From b10f00788ec0d410b34bc8c5a8a017a5375e56d4 Mon Sep 17 00:00:00 2001
From: sjplimp <sjplimp@f3b2605a-c512-4ea7-a41b-209d697bcdaa>
Date: Wed, 23 Mar 2011 14:25:39 +0000
Subject: [PATCH] git-svn-id: svn://svn.icms.temple.edu/lammps-ro/trunk@5817
 f3b2605a-c512-4ea7-a41b-209d697bcdaa

---
 src/fix_wall_region.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/fix_wall_region.cpp b/src/fix_wall_region.cpp
index 8b1fc6c166..9c7cb70648 100644
--- a/src/fix_wall_region.cpp
+++ b/src/fix_wall_region.cpp
@@ -367,6 +367,7 @@ void FixWallRegion::colloid(double r, double rad)
 
 void FixWallRegion::harmonic(double r)
 {
-  fwall = 2.0*epsilon*r;
-  eng = epsilon*r*r;
+  double dr = cutoff - r;
+  fwall = 2.0*epsilon*dr;
+  eng = epsilon*dr*dr;
 }