eosTest.cpp

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#include <gtest/gtest.h>
#include <memory>
#include <string>
#include <sstream>
 
#include "helm.h"
#include "resourceManager.h"
#include "config.h"
#include "composition.h"
#include "EOS.h"


class eosTest : public ::testing::Test {};
 
std::string TEST_CONFIG = std::string(getenv("MESON_SOURCE_ROOT")) + "/tests/testsConfig.yaml";

 
TEST_F(eosTest, read_helm_table) {
    serif::config::Config::getInstance().loadConfig(TEST_CONFIG);
    const serif::resource::ResourceManager& rm = serif::resource::ResourceManager::getInstance();
    auto& eos = std::get<std::unique_ptr<serif::eos::EOSio>>(rm.getResource("eos:helm"));
    const auto& table = eos->getTable();
    const auto& helmTable = *std::get<std::unique_ptr<serif::eos::helmholtz::HELMTable>>(table);
    std::stringstream ss;
    ss << helmTable;
    EXPECT_EQ(ss.str(), "HELMTable Data:\n  imax: 541, jmax: 201\n  Temperature Range: [1000, 1e+13]\n  Density Range: [1e-12, 1e+15]\n");
}
 
TEST_F(eosTest, get_helm_EOS) {
    constexpr int nel=3;
    double xMass[nel], aIon[nel], zIon[nel];
    serif::eos::helmholtz::HELMEOSInput eos1;
 
    xMass[0] = 0.75; aIon[0] =  1.0; zIon[0] = 1.0;
    xMass[1] = 0.23; aIon[1] =  4.0; zIon[1] = 2.0;
    xMass[2] = 0.02; aIon[2] = 12.0; zIon[2] = 6.0;
 
    eos1.T = 1.0e8;
    eos1.rho = 1.0e6;
 
    double aSum = 0.0;
    double zSum = 0.0;
    for (int i=0; i<nel; i++) {
        aSum += xMass[i]/aIon[i];
        zSum += xMass[i]*zIon[i]/aIon[i];
    }
    eos1.abar = 1.0/aSum;
    eos1.zbar = eos1.abar*zSum;
 
    serif::resource::ResourceManager& rm = serif::resource::ResourceManager::getInstance();
    auto& eos = std::get<std::unique_ptr<serif::eos::EOSio>>(rm.getResource("eos:helm"));
    auto& table = eos->getTable();
    auto& helmTable = *std::get<std::unique_ptr<serif::eos::helmholtz::HELMTable>>(table);
    serif::eos::helmholtz::HELMEOSOutput helmEos = get_helm_EOS(eos1, helmTable);
 
    constexpr double absErr = 1e-12;
 
    //Check composition info
    EXPECT_NEAR(     helmEos.ye, 8.75e-01, absErr);
 
    //Check E, P, S and derivatives of each wrt Rho and T
    EXPECT_NEAR( helmEos.etaele, 2.3043348231021554e+01, absErr);
    EXPECT_NEAR(   helmEos.etot, 1.1586558190936826e+17, 1e3);
    EXPECT_NEAR(helmEos.denerdd, 6.1893000468285858e+10, 1e-2);
    EXPECT_NEAR(helmEos.denerdt, 1.2129708972542575e+08, 1e-7);
    EXPECT_NEAR(   helmEos.ptot, 6.9610135220017030e+22, 1e10);
    EXPECT_NEAR(helmEos.dpresdd, 1.0296440482849070e+17, 1e3);
    EXPECT_NEAR(helmEos.dpresdt, 7.7171347517311625e+13, 1.0);
    EXPECT_NEAR(   helmEos.stot, 6.0647461970567346e+08, 1e-7);
    EXPECT_NEAR(helmEos.dentrdd,-7.7171347517311645e+01, absErr);
    EXPECT_NEAR(helmEos.dentrdt, 1.2129708972542577e+00, absErr);
 
    // Maxwell relations, should always be zero
    EXPECT_NEAR(    helmEos.dse,              0, absErr);
    EXPECT_NEAR(    helmEos.dpe,              0, absErr);
    EXPECT_NEAR(    helmEos.dsp,              0, absErr);
}
 
TEST_F(eosTest, eos_using_composition) {
    serif::composition::Composition composition;
    composition.registerSymbol({
        "H-1",
        "He-4",
        "C-12",
        "O-16",
        "Ne-20",
        "Fe-56",
        "N-14",
        "Si-28",
        "Mg-24"
    }, true);
    composition.setMassFraction("H-1", 0.75);
    composition.setMassFraction("He-4", 0.23);
    composition.setMassFraction("C-12", 0.0044);
    composition.setMassFraction("O-16", 0.0096);
    composition.setMassFraction("Ne-20", 0.002);
    composition.setMassFraction("Fe-56", 0.0018);
    composition.setMassFraction("N-14", 0.001);
    composition.setMassFraction("Si-28", 0.0008);
    composition.setMassFraction("Mg-24", 0.0004);
    composition.finalize();
 
    serif::resource::ResourceManager& rm = serif::resource::ResourceManager::getInstance();
    auto& EOSio = std::get<std::unique_ptr<serif::eos::EOSio>>(rm.getResource("eos:helm"));
 
    serif::eos::EOS EOS(*EOSio);
 
    serif::eos::EOSInput eosInput;
    eosInput.temperature = 1.0e8; // Temperature in K
    eosInput.density = 1.0e6; // Density in g/cm^3
    eosInput.composition = composition; // Set the composition
 
    serif::eos::EOSOutput eosOutput;
    EXPECT_NO_THROW(eosOutput = EOS.get(eosInput));
    eosOutput = EOS.get(eosInput);
 
    const double pressureFraction = eosOutput.pressure.total / 6.9548533046915791E+22;
    constexpr double relError = 1e-6;
    EXPECT_NEAR(pressureFraction, 1.0, relError);
}