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

because combustion is being done at low mach numbers. snobs

preconditioning enables compressible codes to deal with not only low mach numbers but also very low Mach number.

what is meant by preconditioning and how this is done.???

regards sam

Sam, Have a look at this link to know what is preconditioning: http://www.math.tau.ac.il/~turkel/precon.html Regards Jim

your density does not vary with mixture fraction in your pdf model!?

Donald, let us consider beta-PDF model, of course density is function of mixture fraction

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

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

[yubaibai88]

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

[laylay]

I need to do supersonic combustion in scramjet for my thesis. I am using Ansys fluent but i cant do nothing. I need some help about every steps in solution page