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specifying boundary types in gambit??

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Old   May 12, 2003, 09:04
Default specifying boundary types in gambit??
  #1
gayazullah
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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??
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Old   May 13, 2003, 04:25
Default Re: specifying boundary types in gambit??
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McGregor
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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
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Old   May 13, 2003, 11:19
Default Re: specifying boundary types in gambit??
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mateus
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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
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Old   May 14, 2003, 14:23
Default Re: specifying boundary types in gambit??
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gayaz
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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
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Old   May 15, 2003, 11:57
Default Re: specifying boundary types in gambit??
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mateus
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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
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