CFD Online Logo CFD Online URL
Home > Forums > FLUENT

Flamelet Parameters

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

LinkBack Thread Tools Display Modes
Old   January 23, 2012, 06:34
Default Flamelet Parameters
New Member
Andre Novgorodcev
Join Date: Jan 2012
Posts: 3
Rep Power: 8
andre9 is on a distinguished road
I'm starting to make reactive simulations using Steady Flamelet models. My objective is to simulate a hydrogen flame in air in a tipical bluff-body configuration. I'm using the Burke 2011 kinetic model (8 species + inerts and 19 reactions).

There is any golden rule to determine the following parameters to calculate the flamelet and generate the pdf table?
  • Number of Grid Points in Flamelet
  • Maximum Number of Flamelets

  • Number of Mean Mixture Fraction Points

  • Number of Mixture Fraction Variance Points

andre9 is offline   Reply With Quote

Old   May 20, 2012, 06:28
New Member
Fariborz Soroush
Join Date: Oct 2009
Location: Tehran, Iran
Posts: 14
Rep Power: 10
faudiS8 is on a distinguished road
hi every body
is there anyone here to answer the question?
It's mine too!
Also I want to know if there's any optimum under-relaxations?
My model convergence has many fluctuations.
faudiS8 is offline   Reply With Quote

Old   November 19, 2012, 17:23
New Member
Join Date: May 2012
Posts: 14
Rep Power: 7
kingpots is on a distinguished road
Hi all ,
As far as i know there isn't any golden rule , however you can validate your results by looking to the Flamelet shape, species , scalar dissipation and mixture fractions .
I am always using the automated refinement with 8 to 40 points /20 flamelets and it gives good results . Check also the time vs . residuels while creating flamletes ,if it is smooth then you are good to go , if on the other hand it takes long time , try to redude the fourrier no. to 1 .
kingpots is offline   Reply With Quote


flamelet, flamelet table

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
Problems with the unsteady flamelet Model Christoph_84 FLUENT 2 April 24, 2015 16:20
Flamelet gives faster chemistry than ED-model champshof FLUENT 0 November 30, 2011 11:01
units of geometrical parameters lost SoobY ANSYS Meshing & Geometry 2 January 10, 2011 04:58
Error with the unsteady flamelet Model Christoph_84 FLUENT 0 February 25, 2010 12:06
New to CFX-need explanations about mesh parameters Cyril CFX 3 November 24, 2006 07:33

All times are GMT -4. The time now is 23:59.