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-   -   Dirichlet boundary condition for subsonic inflow (https://www.cfd-online.com/Forums/main/184374-dirichlet-boundary-condition-subsonic-inflow.html)

Obad March 1, 2017 04:05

Dirichlet boundary condition for subsonic inflow
 
Hi guys,

I know that for subsonic inflow you would normally only impose two flow properties and let the third one be calculated. However, in my case I know the exact conditions of the flow at my inflow boundary condition.

So is it a valid approach to simply impose everything at the subsonic inflow with a Dirichlet BC?

Cheers!

FMDenaro March 1, 2017 04:14

Quote:

Originally Posted by Obad (Post 638975)
Hi guys,

I know that for subsonic inflow you would normally only impose two flow properties and let the third one be calculated. However, in my case I know the exact conditions of the flow at my inflow boundary condition.

So is it a valid approach to simply impose everything at the subsonic inflow with a Dirichlet BC?

Cheers!


No, you can't match the exact condition with the numerical solution. You need to let from the interior


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