Computational Details:

"Channel flow with two bumps at high Reynolds number (nonsymmetric location)"

• nonstationary 2D channel flow through two opposite bumps
• channel domain of length 14 and height 1
• height of lower bump 0.35, and of upper bump 0.25
• 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=50,000

• coarse mesh (=level 1): 7 cells, 16 vertices, 51 d.o.f.`s
• shown mesh (=level 3): 112 cells, 145 vertices, 624 d.o.f.`s
  

  
  
  

• uniform refinements with exact boundary adaption
• visualization on level 7: 26,672 cells, 29,185 vertices, 142,384 d.o.f.`s
• computational mesh on level 9: 458,752 cells, 460,801 vertices, 2,297,856 d.o.f.`s
• nonconforming nonparametric rotated bilinear fem's (meanvalue version), UPW

• equidistant time stepping for computation with k=0.011111112
• equidistant time stepping for visualization with k=0.10 (= 1 frame)
• Total time T=30 corresponds to 2,700 time steps
• fractional step theta scheme

• date: 07/02/97
• simulation by: S.Turek
• visualization by: S.Turek
• IBM RS6000/590: 392 MB, 281,718 seconds
• AVS data: 1,440 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!