CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > ANSYS > FLUENT

Mixture model with one compressible fluid phase

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   September 26, 2006, 10:11
Default Mixture model with one compressible fluid phase
  #1
oden
Guest
 
Posts: n/a
Hello,

I try to inject a compressible gas into a vessel filled with a hot liquid at high density. The inlet conditions of the gas are pressure = 4.5 bar, temperature = 229 K and density = 9 kg/m3. The inlet Mach number is about 0.95. The gas expands (jetting) and forms a bubble column, the bubbles finally rise and induce the motion of the liquid phase.

It was suggested by FLUENT to use the mixture model (gas: primary phase and ideal-gas law; liquid: secondary phase). Other settings are SKE model, Standard wall functions, initially low relaxation factors (pressure, momentum and volume fraction 0.2 - 0.3)and first-order upwind discretisation. The time step size is 10-5, but in any case, the solution does not converge. Smaller time step sizes show the same behaviour.

Has anybody experience with similar flow conditions?

Thank´s a lot for your response,

Juergen
  Reply With Quote

Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Mixture model priyanka.asp FLUENT 5 April 16, 2020 03:18
mass flow in is not equal to mass flow out saii CFX 12 March 19, 2018 06:21
Two phase model? pathway FLUENT 0 September 16, 2009 00:41
MULTIPHASE - FREE SURFACE & MIXTURE MODEL Aris FLUENT 3 April 28, 2009 12:46
How to apply negtive pressure to outlet bioman66 CFX 5 June 3, 2006 02:40


All times are GMT -4. The time now is 23:58.