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Old   December 24, 2006, 18:49
Default PDF combustion modeling
  #1
Jim Clancy
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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
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Old   December 26, 2006, 06:16
Default Re: PDF combustion modeling
  #2
ejaz
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because combustion is being done at low mach numbers. snobs
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Old   December 26, 2006, 12:19
Default Re: PDF combustion modeling
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Jim Clancy
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preconditioning enables compressible codes to deal with not only low mach numbers but also very low Mach number.
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Old   December 27, 2006, 14:57
Default Re: PDF combustion modeling
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sam
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what is meant by preconditioning and how this is done.???

regards sam
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Old   December 27, 2006, 21:10
Default Re: PDF combustion modeling
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Jim Clancy
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Sam, Have a look at this link to know what is preconditioning: http://www.math.tau.ac.il/~turkel/precon.html Regards Jim
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Old   December 29, 2006, 16:30
Default Re: PDF combustion modeling
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Donald
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your density does not vary with mixture fraction in your pdf model!?
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Old   December 29, 2006, 21:23
Default Re: PDF combustion modeling
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Jim Clancy
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Donald, let us consider beta-PDF model, of course density is function of mixture fraction
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Old   January 10, 2007, 04:46
Default Re: PDF combustion modeling
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srini
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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
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Old   January 10, 2007, 04:47
Default Re: PDF combustion modeling
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srini
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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
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Old   March 6, 2010, 21:56
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  #10
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李逾
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yubaibai88 is on a distinguished road
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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