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

gas-liquid stratified flow (two phase)

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

Reply
 
LinkBack Thread Tools Display Modes
Old   November 5, 2006, 05:44
Default gas-liquid stratified flow (two phase)
  #1
farshad pargar
Guest
 
Posts: n/a
Is it possible to simulate a gas-liquid(air-water) stratified flow (two phase flow) in a rectangular channel with fluent? has any one simulated this model ? please help me ...
  Reply With Quote

Old   November 5, 2006, 08:33
Default Re: gas-liquid stratified flow (two phase)
  #2
Nonut
Guest
 
Posts: n/a
It would be better to ask ANSYS to provide you with CFX.

  Reply With Quote

Old   November 6, 2006, 02:41
Default Re: gas-liquid stratified flow (two phase)
  #3
ravindra
Guest
 
Posts: n/a
hi what do u want actually to simulate? get it clear i think stratified flow can be simulated using fluent. there is one tutorial in fluent regarding boiling using VOF method. u just once refer that, then i think u will get some idea. but i think it will be some what difficult if any phase change is there.

  Reply With Quote

Old   November 6, 2006, 06:42
Default Re: gas-liquid stratified flow (two phase)
  #4
farshad pargar
Guest
 
Posts: n/a
hello i made a rectangular channel , and water with 0.8 kg/s goes from down and air with 1.2 m/s goes from top of water in the channel . i want know that this model is possible or not? i modeled befor , but result is not desire . thank u
  Reply With Quote

Old   November 6, 2006, 22:11
Default Re: gas-liquid stratified flow (two phase)
  #5
ravindra
Guest
 
Posts: n/a
hi, is there any interaction of fluids in the domain, i,e phase change. do u want to calculate the volume fraction of fluid? if interaction is there in your domain, u should write udf for the heat source. then it will be possible

  Reply With Quote

Old   November 7, 2006, 11:11
Default Re: gas-liquid stratified flow (two phase)
  #6
Rizwan
Guest
 
Posts: n/a
yes fluent absolutely solves your problem and it is quite easy provided you hav modeled such that gas and liquid enters from separate inlets. gas from upper inlet (face if 3d or edge in 2d) and water from bottom. if you are intersted in steady state claculation go for implicit vof, else geometric reconnstruct is advisable

Sincere Regards Rizwan
  Reply With Quote

Old   July 22, 2009, 14:46
Default
  #7
New Member
 
Michael Bruckner
Join Date: Apr 2009
Location: France
Posts: 27
Rep Power: 7
michaelb is on a distinguished road
Hi Rizwan

could you tell me the way you have specified your boundary conditions? This seems to be a big issue. I get the velocity profile right, but my channel is only full of the second phase except close to the inlet where I can see some very tiny volume fractions of the primary phase.
Do you have any idea of what is wrong? Thanks in advance for the help you could provide.

Cheers,
Mike
michaelb is offline   Reply With Quote

Reply

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
gas flow out of a C-D channel ljp FLUENT 0 March 7, 2011 14:32
Stratified Two Phase Flow ravi1650 FLUENT 1 May 29, 2009 05:13
Multiphase flow problem icedou FLUENT 6 July 10, 2005 02:52
More Probs - Gas-Solid 2 Phase flow Paresh Jain CFX 4 March 27, 2004 17:10
Gas Liquid flow in a packed column Rakib FLUENT 8 June 18, 2002 01:58


All times are GMT -4. The time now is 09:02.