Hi, i made a model of a liquid sphere and an outer big domain in gambit, but what boundary types do i have to specify for the sphere?? as its a liquid drop , i cannot specify it as a wall. so what should i do??

Hi

If you do not specify the boundary as anything, then it will automatically be classified as a default interior by fluent. This will mean that heat will transfer across the boundary anyway.

Andy

Hi!

I don't really understand your problem. You have a liquid sphere (drop) in some other fluid (like air).

I think in this case you should use the VOF multyphase model. In this case you specify the liquid droplet position dirrectly in Fluent...

Best regards

MATEUS

Hi. Yes, my problem is a liquid drop is in a free stream of air, and i dont know how to make this drop in fluent with VOF multiphase model. i tried this but it did not make any liquid drop. help in this regard will be appreciated. thank you

Hi!

I currently don't have accsess to fluent or to fluent documentation to tell you directlly. I think you should go trough tutorial for VOF which is in fluent documentation. Bassically you define a certain region (for example a box from x=0 to x=1, y=0 to y=1 and z=0 to z=1)in fluent and then set is as water. Everithing else in your domain is considered as air...I hope this helps - but i'm shure you'll understand what I mean when you go torough tutorial..

Good luck

MATEUS