From: Alexey Ozeritskiy <aozeritsky@gmail.com>
Date: Fri, 8 May 2020 22:03:15 +0000 (+0300)
Subject: Properly initalization of velocity vector
X-Git-Tag: v9.2.0-rc1~59^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=274f3a762ef1ca69f5a219d895d86b534de84e27;p=dealii.git

Properly initalization of velocity vector
---

diff --git a/examples/step-35/step-35.cc b/examples/step-35/step-35.cc
index b48218bc5c..4298f427ab 100644
--- a/examples/step-35/step-35.cc
+++ b/examples/step-35/step-35.cc
@@ -796,12 +796,10 @@ namespace Step35
         vel_exact.set_time(t_0);
         vel_exact.set_component(d);
         VectorTools::interpolate(dof_handler_velocity,
-                                 Functions::ZeroFunction<dim>(),
+                                 vel_exact,
                                  u_n_minus_1[d]);
         vel_exact.advance_time(dt);
-        VectorTools::interpolate(dof_handler_velocity,
-                                 Functions::ZeroFunction<dim>(),
-                                 u_n[d]);
+        VectorTools::interpolate(dof_handler_velocity, vel_exact, u_n[d]);
       }
   }