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Old   November 17, 2009, 05:21
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ata
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Hi Foamers
I have a problem. I have a vessel that it's wall is rotating but I don't know how I could imply rotating wall velocity in OpenFOAM. Can any one help me?
Thanks allot

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Old   November 25, 2009, 10:11
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Dear Ata,

I am not a coder, but do know of a boundary condition in src/finiteVolume/fields/fvPatchFields/derived/... known as "movingRotatingWallVelocity" which exists. I am not able to locate in my 1.5 version, but others are getting it to work.

Best, Lori
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Old   November 26, 2009, 01:05
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Hello lth
Thank you very much.

That's true. I see. It is in OpenFoam-dev not in OpenFoam standard.

Best regards


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Old   November 26, 2009, 03:47
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There is a rotatingWallVelocity boundary condition for in the standard OpenFOAM 1.6 and 1.6.x releases. Apply it like so:

wall
{
type rotatingWallVelocity;
origin (0 0 0); // origin of axis and the axis
axis (0 1 0); // about which the wall will rotate
omega 25; // m/s
}

For moving walls:

wall
{
type movingWall;
value uniform (1 0 0); // wall moving at 1m/s in x direction
}

Hope that helps.
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Old   November 26, 2009, 05:01
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Hello Adriano

Thank you very much.

I'll try it as soon as possible.

Best regards.


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Old   November 27, 2009, 06:03
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Hi Ata,

Ignore the boundary condition for movingWall as it doesn't work. Instead, just set it to fixedValue and provide the correct velocity vector.

Good luck!

Cheers,

adriano
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Old   November 27, 2009, 22:28
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Hi Adriano
Thank you very much
So what's rotatingWallVelocity boundary condition for?
Best regards


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