PDF combustion modeling

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 December 24, 2006, 18:49 PDF combustion modeling #1 Jim Clancy Guest   Posts: n/a Hi folks, why the PDF combustion modeling is limited to incompressible flow only? Is it possible to extend this approach to compressible flows? Thanks Jim

 December 26, 2006, 06:16 Re: PDF combustion modeling #2 ejaz Guest   Posts: n/a because combustion is being done at low mach numbers. snobs

 December 26, 2006, 12:19 Re: PDF combustion modeling #3 Jim Clancy Guest   Posts: n/a preconditioning enables compressible codes to deal with not only low mach numbers but also very low Mach number.

 December 27, 2006, 14:57 Re: PDF combustion modeling #4 sam Guest   Posts: n/a what is meant by preconditioning and how this is done.??? regards sam

 December 27, 2006, 21:10 Re: PDF combustion modeling #5 Jim Clancy Guest   Posts: n/a Sam, Have a look at this link to know what is preconditioning: http://www.math.tau.ac.il/~turkel/precon.html Regards Jim

 December 29, 2006, 16:30 Re: PDF combustion modeling #6 Donald Guest   Posts: n/a your density does not vary with mixture fraction in your pdf model!?

 December 29, 2006, 21:23 Re: PDF combustion modeling #7 Jim Clancy Guest   Posts: n/a Donald, let us consider beta-PDF model, of course density is function of mixture fraction

 January 10, 2007, 04:46 Re: PDF combustion modeling #8 srini Guest   Posts: n/a this may be a silly question, but when we are modeling using pdf combustion, i was been told that if we opt for the compressibility effects, after creating pdf table, we can treat that flow as compressible. am i in wrong notion?? can u help me out srini

 January 10, 2007, 04:47 Re: PDF combustion modeling #9 srini Guest   Posts: n/a this may be a silly question, but when we are modeling using pdf combustion, i was been told that if we opt for the compressibility effects, after creating pdf table, we can treat that flow as compressible. am i in wrong notion??, my mach numbers at the in the total combustion zone vary upto 0.34 can u help me out srini

 March 6, 2010, 21:56 #10 Member   李逾 Join Date: Mar 2010 Posts: 65 Rep Power: 8 hello: I'm new in fluent,recentlly I got a work to complete a combustion simulation with fluent,but I do not have enough references and books to teach me how to finish it. could you pleasd sent some initial toturials to me.thank you very much! my E-mail:yubaibai88@163.com

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