From 6b92a1fbc6c6ec10220f6437a5dd22b648fe05f4 Mon Sep 17 00:00:00 2001
From: Even Solbraa <41290109+EvenSol@users.noreply.github.com>
Date: Sun, 10 Nov 2024 19:35:48 +0000
Subject: [PATCH] update

---
 .../process/equipment/splitter/Splitter.java  | 26 ++++++++++++++++---
 .../processmodel/CompressorModule.java        |  5 ++--
 2 files changed, 25 insertions(+), 6 deletions(-)

diff --git a/src/main/java/neqsim/process/equipment/splitter/Splitter.java b/src/main/java/neqsim/process/equipment/splitter/Splitter.java
index 1edc3494c9..3cc898f4cf 100644
--- a/src/main/java/neqsim/process/equipment/splitter/Splitter.java
+++ b/src/main/java/neqsim/process/equipment/splitter/Splitter.java
@@ -1,5 +1,6 @@
 package neqsim.process.equipment.splitter;
 
+import java.util.Arrays;
 import java.util.UUID;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
@@ -33,6 +34,8 @@ public class Splitter extends ProcessEquipmentBaseClass implements SplitterInter
   double[] splitFactor = new double[1];
   double[] flowRates;
   String flowUnit = "mole/sec";
+  protected double[] oldSplitFactor = null;
+  protected double[] oldFlowRates = null;
 
   /**
    * Constructor for Splitter.
@@ -60,8 +63,7 @@ public Splitter(String name, StreamInterface inStream) {
    * </p>
    *
    * @param name a {@link java.lang.String} object
-   * @param inletStream a {@link neqsim.process.equipment.stream.StreamInterface}
-   *        object
+   * @param inletStream a {@link neqsim.process.equipment.stream.StreamInterface} object
    * @param i a int
    */
   public Splitter(String name, StreamInterface inletStream, int i) {
@@ -178,6 +180,19 @@ public StreamInterface getSplitStream(int i) {
     return splitStream[i];
   }
 
+  /** {@inheritDoc} */
+  @Override
+  public boolean needRecalculation() {
+    if (!inletStream.needRecalculation() && Arrays.equals(splitFactor, oldSplitFactor)
+        && Arrays.equals(oldFlowRates, flowRates)) {
+      isSolved = true;
+      return false;
+    } else {
+      isSolved = false;
+      return true;
+    }
+  }
+
   /** {@inheritDoc} */
   @Override
   public void run(UUID id) {
@@ -215,7 +230,12 @@ public void run(UUID id) {
           new ThermodynamicOperations(splitStream[i].getThermoSystem());
       thermoOps.TPflash();
     }
-
+    if (splitFactor != null) {
+      oldSplitFactor = Arrays.copyOf(splitFactor, splitFactor.length);
+    }
+    if (flowRates != null) {
+      oldFlowRates = Arrays.copyOf(flowRates, flowRates.length);
+    }
     setCalculationIdentifier(id);
   }
 
diff --git a/src/test/java/neqsim/process/processmodel/CompressorModule.java b/src/test/java/neqsim/process/processmodel/CompressorModule.java
index 38991ce729..e8d4571590 100644
--- a/src/test/java/neqsim/process/processmodel/CompressorModule.java
+++ b/src/test/java/neqsim/process/processmodel/CompressorModule.java
@@ -134,11 +134,10 @@ public void testProcess() {
 
     operations.run();
 
-    assertEquals(2042.17826, recycleScrubberStream.getFlowRate("kg/hr"), 0.1);
+    assertEquals(2038.8824, recycleScrubberStream.getFlowRate("kg/hr"), 0.1);
 
     neqsim.process.equipment.compressor.CompressorChartGenerator compchartgenerator =
-        new neqsim.process.equipment.compressor.CompressorChartGenerator(
-            seccondStageCompressor);
+        new neqsim.process.equipment.compressor.CompressorChartGenerator(seccondStageCompressor);
     compchartgenerator.generateCompressorChart("mid range");
 
     seccondStageCompressor.setCompressorChart(compchartgenerator.generateCompressorChart("normal"));