CFD Online Logo CFD Online URL
Home > Forums > FLUENT

How to set the parameters for the Boussinesq Model in the fluent

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

LinkBack Thread Tools Display Modes
Old   August 28, 2012, 22:35
Wink How to set the parameters for the Boussinesq Model in the fluent
New Member
Join Date: Aug 2012
Posts: 19
Rep Power: 5
fangdian is on a distinguished road
I want to simulate the welding pool(which comes from the molten steel for the heating of welding arc to the melting steel plate) in the arc welding, taking the natural-convection flows in the welding pool.
I use the VOF and solidfication & melting model in my case and I want to consider the buoyancy with the Boussinesq model in the fluent as follws:

In my case, there are two phase which are the ideal air(primary phase) and the steel(second phase). I have set the solidus temperature as 1773K and the liquidus temperature as 1793K. The density of the steel and ideal air are 7860kg/m3 and 1.225kg/m3. The thermal expansion coefficient of steel is 1e-4.
With respect to my case, how to set the parameters for the Boussinesq model? I can set the density of the flow with the density of primary phase, that is to say,the density of the ideal air 1.225kg/m3. But how can i set the is the operating temperature, the solidus temperature or the liquidus temperature of the steel plate(the second phase) in the expression above?
Attached Images
File Type: jpg boussinesq model.jpg (6.4 KB, 110 views)

Last edited by fangdian; August 28, 2012 at 22:37. Reason: format of the text
fangdian is offline   Reply With Quote


boussinesqsimple, operating density

Thread Tools
Display Modes

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 On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Superlinear speedup in OpenFOAM 13 msrinath80 OpenFOAM Running, Solving & CFD 18 March 3, 2015 06:36
Evaporation model in ansys Fluent 12.1 oldisbest Fluent UDF and Scheme Programming 9 June 13, 2013 22:44
Can FLUENT model flashing liquids? SWK FLUENT 4 December 13, 2005 22:55
Reynolds Stress Model in Fluent Vs CFX Tim FLUENT 0 December 6, 2005 23:03
How to set turbulence parameters at periodic BC? Ray FLUENT 2 July 28, 2000 04:15

All times are GMT -4. The time now is 18:50.