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-   -   How interFoam tell which phase is wetting or non-wetting ? (https://www.cfd-online.com/Forums/openfoam-pre-processing/142957-how-interfoam-tell-phase-wetting-non-wetting.html)

red.yxg October 13, 2014 05:22

How interFoam tell which phase is wetting or non-wetting ?
 
Dear all:

Maybe a stupid question.

In interFoam for a given geometry, when we set a case, we give two fluid properties and surface tension in transportProperties, but how interFoam know which fluid is wetting phase and which one is non-wetting phase? When I put surface tension as negative value, time step becomes much shorter and it runs quite slow.


Thanks.

red.yxg October 13, 2014 06:03

I found it .It is the contact angle that determine which is wetting or non-wetting.


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