Droplet break-up criterion in Fluent

[subra284]

Hi!

I am trying to simulate the break-up of droplets in a microfluidic domain using Fluent, and could not get droplets to break. I was wondering if there is an option in Fluent to determine the break-up criterion, i.e. an option that says something like, "if the diameter of the droplet getting squeezed through a constriction falls below a threshold diameter, you should break it off."

Please let me know. If you can suggest any alternative strategies, that'd be great, too.

Thanks,

Abhishek

[Rob]

If you're using DPM then don't and read how it works. If you're looking at VOF, droplet break off will be a function of flow, but as surface tension forces dominate and you'll have very small cells it's a nontrivial application to model.