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Old   December 11, 2016, 19:22
Default OpenFoam mapped boundary condition
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Hi,

I am doing an LES simulation in OpenFoam. To obtain the inlet boundary condition, I was planning to do a separate simulation for a periodic pipe and use the velocity profile of the periodic pipe as the inlet of my main simulation. However, I recently found out about this "mapped" inlet boundary condition in OpenFoam. I am wondering how it actually maps the velocity profile back to the inlet and also if it is as accurate as doing a periodic pipe simulation. Any comments would be appreciated.

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Old   December 12, 2016, 18:31
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Timofey Mukha
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Hi,
You can achieve good accuracy with such recycling methods. But make sure to make the distance between the inlet and the plane you map from large enough, so that you don't introduce extra periodicity.


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Old   December 27, 2016, 20:09
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Quote:
Originally Posted by tiam View Post
Hi,
You can achieve good accuracy with such recycling methods. But make sure to make the distance between the inlet and the plane you map from large enough, so that you don't introduce extra periodicity.


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Thanks for the reply.
How can I specify the plane from which I project? In the Pitzdaily mapped there are only the following options and none of them is related to the source plane.

inlet
{
type mapped;
value uniform (10 0 0);
interpolationScheme cell;
setAverage true;
average (10 0 0);
}
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Old   November 29, 2018, 04:53
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Jianrui Zeng
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I am also wandering this boundary ,have you resolved your problems with this boundary? Can you give me some hints?Thank you.
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Old   December 1, 2018, 18:19
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Fumiya Nozaki
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Settings on the source plane is described in the polyMesh/boundary file.
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inlet bc, large eddy simulation., mapped boundary condition, mapped condition, openfoam

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