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diffusivity directional variables

Hi all, I have 2 questions, 1. How to implement partialSlip condition for a movingWall. I tried type partialSlip, value uniform (0 -0.66 0); since wall moving down with 0.66m/s valueFraction uniform 0.2; But I found no change in pressure values for different valueFractions between 0-1. 2.What does the variables (1 200 1) in diffusivity mean(used in dynamic mesh) velocityComponentLaplacianCoeffs { patches (movingWall atmosphere); component y; diffusivity directional (1 200 1); } Thank you.

OpenFOAM

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Hi Ashok, I am looking the solution for the previous query "change of volume inside pipe". will update soon. For this problem for first question, can you send the case directory and also the solver if you modified. Regards, Sathish

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