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-   -   solving algorithm in CFX (http://www.cfd-online.com/Forums/cfx/76571-solving-algorithm-cfx.html)

feizaghaee May 29, 2010 08:01

solving algorithm in CFX
 
does anybody know which algorithm cfx uses to solve a problem?(simple, simpelc, piso ...)
and how can i use QUICK scheme?

ghorrocks May 29, 2010 17:55

It is all explained in the documentation. It uses a coupled solver. It does not use the uncoupled methods you describe.

As for QUICK, you need to set that up with CEL.

feizaghaee May 30, 2010 02:45

thanks a lot my friend

cfdman May 31, 2010 01:36

Hello Glen,

Which solver algorithms, schemes available in CFX? Could you give some details about this?

Thanks

ghorrocks May 31, 2010 02:02

DOCUMENTATION. Read it. If you want more details followup the references in the doco.

Mina_Shahi January 13, 2012 12:49

1 Attachment(s)
Quote:

Originally Posted by ghorrocks (Post 260944)
DOCUMENTATION. Read it. If you want more details followup the references in the doco.

Hi Glenn

I am confused i read CFX theory manual but i didn't get the point and the references are too old and it is not available for me.
I also read your advise in other pages in this Froum, what i understood is that CFX doesn't use SIMPLE- SIMPLEC- SIMPLER or PISO- but it does pressure velocity coupling, it uses Rhie Chow for interpolating. Is it true???

i found this document when i was searching on the google Attachment 10838 if you go to page D-19 you can see that it is talking about SIMPLEC which made me even more confused, can you please take a look at this document and let me know what you think? :cool:

Thank you in advance

Far January 14, 2012 00:31

Quote:

it uses Rhie Chow for interpolating. Is it true???
Yes, It is true.

ghorrocks January 14, 2012 06:59

The document you found is using CFX4. This was the previous CFD code, and was superseded by CFX5. CFX5 is a coupled solver and does not use SIMPLE (or its variants). All versions of CFX after 5 use the coupled solver.

Mina_Shahi January 16, 2012 06:32

Quote:

Originally Posted by ghorrocks (Post 339288)
The document you found is using CFX4. This was the previous CFD code, and was superseded by CFX5. CFX5 is a coupled solver and does not use SIMPLE (or its variants). All versions of CFX after 5 use the coupled solver.

Thank you for replying me, because this document made me so confused,


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