CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > OpenFOAM Running, Solving & CFD

Lien cubic low Re model

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

Reply
 
LinkBack Thread Tools Display Modes
Old   August 22, 2007, 11:05
Default Hi users: Can anyone here
  #1
Member
 
Ning Yang
Join Date: Mar 2009
Location: University Park, PA, USA
Posts: 85
Rep Power: 8
nzy102 is on a distinguished road
Hi users:

Can anyone here tell me the source paper of lien cubic low Re model in openfoam? Is it two-equation model or three-equation model in the foam? By that, I mean if the transport equation for the second invariant of the Reynolds Stress A2 (aijaij) is solved?

I found three papers as follows:

Craft, T.J., Launder, B.E., Suga, K., 1996. Development and application of a cubic eddy-viscosity model of turbulence. International Journal of Heat and Fluid Flow 17, 108-115.
Craft, T.J., Launder, B.E., Suga, K., 1997. Prediction of turbulent transitional phenomena with a nonlinear eddy-viscosity model. International Journal of Heat and Fluid Flow 18, 15-28.
Chen, W.L., Lien, F.S., Leschziner, M.A., 1998. Non-linear eddy-viscosity modeling of transitional boundary layers pertinent to turbomachine aerodyanamics. International Journal of Heat and Fluid Flow 19, 297-306.

The source code seems different from these papers. Thanks a lot.

Ning
nzy102 is offline   Reply With Quote

Old   July 28, 2011, 22:13
Default Cubic Lein model
  #2
New Member
 
Pellegrini Marco
Join Date: Jul 2011
Location: Tokyo
Posts: 1
Rep Power: 0
pmarco is on a distinguished road
Hi Ning,

I saw your message kind of 2 years later therefore you might have solved your problem already. Nevertheless I would like to answer to you for somebody else taking a look to your question.

I don't know about OpenFoam but in Star-CCM+ the references is:
1) Lien, F.S., Chen, W.L., and Leschziner, M.A. 1996. “Low-Reynolds number eddy-viscosity modelling based on non-linear stress-strain/vorticity relations”, Proc. 3rd Symp. on Eng. Turbulence Modelling and Measurements, 27-29 May, Crete, Greece.


It is a quite difficult paper to find though.


You might refer also to:
Lien, Leschziner, (1995), ASME Paper 95-CTP-80.



Nevertheless in addition, the Lien model is a two equation model, just you mean the second (quadratic) and third (cubic) order terms are introduced or not in the turbulent viscosity definition. The Lien model contains both quadratic and cubic terms, but you can easily neglect them, setting the coefficients to zero in case you don't really need them, to solve simple geometries as for straight fully developed pipes or channel for example.



Hope this helps,
Marco.
pmarco is offline   Reply With Quote

Reply

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
cubic/ lid driven cavity Adrian Main CFD Forum 0 October 24, 2008 18:41
simple cubic nihar FLUENT 0 February 11, 2008 14:35
Cubic k-e model of turbulence abdellah Main CFD Forum 0 March 2, 2005 06:47
3D cubic object in flow Brandon Main CFD Forum 2 October 25, 2004 11:07
Flow around a cubic obstacle - LES or DNS Neyval C. Reis Main CFD Forum 2 November 2, 1999 11:30


All times are GMT -4. The time now is 20:32.