Smart questions
Smart answers
Smart people
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Member Login




Remember Me
Forgot Password?
Join Us!

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips now!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

Join Eng-Tips
*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.
Jobs from Indeed

Link To This Forum!

Partner Button
Add Stickiness To Your Site By Linking To This Professionally Managed Technical Forum.
Just copy and paste the
code below into your site.

kafeel (Aeronautics) (OP)
22 Jul 02 12:23
Hi!
I am trying to generate turbulence in a wind tunnel (1148mm X 814mm). I need longerlength scales(longitudenal) at lower turbulence intensities. I have used typical grids with the ratio of spacing to teh bar thickness being 4 and 5. I have tried bars as wide as 400mm. the max. length scales I could achieve was 0.11m . According to Vickery the max. length scales cannot be longer than 13% of the width of the tunnel, that would mean a max. of 0.15m length scales, however I havent been able to achieve this.
The turbulence has to be uniform across the cross section.
I am using Hotwire annemometry for analysing the flow properties. the length scales are found by matching the spectra with the von'karman spectra (length scale being the variable parameter).

Thanks in advance

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close