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Boundary Conditions for Internal compressible Flow

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Old   October 3, 2013, 07:22
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anshul bansal
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hi xisto
can u send your boundary condition file?
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Old   October 3, 2013, 07:46
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Carlos Xisto
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Check the previous posts, I think that I have put my 0 folder there..

Carlos
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Old   October 7, 2013, 09:10
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anshul bansal
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hi xisto
thnk for your reply

actually i am doing my work on c-d nozzle flow.
i take axisymmetry geometry of this.
actually i confuse about its boundary condition , here i attach my boundary file.... you just look into these and if found any problem please address me.
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File Type: gz 0.tar.gz (971 Bytes, 28 views)
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Old   February 12, 2015, 14:20
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Matei Petrescu
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Quote:
Originally Posted by vwibaut View Post
Hi all

I would like to simulate a supersonic nozzle with and without shock. So I have the same boundary conditions of Xisto except for the pressure at the outlet. I use waveTransmissive to avoid the reflection of the wave.
Is it ok?

Other question: When I use waveTransmissive I have to choose a "linf". But how do I choose the value?

Have you found the answer to your questions? I want to do something similar and I am not getting a steady flow yet.
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Old   February 12, 2015, 14:43
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Matei Petrescu
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Hi Carlos,

I would like to see your thermophysicalProperties file from constant folder the simulation that worked for you in the past (rhoPisoFoam laminar case on a duct with a bump). I will try it along with your boundary conditions with sonicFoam solver available in OpenFoam 2.1.1 (version that I use -> this version no longer contains rhoPisoFoam solver). I would love to be able to test this in a nozzle geometry. My goal is to set up a pressure gradients across it and check the velocity profile.

Best,
Matei.
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Old   August 20, 2015, 12:45
Default transonic BCs
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ufocfd
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Carlos, thanks very much for the BCs
------


Quote:
Originally Posted by xisto View Post
These one are for the transonic case (works in the subsonic also).

For the supersonic you need to specify all variables at inlet (fixed values for temperature (static), pressure (static) and velocity). Extrapolate all variables from outlet (zero gradient).
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Old   May 17, 2016, 02:30
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majid
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hi all
I want to simulate an internal supersonic flow with OF,but I have no idea fo my boundary condition,any one can help me?
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