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-   -   Need help Buoyant BoussinesqSimpleFoam and Pressure inlet/outlet boundary conditions (http://www.cfd-online.com/Forums/openfoam-pre-processing/115910-need-help-buoyant-boussinesqsimplefoam-pressure-inlet-outlet-boundary-conditions.html)

RynoLaub April 9, 2013 07:00

Need help Buoyant BoussinesqSimpleFoam and Pressure inlet/outlet boundary conditions
 
Hi Guys

I am relatively new to Openfoam and is busy learning the software I have already done a few of my own problems with success. Currently I trying to do the tuts I've done on Ansys during my studies at university. One tut is giving me a few problems, it will be much appreciated if someone could help me.

The problem I am trying to simulate is 2D laminar flow around a heated vertical plate in air. The solver I am using is buoyantboussinesqsimplefoam and the RAS properties is set to laminar. The problem has the following boundaries:

inflow, outflow, Symmetry, plate and front_back where the front_back is type empty and Symmetry is type symmetryPlane. The inflow should be a pressure inlet at ambient temperature T_amb and the outlet should be a pressure inlet outlet (to compensate for backward (reverse) flow) at T_amb. My question is could someone tell me how the 0/p and 0/U boundaries should be setup.

RynoLaub April 10, 2013 08:16

Okay I figured it out, for the inlet and outlet conditions in 0/U I used pressureInletVelocity and for the inlet/out in 0/p used totalPressure and the sim looks like it works. I will post the actual files and sim results later.

Mojtaba.a September 7, 2013 16:42

Quote:

Originally Posted by RynoLaub (Post 419600)
Okay I figured it out, for the inlet and outlet conditions in 0/U I used pressureInletVelocity and for the inlet/out in 0/p used totalPressure and the sim looks like it works. I will post the actual files and sim results later.

Dear Ryno,
What values did you use for totalPressure boundary for p?

I am simulating natural convection in a pipe and I have some problems making the solution steady as it has to be.

I have set up U and p boundary conditions as you suggested, but I don't know about the values of totalPressure.

Do you have any suggestions?


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