Computational Details:

"Channel flow with multiple bumps at low Reynolds number"

• nonstationary 2D channel flow with multiple bumps
• channel domain of length 14 and height 1
• 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=100

• coarse mesh (=level 1): 14 cells, 30 vertices, 100 d.o.f.`s
• shown mesh (=level 3): 224 cells, 285 vertices, 1,240 d.o.f.`s
  

  
  
  

• uniform refinements with exact boundary adaption
• visualization on level 6: 14,336 cells, 14,817 vertices, 72,640 d.o.f.`s
• computational mesh on level 7: 57,344 cells, 58,305 vertices, 288,640 d.o.f.`s
• nonconforming nonparametric rotated bilinear fem's (meanvalue version), UPW

• equidistant time stepping for computation with k=0.01111112
• equidistant time stepping for visualization with k=0.10 (= 1 frame)
• Total time T=30 corresponds to 3,000 time steps
• fractional step theta scheme

• date: 07/22/97
• simulation by: S.Turek
• visualization by: S.Turek
• IBM RS6000/590: 49 MB, 39,665 seconds
• AVS data: 732 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!