Pressure defination in subsonic flowfield
I calculate a subsonic flowfield with two inlets and one outlet. I use the Inlet BC at two inlets and Pressure BC at the outlet. The resulted flow field has a corrected pressure value at the outlet but not at the inlet. But in the subsonic flowfield, the pressure at the outlet should not have influence to the whole flowfield.
If I use the Outlet BC at the outlet, and Inlet BC at two inlets, the calculation divergence. What is the reason for that? Thanks! |
Re: Pressure defination in subsonic flowfield
Is your simulation transient or steady-state?
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Re: Pressure defination in subsonic flowfield
For subsonic flows (M<1) flow disturbance may extend upstream, so it may influence to the whole flowfield. For supersonic flows (M>1) flow disturbance may extend upstream only in boundary layer (where M<1).
Maybe you have strong reverse flows at the outlet, that isn`t correct... |
Re: Pressure defination in subsonic flowfield
I have a steady-state simulation.
Thanks! |
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