Computational Details:

"Channel flow with cavity at low Reynolds number"

• nonstationary 2D channel flow over squared cavity
• channel domain of length 5 and height 1
• cavity domain of width and height 1
• total height 2
• length before cavity 1, after cavity 3
• inflow b.c.'s: parabolic with maximum velocity 1
• outflow b.c.'s: natural "do nothing" b.c.'s
• other b.c.'s: zero velocity at fixed walls
• initial condition at t=0: starting from rest
• viscosity parameter: 1/nu=10,000

• coarse mesh (=level 1): 69 cells, 90 vertices, 385 d.o.f.`s
  

  
  
  

• uniform refinements with exact boundary adaption
• visualization on level 5: 17,664 cells, 17,985 vertices, 88,960 d.o.f.`s
• computational mesh on level 6: 70,656 cells, 71,297 vertices, 355,201 d.o.f.`s
• nonconforming nonparametric rotated bilinear fem's (meanvalue version), UPW

• equidistant time stepping for computation with k=0.0333334
• equidistant time stepping for visualization with k=0.2 (= 1 frame)
• Total time T=60 corresponds to 1,800 time steps
• fractional step theta scheme

• date: 07/11/97
• simulation by: S.Turek/W.Kress
• visualization by: S.Turek/W.Kress
• SGI PowerIndigo2/R10000: 60 MB, 54,126 seconds
• AVS data: 892 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!