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Description of the flow problem
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length/width of channel: 14/3
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diameter of flaps: 0.5
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maximum angular speed of flaps: variable
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Dirichlet b.c.'s on flap surface (= differentiation of the
flap speed)
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Dirichlet b.c.'s for right inflow with parabolic profile of
different order
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natural b.c.'s on the right edge
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other b.c.'s: zero velocity at walls of the channels
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initial condition at t=0: starting from rest
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viscosity parameter: 1/nu=100 up to 1/nu=1,000
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Description of the spatial discretization
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coarse mesh (=level ?): 132 cells, 161 vertices, 716 d.o.f.`s
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same
tensor product mesh
for ALL TIME STEPS
and ALL CONFIGURATIONS!!!
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computation/visualization on level 6: 33,792 cells, 34,241
vertices, 169,856 d.o.f.`s
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computation on level 7: 135,168 cells, 136,065 vertices,
677,632 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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adaptive time stepping for computations
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time stepping for visualization of order k=0.025 (= 1 frame)
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total time T=8 seconds corresponds up to more than
thousand time steps
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fractional step theta scheme
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Computer requirements
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date: 02/20/99
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simulation by:C.M.Mueller/S.Turek
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visualization by: C.M. Mueller
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SUN workstations (different types)
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AVS data: several hundreds of MB's, CPU times up to several
days (on the finest level 7!!!)
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Software: FEATFLOW1.1 + CC2D_MOVBC
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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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Some 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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