Flow in a centrifugal finishing machine (OTEC) at medium Reynolds number in 3D 

Computational details


Short description and remarks


Visualization



Short description and remarks
Flow at medium Reynolds number in a centrifugal finishing
machine with rotating lower part. Here,
the rotation speed is periodically oscillating so that
prescribed boundary velocities are
varying by about 50 % around the mean velocity. More details
on this simulation and the
industrial background can be found directly from
OTEC PRAEZISIONSFINISH.
This simulation here is only a prestudy for a real
configuration, but it contains already
some of the essential features. For instance, the purely 2D
rotations of the (lower) boundary part
generate convective flows in vertical direction so that a
completely 3D behaviour is the
result which can be demonstrated via the following MPEG
movies!
At the moment, the interior part/hole of the inner rotating
cylinder is described via the "Fictitious Boundary
Conditions". This means that the position of the actual
boundary is
determined via "filters" and incorporated into the iterative
solvers!
A more detailed description of the underlying mathematical
and numerical concepts is given in
Stefan Turek's CFDbook, Springer .
This is one of the first 3D pages in the `Virtual Album' which
has been completely created via
GMV (`General Mesh Viewer'). A description of the visualization
steps corresponding to each MPEG video is described
here
or can be downloaded here!




Visualization




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