UDF - PDF for turbulent reaction calculations

ronen · July 10, 2013, 05:17

Hi all,
I would like to simulate turbulent reactive mixing using probability
density functions (e.g., betta distribution).
Unfortunately, it is not clear from the Fluent manual how to do so.
It would be great if you have already overcome this problem and you are willing to share a UDF example of direct me how to do so.
Thank you very much!!!

Ananthakrishnan · July 10, 2013, 08:09

Hi,
I do not have much expertise in this subject but I was of the impressiont that Fluent already provides us the option of Beta and gamma function for the pdf!!! Because i am using such a pdf for my non premixed combustion..I would be really happy to know if my understanding is wrong..

http://www.sharcnet.ca/Software/Flue...th/node218.htm

Bye,

ronen · July 10, 2013, 09:08

Yep, but from some reason the implementation in Fluent V14 is not straightforward

Ananthakrishnan · July 10, 2013, 11:12

I am still confused about your reply..but i have another idea to help you..if by any chance you have a customer account number/ID then you can contact the customer support of ansys..they have a separate division dedicated for UDFs..they are obliged to help you out..May be you can try there!!!

cheers,

ronen · July 10, 2013, 11:25

Yep, but the problem is academic bureaucracy. I can't bypass the academic software supporters

The non-premixed combustion model is close in its concept to what I would like to do. Are you familiar with it?

Ananthakrishnan · July 10, 2013, 11:31

I am familiar to a certain extent which is the knowledge of existing model within Fluent( because I am not writing my own model

)..

July 10, 2013, 05:17	UDF - PDF for turbulent reaction calculations	#1
ronen New Member ronen Join Date: Apr 2011 Posts: 7 Rep Power: 15	Hi all, I would like to simulate turbulent reactive mixing using probability density functions (e.g., betta distribution). Unfortunately, it is not clear from the Fluent manual how to do so. It would be great if you have already overcome this problem and you are willing to share a UDF example of direct me how to do so. Thank you very much!!!

July 10, 2013, 08:09		#2
Ananthakrishnan Senior Member Ananthakrishnan.A.S Join Date: Feb 2012 Location: Mumbai (Bombay), India Posts: 157 Rep Power: 16	Hi, I do not have much expertise in this subject but I was of the impressiont that Fluent already provides us the option of Beta and gamma function for the pdf!!! Because i am using such a pdf for my non premixed combustion..I would be really happy to know if my understanding is wrong.. http://www.sharcnet.ca/Software/Flue...th/node218.htm Bye, ronen likes this.

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July 10, 2013, 09:08		#3
ronen New Member ronen Join Date: Apr 2011 Posts: 7 Rep Power: 15	Yep, but from some reason the implementation in Fluent V14 is not straightforward

July 10, 2013, 11:12		#4
Ananthakrishnan Senior Member Ananthakrishnan.A.S Join Date: Feb 2012 Location: Mumbai (Bombay), India Posts: 157 Rep Power: 16	I am still confused about your reply..but i have another idea to help you..if by any chance you have a customer account number/ID then you can contact the customer support of ansys..they have a separate division dedicated for UDFs..they are obliged to help you out..May be you can try there!!! cheers,

July 10, 2013, 11:25		#5
ronen New Member ronen Join Date: Apr 2011 Posts: 7 Rep Power: 15	Yep, but the problem is academic bureaucracy. I can't bypass the academic software supporters The non-premixed combustion model is close in its concept to what I would like to do. Are you familiar with it?

July 10, 2013, 11:31		#6
Ananthakrishnan Senior Member Ananthakrishnan.A.S Join Date: Feb 2012 Location: Mumbai (Bombay), India Posts: 157 Rep Power: 16	I am familiar to a certain extent which is the knowledge of existing model within Fluent( because I am not writing my own model )..