Computational Details:

"(Regularized) Driven Cavity (I) at medium Reynolds number with interior square"

• square domain of height 3 and width 3 with the interior square
• Dirichlet b.c.'s: the parabolic u-velocity profile with maximum value of 1 at the top
• other b.c.'s: zero velocity at fixed walls
• initial condition at t=0: starting from fully developed flow
• viscosity parameter: 1/nu=5,000

• coarse mesh (=level 2): 32 cells, 48 vertices, 192 d.o.f.`s
  

  
  
  

• uniform refinements with exact boundary adaption
• visualization on level 6: 8,192 cells, 8,448 vertices, 41,472 d.o.f.`s
• computational mesh on level 8: 131,072 cells, 132,096 vertices, 657,408 d.o.f.`s
• nonconforming nonparametric rotated bilinear fem's (meanvalue version), UPW

• equidistant time stepping for computation with k=0.033333334
• equidistant time stepping for visualization with k=0.2 (= 1 frame)
• Total time T=100 seconds corresponds to 3,000 time steps
• fractional step theta scheme

• date: WS 97/98
• simulation by:
• visualization by: L. Seioukova
• SUN ULTRA1/140: 103 MB, 154,216 seconds
• AVS data: 677 MB
• Software: FEATFLOW1.0 + 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!