update

equinor · Dec 10, 2023 · 9016f5d · 9016f5d
1 parent ab8484c
commit 9016f5d
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Showing 4 changed files with 24 additions and 5 deletions.
diff --git a/src/main/java/neqsim/processSimulation/measurementDevice/CompressorMonitor.java b/src/main/java/neqsim/processSimulation/measurementDevice/CompressorMonitor.java
@@ -36,6 +36,7 @@ public CompressorMonitor(Compressor compressor) {
    */
   public CompressorMonitor(String name, Compressor compressor) {
     super(name, "rpm");
+    this.compressor = compressor;
   }
 
   /** {@inheritDoc} */
@@ -47,6 +48,10 @@ public void displayResult() {
   /** {@inheritDoc} */
   @Override
   public double getMeasuredValue(String unit) {
-    return compressor.getSpeed();
+    if (unit.equals("distance to surge")) {
+      return compressor.getDistanceToSurge();
+    } else {
+      return compressor.getSpeed();
+    }
   }
 }
diff --git a/src/main/java/neqsim/processSimulation/processEquipment/compressor/Compressor.java b/src/main/java/neqsim/processSimulation/processEquipment/compressor/Compressor.java
@@ -1002,6 +1002,12 @@ public boolean isSurge(double flow, double head) {
     return getAntiSurge().isSurge();
   }
 
+  public double getDistanceToSurge() {
+    return (getInletStream().getFlowRate("m3/hr")
+        - getCompressorChart().getSurgeCurve().getSurgeFlow(getPolytropicFluidHead()))
+        / getCompressorChart().getSurgeCurve().getSurgeFlow(getPolytropicFluidHead());
+  }
+
   /**
    * <p>
    * isStoneWall.

diff --git a/src/main/java/neqsim/processSimulation/processEquipment/compressor/CompressorInterface.java b/src/main/java/neqsim/processSimulation/processEquipment/compressor/CompressorInterface.java
@@ -71,4 +71,6 @@ public interface CompressorInterface extends ProcessEquipmentInterface, TwoPortI
    * @return a {@link neqsim.processSimulation.processEquipment.compressor.AntiSurge} object
    */
   public AntiSurge getAntiSurge();
+
+  public double getDistanceToSurge();
 }
diff --git a/src/test/java/neqsim/processSimulation/processSystem/ProcessSystemRunTransientTest.java b/src/test/java/neqsim/processSimulation/processSystem/ProcessSystemRunTransientTest.java
@@ -7,6 +7,7 @@
 import neqsim.processSimulation.SimulationInterface;
 import neqsim.processSimulation.controllerDevice.ControllerDeviceBaseClass;
 import neqsim.processSimulation.controllerDevice.ControllerDeviceInterface;
+import neqsim.processSimulation.measurementDevice.CompressorMonitor;
 import neqsim.processSimulation.measurementDevice.LevelTransmitter;
 import neqsim.processSimulation.measurementDevice.PressureTransmitter;
 import neqsim.processSimulation.measurementDevice.VolumeFlowTransmitter;
@@ -585,6 +586,8 @@ public void testAntiSurgeControl() {
     compressor1.setCalculateSteadyState(false);
     compressor1.setOutletPressure(100.0);
 
+    CompressorMonitor surgemonitor = new CompressorMonitor(compressor1);
+
     Separator separator2 = new Separator("separator_2");
     separator2.addStream(compressor1.getOutletStream());
     separator2.setCalculateSteadyState(false);
@@ -595,12 +598,14 @@ public void testAntiSurgeControl() {
     Stream gasfromsep2 = new Stream("gas from sep", separator2.getGasOutStream());
 
     Splitter splitter = new Splitter("splitter1", gasfromsep2);
-    splitter.setSplitFactors(new double[] {1.0, 0.0});
+    splitter.setFlowRates(new double[] {-1, 1.0}, "kg/hr");
 
     ThrottlingValve resycleValve =
         new ThrottlingValve("anti surge valve", splitter.getSplitStream(1));
     resycleValve.setPressure(47.0);
 
+
+
     SetPoint pressureset =
         new SetPoint("HP pump set", resycleValve, "pressure", separator1.getGasOutStream());
 
@@ -616,7 +621,6 @@ public void testAntiSurgeControl() {
     PressureTransmitter separatorPressureTransmitter =
         new PressureTransmitter(separator2.getGasOutStream());
 
-
     ControllerDeviceInterface speedController = new ControllerDeviceBaseClass();
     speedController.setReverseActing(true);
     speedController.setTransmitter(separatorPressureTransmitter);
@@ -628,6 +632,7 @@ public void testAntiSurgeControl() {
     p.add(valve1);
     p.add(separator1);
     p.add(compressor1);
+    p.add(surgemonitor);
     p.add(separator2);
     p.add(gasfromsep2);
     p.add(splitter);
@@ -661,7 +666,7 @@ public void testAntiSurgeControl() {
     System.out.println("speed " + compressor1.getSpeed());
     p.setTimeStep(10.0);
 
-
+    valve2.setPercentValveOpening(5);
     for (int i = 0; i < 100; i++) {
       System.out.println("time " + i + " speed " + compressor1.getSpeed() + "feed flow "
           + stream1.getFlowRate("kg/hr") + " compressor flow rate "
@@ -670,7 +675,8 @@ public void testAntiSurgeControl() {
           + (compressor1.getOutletStream().getPressure()
               - compressor1.getInletStream().getPressure())
           + " pres inn " + compressor1.getInletStream().getPressure() + " pres out "
-          + compressor1.getOutletStream().getPressure());
+          + compressor1.getOutletStream().getPressure() + " distancetosurge "
+          + surgemonitor.getMeasuredValue("distance to surge"));
       p.runTransient();
     }