Computational Details:

"Flow around the `LUTZ` characters (Lutz Gehlen) at high Reynolds number"

• diameter of the circle: 2
• rotational speed 1 (counterclockwise) on the circle (tangential speed)
• other b.c.'s: zero velocity at the characters
• initial condition at t=0: starting fully developed
• viscosity parameter: 1/nu=1,000,000

• coarse mesh (=level 1): 94 cells, 132 vertices, 552 d.o.f.'s
  

  
  
  

• uniform refinements with exact boundary adaption
• visualization on level 5: 24064 cells, 24717 vertices, 121632 d.o.f.`s
• computational mesh on level 6: 96256 cells, 97565 vertices, 483904 d.o.f.`s
• nonconforming nonparametric rotated bilinear fem's (meanvalue version), UPW

• equidistant time stepping for computation with k=0.022222223
• equidistant time stepping for visualization with k= 0.2 (= 1 frame)
• Total time T= 50 seconds corresponds to 2.250 time steps
• fractional step theta scheme

• date: 22/06/99
• simulation by: Lutz Gehlen, S.Turek, L.Rivkind, J.F.Acker
• visualization by: Lutz Gehlen
• SUN ULTRA1/170: 82 MB, 72,746 seconds
• AVS data: 922 MB
• Software: FEATFLOW1.1 (BOUSS)

• 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!