From: Omotayo Omosebi <dr.omosebi@gmail.com>
Date: Tue, 6 Aug 2019 20:44:05 +0000 (-0400)
Subject: Fix for Saturation Equation
X-Git-Tag: v9.2.0-rc1~1222^2~2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e50bfc4b7be1e8734d292359324b70f30a0ca446;p=dealii.git

Fix for Saturation Equation
---

diff --git a/examples/step-21/doc/intro.dox b/examples/step-21/doc/intro.dox
index 4c1f2c8d96..d1e082b700 100644
--- a/examples/step-21/doc/intro.dox
+++ b/examples/step-21/doc/intro.dox
@@ -108,7 +108,7 @@ In summary, what we get are the following two equations:
   - \nabla \cdot (\mathbf{K}\lambda(S) \nabla p) &=& q
   \qquad \textrm{in}\ \Omega\times[0,T],
   \\
-  S_{t} + \mathbf{u} \cdot \nabla F(S) &=& 0
+  S_{t} + \nabla (F(S) \cdot \mathbf{u}) &=& 0
   \qquad \textrm{in}\ \Omega\times[0,T].
 @f}
 Here, $p=p(\mathbf x, t), S=S(\mathbf x, t)$ are now time dependent