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

Lifted flame simulation!!!

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

Reply
 
LinkBack Thread Tools Display Modes
Old   November 11, 2007, 12:07
Default Lifted flame simulation!!!
  #1
krishh
Guest
 
Posts: n/a
Hi i am trying to simulate non premixed confined turbulent propane lifted flames. I am using species transport model and in that laminar finite rate model for turbulent chemistry interactions. But the flame is not getting lifted upon increasing the velocity beyond 25m/s and the simulation lift off height is not matching with experimental lift off height. For 25m/s fuel velocity and pressure inlet condition for air,single step chemistry,k-e turbulent model: Experimental height =96mm Simulation lift off height=50mm. why this much discrepancy between experimental and simulation results. I tried with eddy dissipation model;laminar finite rate/k-e model;eddy dissipation model;EDC model. out of which i can achieve lift off of flame only when i am using laminar finite rate model or EDC model but EDC is over predicting the results. can u suggest me what i need to do to achieve correct lift off height(i.e my suggesting any particular model or the changes i need to make)

  Reply With Quote

Old   August 26, 2009, 05:17
Smile hi
  #2
New Member
 
siva kumar
Join Date: Jul 2009
Posts: 13
Rep Power: 8
shshiva17 is on a distinguished road
send ur experimental results and gepmetry,, i will say the correct solution,,,
moreover hav u considered any wall thickness???
my email id is :shshiva17@gmail.com
shshiva17 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
ReactingFoam Laminar flame simulation transport properties gbansal OpenFOAM Running, Solving & CFD 3 November 23, 2012 17:03
GUI crash and simulation engine still running RPJones FLOW-3D 2 November 9, 2010 09:18
velocity profile export from a simulation onto another sudhirlv STAR-CCM+ 1 September 12, 2010 18:57
combustion bomb simulation ... bart_weisser FLUENT 0 April 25, 2010 02:41
strange simulation error Ralf Schmidt FLUENT 2 May 4, 2007 13:02


All times are GMT -4. The time now is 10:23.