250 }
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◆ density_along_line()

void smash::ThermodynamicOutput::density_along_line ( const char *  file_name,
const ParticleList &  plist,
const DensityParameters param,
DensityType  dens_type,
const ThreeVector line_start,
const ThreeVector line_end,
int  n_points 
)

Prints density along the specified line.

Useful to make 1D plots of density profiles.

Parameters
[in]file_namename of the file to print out
[in]paramParameters for density calculation
[in]plistparticles, from which density is computed
[in]dens_typetype of density
[in]line_startstarting point of the line
[in]line_endending point of the line
[in]n_pointsnumber of points along the line, where density is printed out

Definition at line 252 of file thermodynamicoutput.cc.

255  {
256  ThreeVector r;
257  std::ofstream a_file;
258  a_file.open(file_name, std::ios::out);
259  const bool compute_gradient = false;
260  const bool smearing = true;
261 
262  for (int i = 0; i <= n_points; i++) {
263  r = line_start + (line_end - line_start) * (1.0 * i / n_points);
264  double rho_eck = std::get<0>(
265  current_eckart(r, plist, param, dens_type, compute_gradient, smearing));
266  a_file << r.x1() << " " << r.x2() << " " << r.x3() << " " << rho_eck
267  << "\n";
268  }
269 }
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Member Data Documentation

◆ file_

RenamingFilePtr smash::ThermodynamicOutput::file_
private

Pointer to output file.

Definition at line 100 of file thermodynamicoutput.h.

◆ out_par_

const OutputParameters smash::ThermodynamicOutput::out_par_
private

Structure that holds all the information about what to printout.

Definition at line 102 of file thermodynamicoutput.h.


The documentation for this class was generated from the following files:
smash::DensityType::Strangeness
smash::OutputInterface::OutputInterface
OutputInterface(std::string name)
Construct output interface.
Definition: outputinterface.h:41
ThermodynamicQuantity::TmnLandau
smash::ThermodynamicOutput::file_
RenamingFilePtr file_
Pointer to output file.
Definition: thermodynamicoutput.h:100
ThermodynamicQuantity::LandauVelocity
smash::OutputInterface::to_string
const char * to_string(const ThermodynamicQuantity tq)
Convert thermodynamic quantities to strings.
Definition: outputinterface.h:153
smash::OutputParameters::td_jQBS
bool td_jQBS
Print out QBS 4-currents or not?
Definition: outputparameters.h:133
smash::OutputParameters::td_v_landau
bool td_v_landau
Print out Landau velocity of type td_dens_type or not?
Definition: outputparameters.h:130
smash::unnormalized_smearing_factor
std::pair< double, ThreeVector > unnormalized_smearing_factor(const ThreeVector &r, const FourVector &p, const double m_inv, const DensityParameters &dens_par, const bool compute_gradient=false)
Implements gaussian smearing for any quantity.
Definition: density.cc:38
smash::ThermodynamicOutput::out_par_
const OutputParameters out_par_
Structure that holds all the information about what to printout.
Definition: thermodynamicoutput.h:102
smash::really_small
constexpr double really_small
Numerical error tolerance.
Definition: constants.h:37
smash::RenamingFilePtr::get
FILE * get()
Get the underlying FILE* pointer.
Definition: file.cc:27
smash::density_factor
double density_factor(const ParticleType &type, DensityType dens_type)
Get the factor that determines how much a particle contributes to the density type that is computed.
Definition: density.cc:17
smash::OutputParameters::td_position
ThreeVector td_position
Point, where thermodynamic quantities are calculated.
Definition: outputparameters.h:112
smash::DensityType::Charge
ThermodynamicQuantity::Tmn
smash::OutputParameters::td_rho_eckart
bool td_rho_eckart
Print out Eckart rest frame density of type td_dens_type or not?
Definition: outputparameters.h:118
smash::OutputParameters::td_tmn
bool td_tmn
Print out energy-momentum tensor of type td_dens_type or not?
Definition: outputparameters.h:121
smash::current_eckart
std::tuple< double, FourVector, ThreeVector, ThreeVector, ThreeVector > current_eckart(const ThreeVector &r, const ParticleList &plist, const DensityParameters &par, DensityType dens_type, bool compute_gradient, bool smearing)
Calculates Eckart rest frame density and 4-current of a given density type and optionally the gradien...
Definition: density.cc:149
ThermodynamicQuantity::EckartDensity
smash::OutputParameters::td_dens_type
DensityType td_dens_type
Type (e.g., baryon/pion/hadron) of thermodynamic quantity.
Definition: outputparameters.h:115
smash::pdg::p
constexpr int p
Proton.
Definition: pdgcode_constants.h:28
smash::DensityType::Baryon
smash::OutputParameters::td_smearing
bool td_smearing
Whether smearing is on or off; WARNING : if smearing is off, then final result is in GeV instead of G...
Definition: outputparameters.h:139
smash::OutputParameters::td_tmn_landau
bool td_tmn_landau
Print out energy-momentum tensor in Landau rest frame (of type td_dens_type) or not?
Definition: outputparameters.h:127