CFD Online Logo CFD Online URL
Home > Forums > FLUENT

Combustion Instability in Gas Turbine Combustors

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

LinkBack Thread Tools Display Modes
Old   March 6, 2008, 11:50
Default Combustion Instability in Gas Turbine Combustors
Posts: n/a
Hi, Mates,

In terms of combustion instability resulting from the coupling of heat release with pressure oscillation, how to define the inlet and outlet boundary conditions? To my knowledge, the compressible effect should be taken into consideration, is it?

Any one could show me some experimental data regarding, in particular, the case of liquid fuel?

  Reply With Quote

Old   March 6, 2008, 21:51
Default Re: Combustion Instability in Gas Turbine Combusto
Posts: n/a

You are right. Compressibility effects need to be taken into account to study combustion instability. You can find vast literature on the topic of combustion instability in AIAA papers, Journal of propulsion and power etc. The "Theoretical and Numerical Combustion" by Poinsot and Veynante has an excellent chapter on Combustion instability.

  Reply With Quote

Old   March 7, 2008, 04:19
Default Re: Combustion Instability in Gas Turbine Combusto
Posts: n/a
Thanks a lot, NRD. But, LES is adopted by nearly all the cases with respect to C.I. discussed in that book mentioned by you. As far as URANS is concerned, defining suitable boundary condtions is a headache for me, considering both the compressibility effects and wave motion at the inlet and outlet.

Any suggestion about that?
  Reply With Quote

Old   March 9, 2008, 09:43
Default Re: Combustion Instability in Gas Turbine Combusto
Posts: n/a
yes read more and more hehheheh
  Reply With Quote

Old   March 16, 2008, 07:39
Default Re: Combustion
Posts: n/a
How i can do the simulation withote combustion of non premexide combustion with FLUENT for confirm that the melonge is rechese

comment je peut faire la simulation de sans melange sans combustion dans FLUENT
  Reply With Quote


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
Constant velocity of the material Sas CFX 15 July 13, 2010 08:56
Gas turbine Combustion modelling.. achinta OpenFOAM 0 June 15, 2010 09:25
mass flow in is not equal to mass flow out saii CFX 2 September 18, 2009 08:07
OpenFoam for Gas Turbine Combustion Radek Main CFD Forum 1 August 13, 2006 08:24
Gas Turbine Combustion Q Main CFD Forum 13 August 12, 2006 15:45

All times are GMT -4. The time now is 07:44.