×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • 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!
  • Students Click Here

*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.

Students Click Here

Jobs

aeroacoustics in wind turbines

aeroacoustics in wind turbines

aeroacoustics in wind turbines

(OP)
How can the structural noise from a wind turbine with tubular base can be reduced?

Which one of the techniques is better? Welding or bolting the individual pieces of the base? Or, is there a way to make the base in one piece?

RE: aeroacoustics in wind turbines

Hi,

i don't know exactly how your wind tunnel looks like, but i assumed it's big and that you can't have it on vibration isolators for stability reasons. I think that the only solution to reduce structure borne noise to other rooms is to mount the wind tunnel on a vibration isolated concrete slab. That can be a big job. Depending on the lower frequence you have to attenuate and how much isolation you need, one solution could be to lay the slab on a glass wool matt. But, there's no easy answer and a thorough analyse is required.

OkdB

RE: aeroacoustics in wind turbines

Hi again,

I though about it and the vibration source could be just the fan. hence, it migth be necessary to isolate just the fan with a concrete base with spring isolators and a flexible copling to the wind tunnel.

OkdB

RE: aeroacoustics in wind turbines

mankas- what do you mean by structural noise?

Do you mean vibration that is transmitted through the structure, that is turned into noise elsewhere? Or do you mean noise that is radiated by the structure itself?

It would be very helpful if you could identify the source and frequency of the noise as well.

Cheers

Greg Locock

RE: aeroacoustics in wind turbines

(OP)
sorry guys, I didnt define my question properly, I am talking about wind turbine generators.

Thank you anyway

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

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!


Resources