From a60b1ddd6e199b6e13098da3523570a714641455 Mon Sep 17 00:00:00 2001
From: Andrew Heather <a.heather@opencfd.co.uk>
Date: Thu, 30 Jun 2016 12:46:46 +0100
Subject: [PATCH] ENH: acousticDamping - updated blending factor

---
 .../derived/acousticDampingSource/acousticDampingSource.C     | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/fvOptions/sources/derived/acousticDampingSource/acousticDampingSource.C b/src/fvOptions/sources/derived/acousticDampingSource/acousticDampingSource.C
index af3d504760..8b5cad4be5 100644
--- a/src/fvOptions/sources/derived/acousticDampingSource/acousticDampingSource.C
+++ b/src/fvOptions/sources/derived/acousticDampingSource/acousticDampingSource.C
@@ -67,9 +67,9 @@ void Foam::fv::acousticDampingSource::setBlendingFactor()
         {
             blendFactor_[celli] = 0.0;
         }
-        else if ((d >= r1_) && (d <= (r1_ + r2_)))
+        else if ((d >= r1_) && (d <= r2_))
         {
-            blendFactor_[celli] = (1.0 - cos(pi*mag(d - r1_)/r2_))/2.0;
+            blendFactor_[celli] = (1.0 - cos(pi*mag(d - r1_)/(r2_ - r1_)))/2.0;
         }
     }