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

Problems with the unsteady flamelet Model

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   January 13, 2010, 06:42
Default Problems with the unsteady flamelet Model
  #1
Member
 
Join Date: Nov 2009
Posts: 34
Rep Power: 17
Christoph_84 is on a distinguished road
Hello everybody,
I am try to simulate a natural gas flame using the unsteady flamelet model. On the steady flamelet model it works fine. The first model I made works with the unsteady flamelet model. Then I draw a new grid an set up a case based on the first one (same flamelet, PDF, boundary conditions, turbulence model…). There I can’t choose the unsteady flamelet model.
The flow field is conjugated, the solver stands on steady.
Any Ideas?
Christoph_84 is offline   Reply With Quote

Old   January 13, 2010, 09:20
Default Probleam solved!
  #2
Member
 
Join Date: Nov 2009
Posts: 34
Rep Power: 17
Christoph_84 is on a distinguished road
I had to import the chemkin file again!
Christoph_84 is offline   Reply With Quote

Old   April 24, 2015, 17:20
Default
  #3
Member
 
sanjeet Limbu
Join Date: Mar 2015
Posts: 91
Rep Power: 11
sanjeetlimbu is on a distinguished road
Hi
After getting the steady flamelet I am not able to initialize unstaedy flamelet for partially...premixed.. it shows the mixture fraction error. I am trying to ignite the nheptane/N2/Ar/O2: 0.562/58/30/10.3 , by mole fraction
I am getting only the steady flamelet

Please help me how to reduce or set the mixture so to avoid this error.
I am trying by putting the scaler to all possible values between 1 to 0 the error is not disappearing

I am in bit great need ... Pl help
Attached Images
File Type: jpg steady flamelet not working.jpg (52.5 KB, 12 views)
File Type: png boundary values.PNG (39.8 KB, 5 views)

Last edited by sanjeetlimbu; April 24, 2015 at 19:55.
sanjeetlimbu is offline   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
non-linear k-epsilon model implementation problems Saidi Main CFD Forum 2 March 4, 2010 14:23
unsteady flamelet models dean Main CFD Forum 2 October 5, 2005 20:22
Unsteady Flamelet modelling Les Denpre Main CFD Forum 0 August 8, 2005 10:46
Model problems FP Mie FLUENT 0 February 25, 2001 10:17
k-omega model and unsteady transition Jens Thurso Main CFD Forum 1 May 4, 1999 10:50


All times are GMT -4. The time now is 18:55.