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

Design Optimisation

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

Reply
 
LinkBack Thread Tools Display Modes
Old   June 25, 2004, 12:16
Default Design Optimisation
  #1
Abhinav Sona
Guest
 
Posts: n/a
Hi, I am working on design optimisation project to reduce aerodynamic drag of vehicle using Fluent 6.1. If anybody doing/done similar work in this field design optimisation, please advice me.It will be great if someone would like to discuss about design optimisation. Thank you ....... Sona
  Reply With Quote

Old   June 25, 2004, 12:38
Default Re: Design Optimisation
  #2
An Modh Coinniolach
Guest
 
Posts: n/a
Whatever algorithmic approach (genetic algorithm, simplex method, design of experiments) that you decide to take to your optimisation problem, the first thing you will need to do is automate your geometry specification, geometry generation, mesh generation, boundary conditions set-up and model set-up in Fluent. Also, you may need to automate grid adaption.

This is generally much easier in 2-D obviously, particularly mesh generation, but it's all dependant on your particular case.

You can achieve much of the automation of the Gambit and Fluent phases of the simulation quite easily using journal files, but you will need to write SCHEME code in order to get Fluent to save results (force, area-weighted average pressure, whatever is relevant to you, etc.) to a file on your hard drive (which can be read by an optimisation algorithm).

The first thing you could do is create the Gambit and Fluent journal files you will need. You can do that immediately. You would want to be in a position to open Gambit, run the Gambit journal file, then open Fluent, run the Fluent journal file and then wait for your solution to converge.

As regards geometry generation, you can integrate Gambit and Fluent with CAD programs like Pro/E and use functionality with the CAD program to run parametric studies on your geometry. This is not strictly necessary. You can write a program to create vertices and save them as a file that Gambit can read and create your geometry. This is what I did and I recommend it. It was not possible to define my geometry in a natural way using Pro/E, though it can be done. Writing a little program to create a parametric model gave me total flexibility to define my geometry.
  Reply With Quote

Old   June 25, 2004, 14:34
Default Re: Design Optimisation
  #3
Abhinav Sona
Guest
 
Posts: n/a
Thank you An Modh Coinniolach ....I created a model in Gambit and flow analysis was conducted in Fluent6.1.I am using a software called suclptor for shape optmisation (Gradient based). Now I am working on creating fluent journal file, but I am getting some problem in running the fluent journal file in sculptor. I request further advice on Design optimisation of a car for aerodynamics and any key factors need to be taken into consideration in car aerodynamics.

Thank you,
  Reply With Quote

Old   June 28, 2004, 12:32
Default Re: Design Optimisation
  #4
indd
Guest
 
Posts: n/a
I'm working only in prediction of car aerodynamics but with floworks, u can contact me for more informations. You can visit this web site, u will find a lot of interesting papers... http://www.tfd.chalmers.se/~lada/index.html
  Reply With Quote

Old   June 30, 2004, 11:11
Default Re: Design Optimisation
  #5
Joe Amodeo
Guest
 
Posts: n/a
  Reply With Quote

Old   June 30, 2004, 11:13
Default Re: Design Optimisation
  #6
Joe Amodeo
Guest
 
Posts: n/a
Hi, i'm responsible for aerodynamic optimisation using CFD at Jaguar Cars. I can give some information regarding this, or alternatively i would suggest books by Hucho, or Barnard.

cheers

joe
  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
CFD Design...The CFD Future John C. Chien Main CFD Forum 20 November 20, 2015 00:40
Design optimisation Oalid FLUENT 0 February 14, 2006 12:40
JOB: Sr. Thermal/Mechanical Design Engineer Dee Dee Dial Main CFD Forum 0 April 1, 2003 18:49
Info: Short Course On Thermal Design of Electronic Equipment Arnold Free Main CFD Forum 0 August 10, 1999 10:18
CFD - Trends and Perspectives Jonas Larsson Main CFD Forum 16 August 7, 1998 16:27


All times are GMT -4. The time now is 13:12.