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Poisson eqn in ALE formulation

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Old   June 9, 2006, 09:58
Default Poisson eqn in ALE formulation
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I would like to find out whether if the poisson eqn in a fractional step scheme changes when the NS eqn is cast in the ALE (arbitrary langrange eulerian) formulation. I have seached thru the forums and it seems that some ppl suggested changing the velocity at the RHS to the relative velocity ie flow velocity - mesh velocity.

However, some others only mention changing the convective velocity to a relative one in the momentum equation.

Can someone give me a clue? Thanks you
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