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

We have to choose a CFD

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

Reply
 
LinkBack Thread Tools Display Modes
Old   September 24, 2012, 02:58
Default We have to choose a CFD
  #1
New Member
 
Pierre Louys
Join Date: Sep 2012
Posts: 1
Rep Power: 0
pierrel is on a distinguished road
Hello,
I'm involved in a "Eco Marathon" Project (or supermileage...)
The project consist in building a prototype that has to be as effective as possible.
This is the site of our project: www.team-ecomotion.com

We would like to process the body of our prototype in a CFD package in order to try to find improvements.

Do you have a CFD software to advise us ?
Price, ease of use are of course importants criterias.

To be complete, the body has been designed using Autodesk Inventor .

Please do not hesitate to sk questions if my question is not accurate enough...

Thank you in advance,

Pierre
pierrel is offline   Reply With Quote

Old   September 25, 2012, 00:33
Default
  #2
New Member
 
Maged
Join Date: Sep 2012
Posts: 7
Rep Power: 4
Maged_CFD is on a distinguished road
Hello Pierre,

I checked your website and it seems like a very interesting project.

If you are looking for an accurate, easy-to-use, fast and cost effective CFD package to simulate your prototype, please check out SimericsMP CFD software.

http://www.simerics.com/gallery_motorcycle

SimericsMP is an integrated CFD solution that includes automated mesh generator, per-processor, solver and post-processor.

If you interested in further information, please feel free to contact me at mi@simerics.com

Best regards,
Maged
Maged_CFD is offline   Reply With Quote

Old   September 25, 2012, 05:12
Default
  #3
Super Moderator
 
Oliver Gloth
Join Date: Mar 2009
Location: Todtnau, Germany
Posts: 114
Rep Power: 8
ogloth is on a distinguished road
Maged,

The interesting regions cannot be seen in the pictures posted on the advertising page. How are the boundary layers resolved?

I would assume that an accurate boundary layer resolution is important for the kind of geometry in question.

Regards,
Oliver
ogloth is offline   Reply With Quote

Old   September 25, 2012, 08:51
Default
  #4
New Member
 
Maged
Join Date: Sep 2012
Posts: 7
Rep Power: 4
Maged_CFD is on a distinguished road
Hello Oliver,

I totally agree that resolving (or accurate modeling) of the boundary layer is important for this kind of problem, in addition to a high quality mesh.

The choice between LES/DNS vs. RANS, depends on the time and computational/financial resources available for a particular project.

In addition to the benchmark and validation cases available on our website http://www.simerics.com/simulation_gallery_benchmark , we did a benchmark study on flow around the bluff "Ahmed body". SimericsMP achieved very good agreement with measurements compared to the results reported in the following study by Moeller et al. http://tinyurl.com/9493pb8 .

I can provide you with more information about this study, if you are interested.

Best,
Maged
Maged_CFD is offline   Reply With Quote

Old   September 25, 2012, 09:41
Default
  #5
Super Moderator
 
Oliver Gloth
Join Date: Mar 2009
Location: Todtnau, Germany
Posts: 114
Rep Power: 8
ogloth is on a distinguished road
Hello Maged,

the Ahmed body has clearly defined separation points which might not necessarily be the case for the geometry in question here. Thus you might still get reasonable result even if y+ for the first cell is not ideal.

What is your boundary layer strategy? Do you have a zoom in picture of a resolved boundary layer? Which values of y+ can you reach with your mesher?

Cheers,
Oliver
ogloth is offline   Reply With Quote

Old   September 27, 2012, 03:42
Default
  #6
Senior Member
 
Joern Beilke
Join Date: Mar 2009
Location: Dresden
Posts: 185
Rep Power: 9
JBeilke is on a distinguished road
Doing an optimisation of of such a body is quite difficult. So you might look at an "adjoint" methodology. Have a look at:

http://adl.stanford.edu/docs/display...tating+Airfoil


JBeilke is offline   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
STAR-Works : Mainstream CAD with CFD CD adapco Group Marketing CD-adapco 0 February 13, 2002 13:23
Where do we go from here? CFD in 2001 John C. Chien Main CFD Forum 36 January 24, 2001 22:10
ASME CFD Symposium, Atlanta, July 2001 Chris R. Kleijn Main CFD Forum 0 September 13, 2000 04:48
ASME CFD Symposium, Atlanta, July 2001 Chris R. Kleijn Main CFD Forum 0 August 21, 2000 04:49
Which is better to develop in-house CFD code or to buy a available CFD package. Tareq Al-shaalan Main CFD Forum 10 June 12, 1999 23:27


All times are GMT -4. The time now is 00:59.