Computational Details:

"Channel flow for low Reynolds number (power law)"

• rectangular domain of height 1 and width 4
• pressure drop b.c.'s (left:10, right:0)
• other b.c.'s: zero velocity at fixed walls
• initial condition at t=0: starting from rest
• viscosity parameter: 1/nu=100
• nonlinear viscosity nu(u) = nu (10^-8+|D(u)|)**(-alpha), alpha=0, 0.5, 1 and alpha=-1

• "coarsest" mesh (=level 1): "4 unit squares"
• coarse mesh (=level 3): 64 cells, 148 vertices, 360 d.o.f.`s
• uniform refinements with exact boundary adaption
• visualization on level 7: 16,384 cells, 16,705 vertices, 82,560 d.o.f.`s
• computational mesh on level 8: 65,536 cells, 66,177 vertices, 328,960 d.o.f.`s
• nonconforming nonparametric rotated bilinear fem's (meanvalue version), UPW

• adaptive time stepping for computation
• time stepping for visualization: all k=0.01 (= 1 frame)
• Total time T=4 seconds
• fractional step theta scheme

• date: 12/19/97
• simulation by: S.Turek/J.Hron
• visualization by: S.Turek
• SUN ULTRAII/200MHZ: 66 MB, 39,484 seconds (for `alpha=0.5')
• AVS data: 530 MB (for `alpha=0.5')
• Software: FEATFLOW1.0 + BOUSS_POWERLAW

• 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!