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Hello Everyone,

Can anyone tell me what condition can we used as an interface detection criteria in multiphase Euler-Euler simulation (with Modified-HRIC scheme).

My case is gas-liquid mass transfer in cylindrical bubble column:

Dimension- (D, H)= (150, 460)

Bath depth (filled with water)=250mm
Free board filled with air=210mm


At the free surface there are diffused cells. For example, in cells above 250mm, volume fraction of liquid is detected due to diffuse characteristic of Euler-Euler model, although, I have used sharp/diffuse interface capturing scheme.

So I guess volume fraction can not be used as a criteria to detect the interface.

Can anyone guide me with this? any reference will be appreciated

Regards
Krishna