79 lines
2.5 KiB
C++
79 lines
2.5 KiB
C++
/////////////////////////////////////////////////////////////
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//
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// mixture-averaged transport properties
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//
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/////////////////////////////////////////////////////////////
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// This file is part of Cantera. See License.txt in the top-level directory or
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// at https://cantera.org/license.txt for license and copyright information.
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#include "cantera/transport.h"
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#include "example_utils.h"
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#include "cantera/thermo/IdealGasPhase.h"
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using namespace Cantera;
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using std::cout;
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using std::endl;
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int transport_example1(int job)
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{
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try {
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cout << "Mixture-averaged transport properties." << endl;
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if (job > 0) {
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cout << "Viscosity, thermal conductivity, and mixture-averaged\n"
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<< "diffusion coefficients at 2 atm for a "
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<< "range of temperatures" << endl;
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}
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if (job <= 1) {
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return 0;
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}
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// create a gas mixture, and set its state
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auto sol = newSolution("gri30.yaml", "gri30", "Mix");
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auto gas = sol->thermo();
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double temp = 500.0;
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double pres = 2.0*OneAtm;
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gas->setState_TPX(temp, pres, "H2:1.0, CH4:0.1");
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// create a transport manager that implements
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// mixture-averaged transport properties
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auto tr = sol->transport();
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size_t nsp = gas->nSpecies();
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// create a 2D array to hold the outputs
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int ntemps = 20;
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Array2D output(nsp+3, ntemps);
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// main loop
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for (int i = 0; i < ntemps; i++) {
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temp = 500.0 + 100.0*i;
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gas->setState_TP(temp, pres);
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output(0,i) = temp;
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output(1,i) = tr->viscosity();
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output(2,i) = tr->thermalConductivity();
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tr->getMixDiffCoeffs(&output(3,i));
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}
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// make a Tecplot data file and an Excel spreadsheet
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std::string plotTitle = "transport example 1: "
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"mixture-averaged transport properties";
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plotTransportSoln("tr1.dat", "TEC", plotTitle, *(sol->thermo()), output);
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plotTransportSoln("tr1.csv", "XL", plotTitle, *(sol->thermo()), output);
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// print final temperature
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cout << "Output files:" << endl
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<< " tr1.csv (Excel CSV file)" << endl
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<< " tr1.dat (Tecplot data file)" << endl;
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} catch (CanteraError& err) {
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// handle exceptions thrown by Cantera
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std::cout << err.what() << std::endl;
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cout << " terminating... " << endl;
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appdelete();
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return -1;
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}
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return 0;
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}
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