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-   -   How to use movingWallVelocity the right way? (http://www.cfd-online.com/Forums/openfoam-solving/101893-how-use-movingwallvelocity-right-way.html)

fisch May 16, 2012 11:40

How to use movingWallVelocity the right way?
 
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

TengWU March 6, 2013 12:33

Quote:

Originally Posted by fisch (Post 361460)
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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