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update model #382

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Apr 4, 2022
Merged

update model #382

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7 changes: 6 additions & 1 deletion src/main/java/neqsim/PVTsimulation/simulation/SaturationPressure.java
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Original file line number Diff line number Diff line change
Expand Up @@ -43,6 +43,11 @@ public double calcSaturationPressure() {
thermoOps.TPflash();
} while (getThermoSystem().getNumberOfPhases() > 1
&& getThermoSystem().getPressure() < 1000.0);

if(getThermoSystem().getPressure()>1000.0) {
return getThermoSystem().getPressure();
}

double minPres = getThermoSystem().getPressure() - 10.0;
double maxPres = getThermoSystem().getPressure();
int iteration = 0;
Expand Down Expand Up @@ -98,7 +103,7 @@ public static void main(String[] args) {
tempSystem.setMixingRule(9);// "HV", "UNIFAC_UMRPRU");
tempSystem.init(0);
tempSystem.init(1);
tempSystem.saveFluid(928);
//tempSystem.saveFluid(928);

SimulationInterface satPresSim = new SaturationPressure(tempSystem);
satPresSim.run();
Expand Down
38 changes: 38 additions & 0 deletions src/test/java/neqsim/PVTsimulation/simulation/SaturationPressureTest.java
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Original file line number Diff line number Diff line change
@@ -0,0 +1,38 @@
package neqsim.PVTsimulation.simulation;

import static org.junit.jupiter.api.Assertions.*;
import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.Test;
import neqsim.thermo.system.SystemInterface;
import neqsim.thermo.system.SystemSrkEos;

class SaturationPressureTest {

@BeforeAll
static void setUpBeforeClass() throws Exception {}


@Test
void testCalcSaturationPressure() {
SystemInterface tempSystem = new SystemSrkEos(273.15 + 20, 10.0);
tempSystem.addComponent("nitrogen", 0.34);
tempSystem.addComponent("CO2", 0.59);
tempSystem.addComponent("methane", 87.42);
tempSystem.addComponent("ethane", 3.02);
tempSystem.addComponent("propane", 4.31);
tempSystem.addComponent("i-butane", 0.93);
tempSystem.addComponent("n-butane", 1.71);
tempSystem.addComponent("i-pentane", 0.74);
tempSystem.addComponent("n-pentane", 0.85);
tempSystem.addComponent("n-hexane", 0.38);
tempSystem.addTBPfraction("C7", 0.05, 109.00 / 1000.0, 0.6912);
tempSystem.addTBPfraction("C8", 0.069, 120.20 / 1000.0, 0.7255);
tempSystem.addTBPfraction("C9", 0.014, 129.5 / 1000.0, 0.7454);
tempSystem.addTBPfraction("C10", 0.0078, 135.3 / 1000.0, 0.7864);
tempSystem.setMixingRule(2);
SimulationInterface satPresSim = new SaturationPressure(tempSystem);
satPresSim.run();
assertEquals(satPresSim.getThermoSystem().getPressure(), 122.28338813781738, 0.1);
}

}