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Description of the flow problem
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diameter of the circle: 2
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rotational speed 1 (counterclockwise) on the circle
(tangential speed)
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other b.c.'s: zero velocity at the characters
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initial condition at t=0: starting fully developed
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viscosity parameter: 1/nu=1,000,000
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Description of the spatial discretization
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coarse mesh (=level 1): 50 cells, 75 vertices, 302 d.o.f.'s
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uniform refinements with exact boundary adaption
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visualization on level 6: 51,200 cells, 52,031 vertices,
257,664 d.o.f.`s
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computational mesh on level 8: 819,200 cells, 822,527 vertices,
4,102,656 d.o.f.`s
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nonconforming nonparametric rotated bilinear fem's (meanvalue
version), UPW
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Description of the temporal discretization
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equidistant time stepping for computation with k=0.011111112
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equidistant time stepping for visualization with k= 0.1 (= 1
frame)
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Total time T= 30 seconds corresponds to
2,700 time steps
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fractional step theta scheme
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Computer requirements
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date: 11/27/98
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simulation by: J.F.Acker/S.Turek
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visualization by: J.F.Acker
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SUN E450/250MHZ 671 MB, 919,000 seconds
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GMV data: 2,225 MB
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Software: FEATFLOW1.1 (BOUSS)
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Mathematical details
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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.
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The problem-specific data for the applied software version
including parameter files and
input data can be downloaded
here!
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Please send any comments and suggestions to:
featflow@featflow.de
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