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How to use movingWallVelocity the right way?

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Old   May 16, 2012, 11:40
Default How to use movingWallVelocity the right way?
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fisch
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Hi,

i have a question regarding the movingWallVelocity BC:

In my calculations i compare two different setups using the velocityLaplacian meshMotion solver:

A) Use the same dirichlet velocity BC at the moving wall as the velocity in my cellMotion U file (such that in my interpretation the relative velocity is zero).
B) Use the movingWallVelocity (0,0,0) BC and use the same cellMotion U velocity as in case A)

As i understand these pair of calculations should lead to the same result.
But as you can guess now they don't.

Do you have any suggestions?
thanks a lot
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Old   March 6, 2013, 11:33
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Teng Wu
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Quote:
Originally Posted by fisch View Post
Hi,

i have a question regarding the movingWallVelocity BC:

In my calculations i compare two different setups using the velocityLaplacian meshMotion solver:

A) Use the same dirichlet velocity BC at the moving wall as the velocity in my cellMotion U file (such that in my interpretation the relative velocity is zero).
B) Use the movingWallVelocity (0,0,0) BC and use the same cellMotion U velocity as in case A)

As i understand these pair of calculations should lead to the same result.
But as you can guess now they don't.

Do you have any suggestions?
thanks a lot
Dear fisch,

Recently I have the same confusion as you proposed. I'm wondering have you figured it out?

Thanks,
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