From 805cdcecd7e958388429fdfdac73586d795af7ab Mon Sep 17 00:00:00 2001
From: Cristian Lalescu <Cristian.Lalescu@ds.mpg.de>
Date: Wed, 1 Jul 2015 10:21:22 +0200
Subject: [PATCH] make Kolmogorov force *actually* A*sin(y)

---
 src/fluid_solver.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/fluid_solver.cpp b/src/fluid_solver.cpp
index 0ebae211..d476691b 100644
--- a/src/fluid_solver.cpp
+++ b/src/fluid_solver.cpp
@@ -218,12 +218,12 @@ void fluid_solver<R>::add_forcing(\
     if (this->cd->myrank == this->cd->rank[this->fmode]) \
     { \
         cindex = ((this->fmode - this->cd->starts[0]) * this->cd->sizes[1])*this->cd->sizes[2]; \
-        field[cindex*3+2][1] -= this->famplitude*factor/2; \
+        field[cindex*3+2][0] -= this->famplitude*factor/2; \
     } \
     if (this->cd->myrank == this->cd->rank[this->cd->sizes[0] - this->fmode]) \
     { \
         cindex = ((this->cd->sizes[0] - this->fmode - this->cd->starts[0]) * this->cd->sizes[1])*this->cd->sizes[2]; \
-        field[cindex*3+2][1] += this->famplitude*factor/2; \
+        field[cindex*3+2][0] -= this->famplitude*factor/2; \
     } \
 } \
  \
-- 
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