Computational Details:

"(Regularized) Driven Cavity (I) at low Reynolds number (height 2, width 1 of the cavity)"

• rectangular domain of height 2 and width 1
• Dirichlet b.c.'s (parabolic with maximum value of 1) for the u-velocity at the top
• other b.c.'s: zero velocity at fixed walls
• initial condition at t=0: starting from rest
• viscosity parameter: 1/nu=5,000

• coarse mesh (=level 3): 32 cells, 45 vertices, 184 d.o.f.'s
  

  
  
  

• uniform refinements with exact boundary adaption
• visualization on level 6: 2,048 cells, 2,145 vertices, 10,432 d.o.f.`s
• computational mesh on level 8: 32,768 cells, 33,153 vertices, 164,608 d.o.f.`s
• nonconforming nonparametric rotated bilinear fem's (meanvalue version), UPW

• equidistant time stepping for computation with k=0.027777778
• equidistant time stepping for visualization with k=0.166666666 (= 1 frame)
• Total time T=50 seconds corresponds to 1,800 time steps
• fractional step theta scheme

• date: 12/18/97
• simulation by: S.Nauber
• visualization by: S.Nauber
• SUN ULTRA1/140: 27 MB, 25,981 seconds
• AVS data: 410 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!