Hello everyone;
I m trying to model the mixing of two miscible liquids inside a circular tank by using Ansys-fluent and i m confused which model of multiphase flow i have to use to model such case (VOF-Mixture or Eulerian).
Best regards and thanks.
If there is phase change like condensation or boiling then i suggest to use VOF model.
Thanks
Thanks for your responses, but i think the VOF model is used for non miscible fluids, isn't it?
I think that the "species transport model" is the most suitable for your simulations, it's more suitable for the mixing of miscible fluids but you must be careful because you need to disable the reaction process.
For the colleagues who recommended the VOF model, I inform them that it is suitable for multiphase flows where fluids are immiscible, and for the others like mixture and Eulerian models the problem arises that you can't introduce the diffusivity coefficient particularly to validate with previous work.
Good luck.
In this case, you have a multispecies model instead of a multiphase. Therefore, you should use species transport, not VOF or even Eulerian. After activation of this step in the model section in fluent, you can add your species in the boundary condition section (mixture part) and select your properties like the density of mixture or diffusion coefficients. It should be noted that, when you are adding the species in the mixture part, species with higher value should place at the end of the list. For more information, you can see my articles in this field (two miscible fluids).
Article Fluid micro-mixing in a passive microchannel: Comparison of ...
Article Mass transfer in a novel passive micro-mixer: Flow tortuosity effects
- Badges
- Science topic