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-   -   BC for pressure inlet (http://www.cfd-online.com/Forums/openfoam-solving/60128-bc-pressure-inlet.html)

newbee July 5, 2006 03:20

Hi, I've got a channel with
 
Hi,

I've got a channel with a fixed velocity inlet and fixed pressure at outlet.

What BC is correct to choose for pressure at the inlet if I dont know the actual pressure value? It is set to zeroGradient by default but it doesnt seem physicaly correct. While runing my case I get "time step continuity errors" which i guess is caused by this.

Thanks
/Erik

anja July 5, 2006 05:21

Hi, okay for so far. The ne
 
Hi,

okay for so far. The next error message after starting the time loop is:
--> FOAM FATAL IO ERROR : file "inlet.dat" does not exist

Where does the inlet.dat have to be?
I've tried it in "case/0/", in "/derivedFvPatchFields/timeVaryingUniformFixedValue" and in "/solvers/icoFoam".

Can someone please help me?
Thanks
Anja


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