Reply To: Gas-liquid turbulent flows with LBM

[Aurelio H]

Hi Simon,

Since you are trying to set up a multiphase flow, setting pressure both at inlet and outlet will not be enough. You would also have to specify the state of the fluid, preferably at inlet.

If your simulation setup allows for it, maybe you could use periodic borders instead of an inlet/outlet and apply a constant pressure gradient through a body force. But this is only valid in a small number of cases, like the two-layer Poiseuille flow, or if you are considering gravity-driven flows.

Regards,

Aurelio