From 78c1560090f1478e5586a523fe962bbd5f9af63b Mon Sep 17 00:00:00 2001
From: Even Solbraa <41290109+EvenSol@users.noreply.github.com>
Date: Tue, 31 Dec 2024 09:27:03 +0100
Subject: [PATCH] update (#1222)

---
 .../thermodynamicoperations/flashops/RachfordRice.java       | 5 ++---
 .../thermodynamicoperations/flashops/TPmultiflash.java       | 2 +-
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/src/main/java/neqsim/thermodynamicoperations/flashops/RachfordRice.java b/src/main/java/neqsim/thermodynamicoperations/flashops/RachfordRice.java
index 9fd8ce936..35ea555fc 100644
--- a/src/main/java/neqsim/thermodynamicoperations/flashops/RachfordRice.java
+++ b/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 = "Nielsen2023"; // alternative use Nielsen2023 or Michelsen2001
+  private static String method = "Michelsen2001"; // alternative use Nielsen2023 or Michelsen2001
 
   /**
    * <p>
@@ -188,8 +188,7 @@ public double calcBetaMichelsen2001(double[] K, double[] z)
         nybeta = 1.0 - betal;
       }
       step = gbeta / deriv;
-    } while (Math.abs(step) >= 1.0e-11 && (Math.abs(step) >= 1e-9 && iterations < 50)
-        && iterations < maxIterations);
+    } while (Math.abs(step) >= 1.0e-11 && iterations < maxIterations);
     if (nybeta <= tolerance) {
       nybeta = tolerance;
     } else if (nybeta >= 1.0 - tolerance) {
diff --git a/src/main/java/neqsim/thermodynamicoperations/flashops/TPmultiflash.java b/src/main/java/neqsim/thermodynamicoperations/flashops/TPmultiflash.java
index 3947ec2ac..299c39990 100644
--- a/src/main/java/neqsim/thermodynamicoperations/flashops/TPmultiflash.java
+++ b/src/main/java/neqsim/thermodynamicoperations/flashops/TPmultiflash.java
@@ -373,7 +373,7 @@ public void stabilityAnalysis() {
       int iter = 0;
       double errOld = 1.0e100;
       boolean useaccsubst = true;
-      int maxsucssubiter = 200;
+      int maxsucssubiter = 150;
       int maxiter = 200;
       do {
         errOld = err;