From a4b62e6549c34eb6f809dda4b10cfcee5dc21fb1 Mon Sep 17 00:00:00 2001
From: sergio <sergio>
Date: Fri, 2 Sep 2016 11:51:59 -0700
Subject: [PATCH] Adding area weighted average to U mean calculation for
 uniformJump option in fan BC

---
 .../fields/fvPatchFields/derived/fan/fanFvPatchFields.C        | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/finiteVolume/fields/fvPatchFields/derived/fan/fanFvPatchFields.C b/src/finiteVolume/fields/fvPatchFields/derived/fan/fanFvPatchFields.C
index d2580b1b82..fd0b61bdaa 100644
--- a/src/finiteVolume/fields/fvPatchFields/derived/fan/fanFvPatchFields.C
+++ b/src/finiteVolume/fields/fvPatchFields/derived/fan/fanFvPatchFields.C
@@ -46,7 +46,8 @@ void Foam::fanFvPatchField<Foam::scalar>::calcFanJump()
         scalarField Un(max(phip/patch().magSf(), scalar(0)));
         if (uniformJump_)
         {
-             Un = gAverage(Un);
+            scalar area = gSum(patch().magSf());
+            Un = gSum(Un*patch().magSf())/area;
         }
 
         if (phi.dimensions() == dimDensity*dimVelocity*dimArea)