Channel flow around moving flaps (by C.M. Mueller) 
The following examples show the flow in a twodimensional
channel with moving flaps, as a sequence of 6 snapshots for a
specific configuration (see below), taken at different times of the underlying simulation.
The following simulations are the first step in a study
of heart flap movements. Boundary conditions are very simple at this time
and so is the geometry of this problem. In addition, the Reynolds number Re was
chosen to be quite moderate (as typical for blood flow!) to ensure nonturbulent flow,
but nevertheless being nonstationary. Four
configurations with different parameters were considered and one of them
was simulated twice, the second time on a finer mesh and for higher Re.
More information on the method of incorporating moving objects into the
simulation can be found in
Stefan Turek's CFDbook, Springer.
The complexity of the physical problem depends on the:
A systematic variation of these different configurations is part of the following flow situations. 

Please send any comments and suggestions to: featflow@featflow.de 