CFD Online Logo CFD Online URL
Home > Forums > General Forums > Main CFD Forum

Turbulence Model and Accuracy of convective flux calculation

Register Blogs Members List Search Today's Posts Mark Forums Read

LinkBack Thread Tools Display Modes
Old   November 14, 1998, 16:56
Default Turbulence Model and Accuracy of convective flux calculation
Lokesh Agrawal
Posts: n/a

We are using pseudo-compressibiliy method for solving heat trasnfer problem. We are using SST (Menter 1994) turbulence model and the code is giving convergence and good results for mixed convection in a driven cavity. However, the code is not converging for Natural convection problem (Ra = 10^11)(The results for Laminar cases are excellent in aggreement). At present we are doubting the convective flux calculations (at present central differencing with fourth order dissipation is used). We would like to know whether we are thinking in the right direction or not. Also if someone can suggest some better way of handling the whole affair.

Thanx Lokesh
  Reply With Quote

Old   November 15, 1998, 00:24
Default Re: Turbulence Model and Accuracy of convective flux calculation
wei zhang
Posts: n/a
Hi, I had some experience about Pseudo-Compressibiliy method, when I worked at Japan(6 years ago). I felt that the result of P-C method is very depended on the Pseudo-Compressibiliy corfficient( usual call BATE).Please try to change the value of BATE, you may get a good result. wei zhang
  Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Use of k-epsilon and k-omega Models Jade M Main CFD Forum 30 February 17, 2018 12:53
Wrong calculation of nut in the kOmegaSST turbulence model FelixL OpenFOAM Bugs 27 March 27, 2012 09:02
Fluent 12 k-w SST turbulence model DarrenC FLUENT 0 December 13, 2009 09:33
v2f Turbulence Model (and others?) Travis FLUENT 4 January 7, 2009 02:18
turbulence model for vortex flows GŁnther Hasse Main CFD Forum 16 October 24, 1999 12:08

All times are GMT -4. The time now is 04:34.