I am using ANSYS FLUENT to model a two-phase flow of liquid and gas using the Eulerian model where the surface tension force is included.
In the theory of the VOF model, the surface tension force is added to the momentum equation as a source term.
However, in the Eulerian model, we have two momentum equations, one for the liquid and one for the gas. How is the surface tension force included? is it added to the liquid momentum equation?is it added to the gas momentum equation? is it split between the two phases?
If it is split, is it split by two volume averaged factors or two mass averaged factors?
Unfortunately, the theory manual does not mention related information under the Eulerian model theory.
I think you will find some relevant literature here.
https://www.sciencedirect.com/search?qs=ANSYS%20FLUENT%20model%20the%20surface%20tension%20in%20the%20Eulerian&show=25&sortBy=relevance
Md. Washim Akram Thank you for your response. Be sure that I posted this question when I realized that finding the answer could not be achieved by pasting the related words in search engines! None of the literature in the given link mentions related information, unfortunately.
Dear Mohamed M Hussein
I have also same question. Did you find any realized answers.
Pls share it.
Thanks
I got the answer to that question. The surface tension force is weighted by the volume fraction and split between the momentum equations of phases.
For example, if I have two phases, L and G, and the surface tension force is F. The term (alpha_L *F) is added to the phase L momentum equation, and the term (alpha_G *F) is added to the phase G momentum equation.
Take a look at the following link. A perfect clip for your Q.
https://www.youtube.com/watch?v=MXxe2KhY2q0
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