From 4e04397acbeeafed4bf3ca9d0e72c7a6e7bcf25d Mon Sep 17 00:00:00 2001
From: Henry Weller <http://cfd.direct>
Date: Sun, 1 Nov 2015 12:24:25 +0000
Subject: [PATCH] tutorials/incompressible/simpleFoam/pitzDaily: Change default
 model to kEpsilon and reduce relaxation factors to improve stability over a
 range of models and systems.

---
 .../simpleFoam/pitzDaily/constant/turbulenceProperties        | 2 +-
 .../incompressible/simpleFoam/pitzDaily/system/fvSolution     | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/tutorials/incompressible/simpleFoam/pitzDaily/constant/turbulenceProperties b/tutorials/incompressible/simpleFoam/pitzDaily/constant/turbulenceProperties
index 147c6edaf..98c1eb5ee 100644
--- a/tutorials/incompressible/simpleFoam/pitzDaily/constant/turbulenceProperties
+++ b/tutorials/incompressible/simpleFoam/pitzDaily/constant/turbulenceProperties
@@ -21,7 +21,7 @@ RAS
 {
     // Tested with kEpsilon, realizableKE, kOmega, kOmegaSST, v2f,
     // ShihQuadraticKE, LienCubicKE.
-    RASModel        v2f;
+    RASModel        kEpsilon;
 
     turbulence      on;
 
diff --git a/tutorials/incompressible/simpleFoam/pitzDaily/system/fvSolution b/tutorials/incompressible/simpleFoam/pitzDaily/system/fvSolution
index 9a4ad9342..230f9706d 100644
--- a/tutorials/incompressible/simpleFoam/pitzDaily/system/fvSolution
+++ b/tutorials/incompressible/simpleFoam/pitzDaily/system/fvSolution
@@ -57,8 +57,8 @@ relaxationFactors
 {
     equations
     {
-        U               0.95;
-        ".*"            0.95;
+        U               0.9; // 0.9 is more stable but 0.95 more convergent
+        ".*"            0.9; // 0.9 is more stable but 0.95 more convergent
     }
 }