Computational Details:

"Flow over a Forward Facing Step at low Reynolds number"

• nonstationary 2D channel flow over a "forward facing step"
• channel width: before/after step/total: 3/10/13
• channel height: before/after step: 1/0.5
• 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=5,000

• coarse mesh (=level 1): 11 cells, 22 vertices, 75 d.o.f.`s
  

  
  
  

• uniform refinements with exact boundary adaption
• visualization on level 6: 11,264 cells, 11,585 vertices, 56,960 d.o.f.`s
• computational mesh on level 7: 45,056 cells, 45,697 vertices, 227,201 d.o.f.`s
• nonconforming nonparametric rotated bilinear fem's (meanvalue version), UPW

• equidistant time stepping for computation with k=0.03333334
• equidistant time stepping for visualization with k=0.20 (= 1 frame)
• Total time T=30 corresponds to 900 time steps
• fractional step theta scheme

• date: 07/09/97
• simulation by: S.Turek/I.Otasevic
• visualization by: S.Turek/I.Otasevic
• SGI PowerIndigo2/R10: 37 MB, 17,699 seconds
• AVS data: 300 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!