how to set initial scalar dissipation

zkzkzk010537 · August 21, 2013, 04:37

can some one tell me how to set initial scalar dissipation in non-premixed combustion, steady flamelet. How could i know what is the value of my scalar dissipation? may i read it from previous non-premixed combustion calculation? and if not, how to calculate?And what is the proper value for maximum number of flamelet and scalar dissipation step?
Thank you veryvery much!!!!!!!!!!!

tariq · September 8, 2018, 11:52

Have you got the answer? I am facing the same issue. I hope you've already solved it as already 5 years gone since you asked the question !

Ramon Quiñonez · March 10, 2021, 10:47

I know that this is an old post. But I cant find any straightforward way of calculating the scalar dissipation rate. I am using propane/air for non-premixed combustion. Even though I have the stoichiometric mixture fraction, I cant find a way to use it to get X. There are some papers and explanations online but its a bit hard to understand.

I would appreciate any help!

thanks

August 21, 2013, 04:37	how to set initial scalar dissipation	#1
zkzkzk010537 Member kai Join Date: Jul 2013 Posts: 54 Rep Power: 12	can some one tell me how to set initial scalar dissipation in non-premixed combustion, steady flamelet. How could i know what is the value of my scalar dissipation? may i read it from previous non-premixed combustion calculation? and if not, how to calculate?And what is the proper value for maximum number of flamelet and scalar dissipation step? Thank you veryvery much!!!!!!!!!!!

September 8, 2018, 11:52		#2
tariq New Member tariq Join Date: Jun 2013 Location: Barcelona Posts: 14 Rep Power: 12	Have you got the answer? I am facing the same issue. I hope you've already solved it as already 5 years gone since you asked the question ! __________________ https://tariqridwan.github.io/

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March 10, 2021, 10:47		#3
Ramon Quiñonez New Member José Ramón Quiñonez Arce Join Date: Oct 2017 Location: Leeds, UK Posts: 17 Rep Power: 8	I know that this is an old post. But I cant find any straightforward way of calculating the scalar dissipation rate. I am using propane/air for non-premixed combustion. Even though I have the stoichiometric mixture fraction, I cant find a way to use it to get X. There are some papers and explanations online but its a bit hard to understand. I would appreciate any help! thanks