PimpleDymFOAM simulation of Savonius rotor
 

Hi, I am right now working with simulation of 2 blade savonius rotor with a concentrated nozzle. I created the mesh in gmsh. I have validated the savonius rotor for both static and dynamic case. I have got a good result for the savonius rotor with concentrated nozzle for static case. But when I am running it for dynamic case then I am not getting any result. The simulation is running for a while and then after some moment it stops to work. I have played with changing transfinite points, expansion ratio, tolerance limit, relaxation factors. But no luck!! I am stuck at the same condition from last two weeks.
Let me give the boundary conditions of my simulation:

Inlet:Patch type( Zero Gradient)
Outlet: Patch type( Zero Gradient)
Top and bottom surface: Wall type( No slip condition)
Nozzle wall: Wall type( No slip condition)
Blade Wall: Wall type( No slip condition)
Turbulence Model: K-omega sst model
Does any body have any idea about it? It will be really great help if anybody could suggest me a way to figure out the problem.

Hi,couple of suggestions:
1) inlet and outlet zeroGradient doesn't sound right to me, what if you add a fixedValue to inlet?
2) can you show pictures of the mesh, possibly showing the stator and rotor regions?

hello Sunzida
may can you explain the detail problem with the capture or screen picture? may it will easier to solve your problem.