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

I can not achieve ignition in combustion chamber.

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   June 6, 2011, 06:38
Default I can not achieve ignition in combustion chamber.
  #1
New Member
 
Hector Diaz
Join Date: May 2011
Posts: 17
Rep Power: 15
hectordiaz is on a distinguished road
Hello,

I am working on modeling a 2D combustion chamber which receives 5 inlets with 10 species. Among them the fuel is CH4. My problem now is that I can not start an ignition. I could summarize my problem as follows:

  • Combustion chamber: 5 inlets of species (bottom), 5 inlets for pure air (sides), 1 outlet.
  • Model: Species transport. 10 Species defined. Volumetric reactions and Eddy Dissipation Concept.
  • Boundary conditions: I have defined the 5 inlets with the 10 species in the quantities required by the problem (those quantities are already given from another mathematical model) and the air inlets and the outflow.
Basically those are the most important parts. I have attached the case file if you want to check.

I tried using the 'patch' with a temperature of 2000K after a few iterations, but it does not work (but I am pretty sure that it worked for me a week ago, so I do not know what to think now). Now is definitely not working.

I am using a steady simulation. The mesh is pretty coarse now but it works the same way with the good one. I just want to achieve a good modeling before starting with a fine mesh.

Any suggestions?

Thanks in advance,

Best.

Héctor.

PS: Attached .cas file.
hectordiaz is offline   Reply With Quote

Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
I need design planes of combustion chamber HITACHI GE AdidaKK Main CFD Forum 0 July 2, 2009 15:04
[GAMBIT] Combustion Chamber with Quadrilateral Elements amita ANSYS Meshing & Geometry 0 May 6, 2009 00:14
Coal particles in combustion chamber Luis Filipe Fabiani CFX 2 March 10, 2009 16:37
Hydrogen Air combustion in a combustion chamber popi CFX 7 July 11, 2007 19:40
Constant Volume Chamber - Combustion and Ignition KOchzg FLUENT 0 March 30, 2005 11:19


All times are GMT -4. The time now is 06:49.