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Velocity as a function of height - Boundary condition.

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Old   August 21, 2018, 08:37
Default Velocity as a function of height - Boundary condition.
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Hi all,

I am modelling a flow through a wind tunnel and I need to set my inlet velocity as a function of height of the wind tunnel. (Velocity increases as height increases).

Is there any way to do it.


P.S: I am using Openfoam 4.0 and I think the groovyBC doesn't work.
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Old   August 21, 2018, 12:29
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There are a number of ways to do this. I believe that I've previously compiled swak4Foam for OF4. If you don't want to use groovy bc, then a fixedProfile boundary condition will work -- you can define a functional form or read velocities (as a function of height) from a csv. Information on how to do this can be found here : https://github.com/OpenFOAM/OpenFOAM...FvPatchField.H.

Caelan
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Old   August 22, 2018, 09:46
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Hi clapointe, Thanks for the info. I also found another way to do this. I got the cell location from writecellcentres command and then I calculated the velocity for each point and fed into the inlet as nonuniform list.

thanks once again for your quick reply.
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Old   March 25, 2019, 08:34
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Hello Senthilathiban,

Did you manually calculated the velocity and then manually add it in the 0.U file?

I am also having the same problem.
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Old   March 25, 2019, 11:01
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Quote:
Originally Posted by hmusaddiq View Post
Hello Senthilathiban,

Did you manually calculated the velocity and then manually add it in the 0.U file?

I am also having the same problem.
Yes I calculated manually. But later I found another boundary condition fixedProfile

More infor at https://www.youtube.com/watch?v=rfNYVqU1py4&t=
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