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

Blog Entries

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

Old

Accelerating CFD Solutions (Fluent)

Posted May 18, 2013 at 14:38 by Far

Here you can find the difference between different techniques and how they help you to achieve faster convergence.

http://www.ansys.com/staticassets/AN...-Solutions.pdf
Far
Super Moderator
Posted in Uncategorized
Views 1133 Comments 1 Far is online now Edit Tags
Old

bash script for noob and OpenFoam

Posted May 13, 2013 at 23:13 by gregjunqua

Hi there I am a noob in linux and i like efficient tutorial, easy to understand easy to use.
Here is my first bash script for launch CFD job one after one while you are not there and perhaps sleeping.

P.S. there is a lot of copy with *.org, it's just i like to have the origin file. And this is quiet basic i hope one day i would give you an improved one.

----- Copy there --------------------------------------------------------------------------------------------...
Member
Posted in Uncategorized
Views 1762 Comments 1 gregjunqua is offline Edit Tags
Old

Turbulance Model- how they ensure closure of RANS Model.

Posted May 13, 2013 at 07:11 by K_RAMAKRISHNAN

In CFD simulations involving turbulence we are focused on predicting the effect of the turbulent flow rather then the actual fluid flow. Example we are not worried about the eddies which happen on a microsecond timescale but are rather focused on the effect that turbulence will have on flow parameters.

In RANS Model we introduce extra variables like u', v', p' in the flow equations. Many different types of turbulence models provide additional equations which must be satisfied my flow...
New Member
Posted in Uncategorized
Views 737 Comments 0 K_RAMAKRISHNAN is offline Edit Tags
Old

Help using FLUENT in batch mode: script in the Journal file

Posted April 29, 2013 at 11:11 by diamondx

danobis, here is a working example of a journal files (.jou), when you see a ";", it means i'm asking fluent to skip that command:

/file/read-case-data /home/maghazlani/Analysis/intake_test_3-1-23000.cas
;/define/operating-conditions/operating-pressure 0
;/define/models/solver/density-based yes
;/define/models/energy yes
;/define/models/viscous/kw yes
;/define/boundary-conditions/modify-zones/zone-type 11 pressure-inlet
;/define/materials/change-create...
diamondx's Avatar
Super Moderator
Posted in Uncategorized
Views 2628 Comments 0 diamondx is offline Edit Tags
Old
Rating: 3 votes, 4.00 average.

Decomposition methods in parallel

Posted April 23, 2013 at 01:05 by Tushar@cfd (Blogs: OpenFOAM)
Updated March 27, 2015 at 06:51 by Tushar@cfd (Minor corrections)

OpenFOAM has four methods of decomposition:
(1) simple
(2) hierarchical
(3) scotch
(4) manual

"Scotch decomposition requires no geometric input from the user and attempts to minimise the number of processor boundaries."(for more information refer OpenFOAM website)

We tried to compare "simple" and "scotch" methods. These methods were verified for a test case using similar processor inputs:

Both...
Senior Member
Posted in Uncategorized
Views 1013 Comments 1 Tushar@cfd is offline Edit Tags

All times are GMT -4. The time now is 19:52.