# Bubble Dynamics & VOF

 Register Blogs Members List Search Today's Posts Mark Forums Read

 May 13, 2006, 16:46 Bubble Dynamics & VOF #1 pranav22 Guest   Posts: n/a Sponsored Links Hi fluent experts, Is it possible to incorparate bubble dynamics behavior using VOF model? I am trying with the venturi model & introducing spherical bubbles at inlet.please share your suggestions to me. Any help would be very much appreciated. regards, Pranav

 May 13, 2006, 17:50 Re: Bubble Dynamics & VOF #2 mIn Guest   Posts: n/a yes, dynamics of bubble motion can be captured using the VOF model. What is this venturi model?

 May 14, 2006, 10:15 Re: Bubble Dynamics & VOF #3 pranav22 Guest   Posts: n/a Hi mln, My computational domain is venturi. I am injecting a spherical air bubble at the inlet of geometry. Primary Phase of my analysis is water.The main aim of this study is to predict the variation in temperature of the bubble while travelling in different cross section of venturi. Is it possible to enable Energy Eqn and make secondary phase is compressible?. If so, where can i get the variable property of air with respect to pressure & temperature? Any help is highly appreciated Pranav

 May 14, 2006, 10:30 Re: Bubble Dynamics & VOF #4 Pete Guest   Posts: n/a You can define a mixture phase and use species transport. I think Fluent will allow for at least one compressible phase. Check the manual.

 May 15, 2006, 03:34 Re: Bubble Dynamics & VOF #5 mateus Guest   Posts: n/a Hi! I think that what you try to do is wery interesting but also very hard. There was a paper of cfd simulation including thermal effects at the CAV2003 conference (just write cav2003 in google - you´ll find a link to the papers there). But there they used a different approach of modelling - the barotropic cavitation model. You´ll probably also not get far with vof and bubble dynamics (reyleigh plesset equation) because you´d need a very dense mesh for that - cell size 1/10 of the bubble size...that´s approximatelly 10^-5m (or even less in the beginning and end stage of bubble evolution). I hope I helped a bit... If you have any questions about cavitation modeling i am heppy to help, just write me an email - i did a lot of work in this area (but none considering thermal effects. By mateus

 Thread Tools Display Modes Linear Mode

 Posting Rules You may not post new threads You may not post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is On HTML code is OffTrackbacks are On Pingbacks are On Refbacks are On Forum Rules

 Similar Threads Thread Thread Starter Forum Replies Last Post voingiappone OpenFOAM 14 June 26, 2012 20:13 Lincoln Main CFD Forum 3 April 10, 2012 10:04 xujjun CFX 9 June 9, 2009 07:59 Vamsi Main CFD Forum 0 December 22, 2005 01:02 Gautam FLUENT 0 July 12, 2005 12:42