Computational Details:

"`Moving Circle' at medium Reynolds number"

• length/width of channel: 2.2/0.41
• diameter of circles : 0.2
• maximum vertical speed of circles : +/-1.885
• Dirichlet b.c.'s on circle surface (= differentiation of the circle speed)
• other b.c.'s: zero velocity at walls of the channels
• initial condition at t=0: starting from rest
• viscosity parameter: 1/nu=1000

• coarse mesh (=level 1): 132 cells, 161 vertices, 716 d.o.f.`s
  

  
  
  

• same tensor product mesh for ALL TIME STEPS !!!
• visualization on level 5: 33,792 cells, 34,241 vertices, 169,856 d.o.f.`s
• computation on level 5: 33,792 cells, 34,241 vertices, 169,856 d.o.f.`s
• nonconforming nonparametric rotated bilinear fem's (meanvalue version), UPW

• equidistant time stepping for computation with k=0.003333334
• equidistant time stepping for visualization with k= 0.01 (= 1 frame)
• Total time T=6 seconds corresponds to 2,512 time steps
• fractional step theta scheme

• date: 10/20/01
• simulation by: S.Turek
• visualization by: S.Turek
• SUN ULTRA 45/400: 36 MB, 23,118 seconds
• GMV data: 1,800 MB
• Software: FEATFLOW1.1 + PP2D_MOVBC

• 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 problem-specific data for the applied software version including parameter files and input data can be downloaded here!