Droplet evaporation
 

Hello everyone, I recently started using Fluent and I would like to try to reproduce the evaporation of a drop of n-heptane as done in this video but in the absence of gravity:
https://www.youtube.com/watch?v=GnHcWOjLf9E

It's a 2D model and I used ANSYS Fluent 2023 R1 (2d, axi, dp, pbns,eulerian, spe, lam, transient).
I used the implicit multi-fluid VOF and set phase 1 to be a mixture of air/n-heptane-vapor while phase two is liquid n-heptane. Heat transfer: ranz-marshall. Mass transfer: evaporation-condensation. I set an initial droplet temperature of 300 K while the walls and internal domain at 873 K.
Attachment 97522

At the beginning I have a situation like the image but, when it evaporates, I find something like this (the drop moves and also the diameter doesn't decrease uniformly).
Attachment 97523


Could anyone give me some advice?

Thank you very much :)

Hello, just wondering if you have figured this out? I am trying to run a similar simulation.