remove error messages (#1223)

* remove error messages

* update

Author: EvenSol

src/main/java/neqsim/thermodynamicoperations/flashops/RachfordRice.java

@@ -22,7 +22,7 @@ public class RachfordRice implements Serializable {
   static Logger logger = LogManager.getLogger(RachfordRice.class);
   private static final long serialVersionUID = 1000;
   private double[] beta = new double[2];
-  private static String method = "Michelsen2001"; // alternative use Nielsen2023 or Michelsen2001
+  private static String method = "Nielsen2023"; // alternative use Nielsen2023 or Michelsen2001
 
   /**
    * <p>

src/test/java/neqsim/process/processmodel/CompressorModuleTest.java

@@ -71,14 +71,14 @@ public void testProcess() {
     valve1.setOutletPressure(10.0, "bara");
 
     StreamInterface recycleScrubberStream = feedStream.clone("Recycle stream");
-    recycleScrubberStream.setFlowRate(1.0, "kg/hr");
+    recycleScrubberStream.setFlowRate(0.0001, "kg/hr");
 
     ThreePhaseSeparator secondStageSeparator =
         new ThreePhaseSeparator("2nd stage separator", valve1.getOutletStream());
     secondStageSeparator.addStream(recycleScrubberStream);
 
     StreamInterface gasRecycleStream = feedStream.clone("gas recycle stream");
-    gasRecycleStream.setFlowRate(1.0, "kg/hr");
+    gasRecycleStream.setFlowRate(0.0001, "kg/hr");
 
     Mixer gasmixer = new Mixer("gas recycle mixer");
     gasmixer.addStream(secondStageSeparator.getGasOutStream());

src/test/java/neqsim/thermodynamicoperations/flashops/RachfordRiceTest.java

@@ -21,10 +21,13 @@ void testCalcBeta() {
     }
 
     try {
+      String startMetod = RachfordRice.getMethod();
       RachfordRice rachfordRice = new RachfordRice();
       RachfordRice.setMethod("Nielsen2023");
       Assertions.assertEquals(0.407070707, rachfordRice.calcBeta(K, z), 1e-6);
       RachfordRice.setMethod("Michelsen2001");
+      Assertions.assertEquals(0.407070707, rachfordRice.calcBeta(K, z), 1e-6);
+      RachfordRice.setMethod(startMetod);
     } catch (Exception e) {
       logger.error(e.getMessage());;
     }