Computational Details:

Study of 'Stirr Tank Agitator'- Stirred Tank Agitators Exhibiting different Agitator Blades

• circular domain of diameter 14.5
• four heated circles of radius 1 and located at x1 =3.7123, y1 =3.7123, x2 =-3.7123, y2 =3.7123 ,x3= -3.7123 ,y3= -3.7123 ,x4= 3.7123 , y4=-3.7123
• inflow b.c.'s:natural boundary conditions.
• outflow b.c's:natural boundary conditions.
• Other b.c.'s:non zero velocity at a diamater of 5 units from the center.
• initial condition at t=0: starting from rest
• viscosity parameter: 1/nu=1,00,000

• coarse mesh (=level 1): 172 cells, 200 vertices, 924 d.o.f.`s
  

  
  
  

• uniform refinements with exact boundary adaption
• visualization on level 4: 11,008 cells, 11,260 vertices, 55,552 d.o.f.`s
• computational mesh on level 4: 11,008 cells, 11,260 vertices, 55,552 d.o.f.`s
• nonconforming nonparametric rotated bilinear fem's (meanvalue version), UPW

• equidistant time stepping for computation with k=0.01
• equidistant time stepping for visualization with k=0.25 (= 1 frame)
• Total time T=30 corresponds to 3,000 time steps
• fractional step theta scheme

• date: 03/12/2004
• simulation by: Pai Pratap
• visualization by: Pai Pratap
• SUN ULTRA1/140: 9.47 MB, 1347.02 seconds
• GMV data: 191.8 MB
• Software: FEATFLOW1.2 + 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!