Hello all,
I am trying to generate a body force driven flow. Consider a simple pipe , radius 0.2 m , length 2 m. Lets assume there is a uniform volumetric body force of ( the momentum source term F) 100 N/m^3 on the fluid in the tube (water) in the axial direction. I set that through laminar flow (spf) -> volume forces and set only the axial component of the force = 100 N/m^3.
Now, the question is what should be the inlet and outlet boundary condition? My objective is to compute the steady state velocity developed due to the body force. So I don't know the inlet or outlet velocity at the boundary. I can set 0 pressure boundary at the outlet, but what about the inlet? I tried symmetry, laminar inflow with zero pressure and inlet with zero pressure. But the solution does not converge. Am I missing something simple? This should be one of the easiest simulations. The model file is attached
Any help is greatly appreciated.
Thanks ,
Souvik
I am trying to generate a body force driven flow. Consider a simple pipe , radius 0.2 m , length 2 m. Lets assume there is a uniform volumetric body force of ( the momentum source term F) 100 N/m^3 on the fluid in the tube (water) in the axial direction. I set that through laminar flow (spf) -> volume forces and set only the axial component of the force = 100 N/m^3.
Now, the question is what should be the inlet and outlet boundary condition? My objective is to compute the steady state velocity developed due to the body force. So I don't know the inlet or outlet velocity at the boundary. I can set 0 pressure boundary at the outlet, but what about the inlet? I tried symmetry, laminar inflow with zero pressure and inlet with zero pressure. But the solution does not converge. Am I missing something simple? This should be one of the easiest simulations. The model file is attached
Any help is greatly appreciated.
Thanks ,
Souvik