I have a problem with the convergency of a case
 

Hello, I´m Raul Martin, I´m spanish aeronautical ingeneer student. I´m doing a air intake like end carreer proyect and I not be able to do my problem converge so I need help. I already have descended the Courant Number until 0,1 but I´m continued the same problem. Do somebody know what I can in this situation?Please I need a solution hurry up. Thank you

Re: I have a problem with the convergency of a cas
 

Do you have anymore info about your problem???

Ben

Re: I have a problem with the convergency of a cas
 

Yes, I think I already have said my viscous model, it´s Spallart-Allmaras. The geometry is a nozzle convergence-divergence finished it in a plenum. Plenum is like a air box very very big. The mesh have 458011 Cells,1056835 Faces, 186066 Nodes. Discretization to flow and to modified turbulent viscosity are second order upwind. My under-relaxation factors are 0,8 to modified turbulent viscosity, 1 to turbulent viscosity and 1 solid. My fluid is ideal gas (air)and it´s a case in 3 dimensions with one pressure inlet and pressure outlet. If you need something more say me. Thank you Ben.

Re: I have a problem with the convergency of a cas
 

y dont you reduce the under relaxation parameter and try it for that