CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > General Forums > Main CFD Forum

Convert Euler code to full N-S

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   June 23, 2002, 17:01
Default Convert Euler code to full N-S
  #1
Soren
Guest
 
Posts: n/a
Hi

Simpel question:

What are needed in terms of code midification when I want to convert a Euler code to simulate incompressible N-S with k-eps turbulence model ?

Thanks in advance.

Regards

Soren
  Reply With Quote

Old   June 24, 2002, 03:46
Default Re: Convert Euler code to full N-S
  #2
Rami
Guest
 
Posts: n/a
Dear Soren,

The question is indeed simple - the answer is not...

o You have to include the viscous terms in the transport equations;

o You should add the k-e transport equations (after deciding if you need the high- or low- Re model, and exactly which variant of the k-e family);

o You should allow for BC treatment including viscosity (e.g., no slip at walls) and appropriate BC for k-e (either by corresponding wall functions or direct approach resolving the viscous sublayer);

o You should choose an appropriate algorithm to allow for the incompressibility constraint (e.g., SIMPLE-like or artificial comressibility);

o You should adapt or modify altogether the discretization and numerical solution algorithm to allow stable and accurate solution to the full N-S equations system;

o and more... (e.g., treatment of additional inputs, additional output, further submodels, like the viscosity variaton with temperature).

I assume that if you do such a conversion, there will be little resemblance between the final and the original codes.
  Reply With Quote

Old   June 24, 2002, 03:49
Default Re: Convert Euler code to full N-S
  #3
Rajani Kumar Akula
Guest
 
Posts: n/a
just add the additional terms explicitly.
  Reply With Quote

Old   June 25, 2002, 05:47
Default Re: Convert Euler code to full N-S
  #4
Li Yang
Guest
 
Posts: n/a
Hi Soren,

I think it would be a very big job for you to implement all these. I suggest that you should get such a code from an expert in CFD or have a check the book from Ferziger and Peric.

Regards

Li
  Reply With Quote

Reply


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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
The FOAM Documentation Project - SHUT-DOWN holger_marschall OpenFOAM 242 March 7, 2013 13:30
Euler 2d code structured odianes Main CFD Forum 0 October 28, 2005 18:54
Design Integration with CFD? John C. Chien Main CFD Forum 19 May 17, 2001 16:56
What is the Better Way to Do CFD? John C. Chien Main CFD Forum 54 April 23, 2001 09:10


All times are GMT -4. The time now is 02:44.