Liquid Holdup Calculations/solving as part of OpenFOAM
 

Hello All,

Performed interFoam based multiphase flow two sets of calculations.
Set.1: The liquid is flowing from the top to bottom in packing
Set.2: Liquid is flowing from top to bottom and simultaneously Gas is flowing from bottom to top (Counter-Current flow modeling).

Now, I have post-process data from which I want to calculate the liquid holdup in both sets, how to do that? How to do that in paraview or is there any 'functions-libs' that I can use to do these calculations and extract the values?
Also, extract the data of film thickness of the liquid, how to do that?
please let me know!

I did able to set up pressure drop as 'function-lib'.

anyone? I really need it!