Multiphase flows can be numerically calculated using either Euler- Lagrange approach or Euler-Euler approach. VOF is a type of Euler-Euler approach, it is basically a surface tracking technique. Usually used if there are more than two immersible fluids, where interface position is of importance.

It has only one set of momentum equations, shared by all fluids and volume fraction of each of the fluid in each computational cell is tracked.

Hope this helps you.

Regards !

Multiphase flows can be numerically calculated using either Euler- Lagrange approach or Euler-Euler approach. VOF is a type of Euler-Euler approach, it is basically a surface tracking technique. Usually used if there are more than two immersible fluids, where interface position is of importance.

It has only one set of momentum equations, shared by all fluids and volume fraction of each of the fluid in each computational cell is tracked.

Hope this helps you.

Regards !

Also the VOF method utilizes a single energy equation for the entire system. Very useful to simulate interface resolved physical problems such as droplet and bubble hydrodynamics. Heat and mass transfer phenomena in drops and bubbles can also be simulated.

As already discuss about the vof model summary so i dont want to go in more depth i thing this details are available in the books as well as fluent guide so i just like to suggest you to use this model and this tutorial will guide you when you do so.

Good luck

VOF model will be more useful if the study is focused on interface tracking. Otherwise mixing study can be modelled using mixture model of Fluent.

 I heard that there is there is a Eulerian-VOF multiphase model these days from Ansys Fluent ?is that correct ? Thanks.  

yes there is - now if I only understood if it would be appropriate for my situation