Computational Details:

"`Flying Particles' at low Reynolds number"

• diameter of square: 2
• total number of particles: 10
• diameter of particles : 0.15 - 0.4
• (maximum) speed of the particles : 0.1 - 0.5
• Dirichlet b.c.'s on propeller surface (= differentiation of the particle speed)
• natural b.c.'s at walls of the square
• initial condition at t=0: starting from rest
• viscosity parameter: 1/nu=10

• coarse mesh (=level 1): 1 square !!!
• equidistantly refined tensor product mesh of the square EVERYWHERE and for ALL TIME STEPS !!!
• computation and visualization on level 8: 16,384 cells, 16,641 vertices, 82,432 d.o.f.`s
• nonconforming nonparametric rotated bilinear fem's (meanvalue version), UPW

• equidistant time stepping for computation with k=0.0033334
• equidistant time stepping for visualization with k= 0.04 (= 1 frame)
• Total time T=10 seconds corresponds to 3,000 time steps
• fractional step theta scheme

• date: 04/19/98
• simulation by: S.Turek
• visualization by: S.Turek
• SUN ULTRA 45/250: 13 MB, 146,179 seconds
• AVS data: 600 MB
• Software: FEATFLOW1.1 + CC2D_MOVBC

• 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!