[Manukamin_iisc]

Hello all,

I am currently carrying out compressible LES simulation of duct flows, with explicit time marching.

I need to add synethetic turbulence at the duct inflow to have a turbulent flow field within my domain. I know that there is a good amount of literature available out there that explains various methods to generate isotropic turbulence that can be added as velocity fluctuations to the required mean velocity at the inlet.

However, I am imposing a "pressure inlet" boundary condition, which means that I cannot now specify my inlet velocity. If I did so, the problem would become ill-posed. So I do not know how to add turbulent fluctuations now, given that I cannot specify my inlet velocity, but rather allow the velocity to develop for the given inlet and outlet pressure values.

I wasn't able to find any literature on this. Could anyone let me know how to get around this problem?

Cheers!