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-   -   How to model a heat source for ignition of flame (http://www.cfd-online.com/Forums/fluent/126508-how-model-heat-source-ignition-flame.html)

harshad88 November 19, 2013 13:36

How to model a heat source for ignition of flame
 
Hello,

I am simulating a partially premixed flame in fluent with premixed CH4+air mixture and pure-air as coflow. The experiment does not have a pilot for flame ignition hence I am trying to simulate a heat source that can act as an ignition source for the flame.

Can anybody let me know how I can do this? Would really appreciate your help.

Thanks :)

smhosseini November 20, 2013 03:44

Hi Harshad,
Your reaction is the ignition source. In Fluent, you should define the reaction, turn the energy on and determine the reaction enthalpy.

harshad88 November 20, 2013 21:14

Hi smhosseini,

Thanks a lot for your reply.

I do define my boundary conditions and the appropriate reactions. The flame is not igniting. Actually in the experiments the flame would ignite only with the help of an igniter/propane torch kept on the base of the burner. To model the propane torch I was thinking of having a heat source in the mesh.

How can i model a heat source in the mesh?

smhosseini November 21, 2013 02:18

Did you read Fluent user guide -> Modeling Partially Premixed Combustion?


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