
Description of the flow problem

height of the domain: 3

diameter of the exterior domain: 1.5 up to 2.8

diameter of the interior cylinder part: 1

height of the lower rotating and the interior cylinder part: 1

varying rotational speed of the lower wall and interior
cylinder of maximum order 0.5 up to 1.5

other b.c.'s: zero velocity at the fixed walls

initial condition at t=0: starting almost fully developed
(with coarse grid solution)

viscosity parameter: 1/nu=100,000


Description of the spatial discretization

coarse mesh (=level 1): 12 cells, 28 vertices, 147 d.o.f.'s

uniform refinements with exact boundary adaption

visualization on level 5: 49,152 cells, 51,553 vertices,
498,432 d.o.f.`s

computational mesh on level 6: 393,216 cells, 402,625 vertices,
3,959,808 d.o.f.`s

nonconforming nonparametric rotated trilinear fem's
(meanvalue version), UPW


Description of the temporal discretization

fixed time stepping for computation with k=0.111112

fixed time stepping for visualization with k=0.333334 (= 1
frame)

Total time T=25 seconds corresponds to
225 time steps

Fractional step theta scheme


Computer requirements

date: 04/23/99

simulation by: S.Turek

visualization by: S.Buijssen

SUN ULTRA60/300 MHz: 450 MB, 332,818 seconds

GMV data: 580 MB

Software: FEATFLOW1.2 (CC3D_MOVBC)


Mathematical details

For more details about numerical and algorithmic aspects see the
`Mathematical Background' in the
FEATFLOW manual
or
visit our
paper archive for much more details.

The problemspecific data for the applied software version
including parameter files and
input data can be downloaded
here!


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