Files
cantera/test_problems/CpJump/CpJump.cpp
2021-06-19 16:11:26 -06:00

43 lines
1.3 KiB
C++

// This file is part of Cantera. See License.txt in the top-level directory or
// at https://cantera.org/license.txt for license and copyright information.
// This test checks the algorithm used in setState_HP() to make sure that it is
// tolerant of (small) jumps in the value of H or Cp at temperature boundaries.
#include "cantera/thermo.h"
#include "cantera/base/Solution.h"
#include <iostream>
using namespace std;
using namespace Cantera;
int main(int argc, char** argv)
{
#if defined(_MSC_VER) && _MSC_VER < 1900
_set_output_format(_TWO_DIGIT_EXPONENT);
#endif
try {
auto sol = newSolution("bad_air.yaml");
auto gas = sol->thermo();
double pres = 1.0E5;
gas->setState_TPX(1000.1, pres, "O2:0.4, N2:0.6");
gas->equilibrate("TP", "auto");
double enth = gas->enthalpy_mass();
printf(" enth = %g\n", enth);
enth -= 2.0E2;
printf("attempted equil at (H,P) = %10.5g, %10.5g\n", enth, pres);
gas->setState_HP(enth, pres);
gas->equilibrate("HP", "auto");
enth = gas->enthalpy_mass();
printf(" enth = %g\n", enth);
return 0;
} catch (CanteraError& err) {
std::cerr << err.what() << std::endl;
cerr << "program terminating." << endl;
return -1;
}
}