|
[Sponsors] |
Solution Method & turbulent intensity in CFX 5.5.1 |
|
LinkBack | Thread Tools | Search this Thread | Display Modes |
August 14, 2002, 20:39 |
Solution Method & turbulent intensity in CFX 5.5.1
|
#1 |
Guest
Posts: n/a
|
hi
I want to know what type of Alogrithem solution method used in CFX5.5.1 is it SIMPLE method? and what does the defult number of turbulent intensity use in the CFX 5.5.1? thank you |
|
August 26, 2002, 15:46 |
Re: Solution Method & turbulent intensity in CFX 5
|
#2 |
Guest
Posts: n/a
|
No, it's not SIMPLE. CFX-5 is a pressure based coupled flow solver, i.e., solves for u,v,w and p at the same time. There have been threads on this in the past, just search the archives.
The default turbulence levels are given in the manual. 3.7% intensity I think Neale |
|
August 27, 2002, 17:05 |
Re: Solution Method & turbulent intensity in CFX 5
|
#3 |
Guest
Posts: n/a
|
Greetings to all, The previous answer is not certain 100%. Due to the explained thing previously they can be the schemes (SIMPLE,SIMPLER, SIMPLEC, PISO) But with certain details. I hope that another people us of a good answer to near of solution scheme. Best regards, Jhonny
|
|
August 28, 2002, 11:09 |
Re: Solution Method & turbulent intensity in CFX 5
|
#4 |
Guest
Posts: n/a
|
SIMPLE and its variants, as well as PISO are all segregated approaches. CFX-5 does not draw on these approaches at all and that *is* 100% certain. In fact, there is no option to use a segregated approach. I mentioned that the approach in CFX-5 has been discussed before in the CFX Forum:
http://www.cfd-online.com/Forum/cfx_...e.cgi?read=934 Neale |
|
August 28, 2002, 13:12 |
Re: Solution Method & turbulent intensity in CFX 5
|
#5 |
Guest
Posts: n/a
|
Hi,I follow without understanding the algorithm of solution???? Please search: www.gre.ac.uk/~physica/phy2.11/theory/sode11.htm see Momentum-pressure coupling. Best regards.
|
|
August 28, 2002, 13:16 |
Re: Solution Method & turbulent intensity in CFX 5
|
#6 |
Guest
Posts: n/a
|
excuse me the web is wwww.gre.ac.uk/~physica/phy2.11/theory/node1.htm
|
|
August 30, 2002, 17:28 |
Re: Solution Method & turbulent intensity in CFX 5
|
#7 |
Guest
Posts: n/a
|
Hi Jhonny,
As Neale pointed out, CFX-5 uses a coupled approach, not segregated. The SIMPLE and SIMPLEC algorithms are a means to account for pressure-velocity coupling between segregated equations. SIMPLEC is an extension to SIMPLE developed at ASC (now part of CFX). For more on this see: Van Doormaal, J.P.; Raithby, G.D.,"Enhancements of the SIMPLE Method for Predicting Incompressible Fluid Flows", Numerical Heat Transfer, Vol. 7, pp. 147-163, 1984. This approach was later dropped in favor of solving for the coupled mass-momentum equations simultanously using a coupled algebraic multigrid approach. For a paper describing the approach, see the following pubished by ASC in 1988: Hutchinson, B.R.; Galpin, P.F.; Raithby, G.D., "Application of Additive Correction Multigrid to the Coupled Fluid Flow Equations", Numerical Heat Transfer, Vol. 11, pp. 133-147, 1988. Regards, Robin |
|
June 29, 2011, 13:39 |
|
#8 | |
New Member
al mazdeh
Join Date: Mar 2009
Posts: 16
Rep Power: 17 |
Quote:
I don't seem to be able to find this article-do u have it?-thanks |
||
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
CFX Treatment of Laminar and Turbulent Flows | Jade M | CFX | 18 | September 15, 2022 08:08 |
fractional intensity and turbulent intensity in CFX | Nick R | CFX | 1 | April 6, 2013 12:23 |
Turbulent Schmidt Number in Ansys CFX 12.1 | DiddyPablo | CFX | 7 | May 23, 2011 12:20 |
k-epsilon: Defining turbulent intensity and length scale? | klausb | OpenFOAM | 0 | January 23, 2011 08:28 |
Could anybody help me see this error and give help | liugx212 | OpenFOAM Running, Solving & CFD | 3 | January 4, 2006 19:07 |