CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > General Forums > Main CFD Forum

Basic Multiphase Flow Modelling

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   August 27, 2004, 00:27
Default Basic Multiphase Flow Modelling
  #1
krishna
Guest
 
Posts: n/a
Hi all,

Can ppl suggest me some basic books on Multiphase flow modelling to start with, I am in need to develop a code for a bubbly flow, across a channel.

Thanks in advance,

krishna.
  Reply With Quote

Old   August 27, 2004, 01:39
Default Re: Basic Multiphase Flow Modelling
  #2
Junseok Kim
Guest
 
Posts: n/a
You may search for Level set method, Volume of fluid method, front tracking method.

  Reply With Quote

Old   August 27, 2004, 09:40
Default Re: Basic Multiphase Flow Modelling
  #3
John
Guest
 
Posts: n/a
The term "Multiphase flow" is always dubious. If the phases are kind of mixed (like having too many small air bubbles in turbulent flow in chemical process devices), I call them "dispersed multiphase" flows. In these cases VOF, Level Set, etc. methods don't work and you should simulate them using two-fluid methodologies like the works of Drew and Lahey at RPI (Rensslaer) or works of Kataoka (Int J. Multiphase Flow) as they just model the effects of these small bubbles using some simple correlations as it's impossible to SOLVE for all the details of flow.

Level set method, Volume of fluid method, front tracking method are only useful if you can track the two fluids separately like a water drop in air or a bubble inside liquid which I call "immiscible multiphase" flows (not too many bubbles as it's virtually impossible to track all these guys). e.g. the maximum of bubbles that are solved using these methods are less than 1000 large bubbles (works of G. Tryggvason), and also very recent simulation of Japanese guys using the world's largest supercomputer (EarthSimulator).

Maybe other people have differnt ideas about the names, but I believe there are two totally different catregories of the multiphase flows from the computational point of view at least.
  Reply With Quote

Reply


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 Off
Trackbacks are Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
multiphase flow, aeration Ellie CFX 3 January 15, 2009 18:33
Multiphase flow information amir FLUENT 2 May 25, 2007 07:01
multiphase flow, CFX or FLUENT? luis Main CFD Forum 6 October 5, 2006 14:24
multiphase flow Shane Gillis FLUENT 10 August 28, 2000 20:12
Troubles modelling flow through a grid Hans Klaufus CFX 1 June 28, 2000 17:43


All times are GMT -4. The time now is 16:40.