CFD Online Logo CFD Online URL
Home > Forums > FLUENT

DES in fluent 6.1.18??????????????

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

LinkBack Thread Tools Display Modes
Old   March 11, 2008, 10:33
Default DES in fluent 6.1.18??????????????
Posts: n/a
Sponsored Links
Hi evry body, How to introduce DES with Fluent 6.1.18? I have activat Spalart-Allmaras but I don't find turbulence- expert in the panel of viscous models (like it is say in the user guide)!!!


  Reply With Quote
Sponsored Links

Old   March 26, 2008, 09:53
Default Re: DES in fluent 6.1.18??????????????
Fábio Saltara
Posts: n/a
Dear naus,

You won't find this option in the menus. In Fluent 6.1.22 You have to choose 3d unsteady simulation, the spalart-allmaras model and then you must write in the prompt line:


The program will ask you an answer (yes/no?).

Answer yes and detached eddy simulation will be selected. But I don't know if this trick is going to work in 6.1.18.

In case it works, there is a detail that is unknown to many users: in this version of fluent, when DES is selected the program applies the boundary conditions for turbulence fluctuations that are the default for LES, and are pretty high. So, you have a very high level of noise in the simulation. Before selecting the spalart-allmaras model is advisable to select LES and change the inlet boundary conditions for the tubulence fluctuations. Only then you should select spalart-allmaras and activate DES from the prompt line.



  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
Fluent in Linux vs. Fluent in Windows Melih FLUENT 6 November 16, 2014 10:39
Fluent/Unix vs. Fluent/Windows sjjaber FLUENT 10 January 5, 2005 17:58
Running FLUENT 6.0 sims. on FLUENT 6.1 ozgur FLUENT 2 April 2, 2004 13:23

Sponsored Links

All times are GMT -4. The time now is 03:18.