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

Ddes

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

Reply
 
LinkBack Thread Tools Display Modes
Old   March 26, 2009, 08:43
Default Ddes
  #1
New Member
 
Matteo Baldi
Join Date: Mar 2009
Location: Pistoia, Italy
Posts: 9
Rep Power: 7
Matteo85 is on a distinguished road
Hi,
as part of my M.Sc. Thesis I'm working on the implementation of DDES models, starting from their corresponding DES models.
As regards the modification that has to be introduced in the definition of the DES length scale of each model so as to perform DDES, I've found information in literature about the kOmegaSST model ("Ten years of industrial experience with the SST turbulence model", Menter, 2003) and the SpalartAllmaras model ("A new version of detached eddy simulation, resistant to ambiguous grid densities", Theor. Comp. Fluid Dyn., Spalart, 2006).
However in the latter, it is said that the form of the proposed modification

dTilda = d - fd*max(0,d - CDES*delta)

is not limited to the SpalartAllamaras model, but is applicable to other models, although some kind of adjustment might be required for fd.
I'd like to know if anyone has some information about the application of this formula to DES models other than SpalartAllamaras-based or kOmegaSST-based. In particular I'm interested in the adaptation to DDES form of the DES model based on Wolfshtein one equation model.

Thank you,
have a nice day!
Matteo85 is offline   Reply With Quote

Reply

Tags
ddes, detached, wolfshtein

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
LESDES deltas cfdmarkus OpenFOAM Running, Solving & CFD 33 April 12, 2009 05:42


All times are GMT -4. The time now is 09:47.