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Mai March 16, 2006 12:45

Ignition and combustion

I have to model the propagation of a flame in a tube with StarCD. However I don't know how to create an ignition and the reaction of combustion between the air and Butane (Calor gas) with StarCD.

Could you help me, please ?

Wendy March 21, 2006 05:02

Re: Ignition and combustion

For modelling the ignition mechanism inside STAR-CD, you have to select some ignition cells to be defined as spark plug. The, you have to apply it as different cell table & colour (if possible). Then key-in the starting of ignition process to the end of ignition in the forms of time steps or crank angles. The the combustion will occured automatically once you have set-up your chemical reaction properly.

Actually, you can refer to STAR-CD User Guide and Tutorial to do that. This is from me at this time. Thank you.



Mai April 5, 2006 09:31

Re: Ignition and combustion

Thank you a lot for your response. I have made what you told me in StarCD but I can't find where the option spark plug is and I don't understand why there isn't any Air in my tube whereas I have set up my chemical rection properly. I can't see a varition of temperature since the combustion doesn't occur.

Could you help me once again, please?

Best regards,


Ralphie April 5, 2006 09:38

Re: Ignition and combustion
Which combustion model do you use?

Mai April 5, 2006 10:04

Re: Ignition and combustion
I use a model of combustion with premixed gaz ( In fact, I'd like to make butane C4H10 and O2 react with StarCD)

Ralphie April 5, 2006 10:23

Re: Ignition and combustion
There are a few options for premixed combustion. which one do you use?

Mai April 12, 2006 08:31

Re: Ignition and combustion
I have chosen a CHKI rate model of combustion, with the option Standard and a local source but I can't enter Ignition parameters, do you know why, please ?

Mai May 10, 2006 09:59


I would like to model the propagation of a flame in a tube with Star CD. I have enter the reaction of combustion of C4H10 properly but I can't have a result. In fact, there isn't any variation of parameters concerning O2 and the other elements.

Could you help me please ?

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