[ exact phrase in "" ]

[ including uploaded files ]

ISSUES/LOCATIONS

List all documents, ordered…

By Title

By Author

View PDF, DOC, PPT, and XLS files on line
Get weekly updates

WHAT TO DO
when your community is targeted

RSS

RSS feeds and more

Keep Wind Watch online and independent!

Donate via Paypal

Donate via Stripe

RSS

Add NWW documents to your site (click here)

Wind Watch is a registered educational charity, founded in 2005.

Experimental and numerical investigation of blade–tower interaction noise 

Author:  | Noise, Technology

Abstract:
This paper describes the generation of blade–tower interaction (BTI) noise from upwind turbines and pylon-mounted fans using a combination of experimental and numerical means. An experimental rotor-rig was used in an anechoic chamber to obtain BTI acoustic data under controlled conditions. A computational model, based on the solution of the unsteady Reynolds Averaged Navier Stokes (URANS) equations and Curle’s acoustic analogy, was used to describe the generation of fan and simplistic model of wind turbine BTI noise by the rotor-rig. For both the fan and model wind turbine case, the tower was found to be a more significant source of BTI noise than rotor blades. The acoustic waveforms for both turbine and fan are similar; however, in the case of the turbine, the blade contribution reinforces that from the tower, while in the case of a fan, there is some cancellation between the tower source and the blade source. This behavior can be explained by the unsteady aerodynamics occurring during BTI.

Branko Zajamsek, Kristy L. Hansen, College of Science and Engineering, Flinders University, Adelaide, Australia
Yendrew Yauwenas, Con J.Doolan, Victoria Timchenko, John Reizes, School of Mechanical and Manufacturing Engineering, University of New South Wales, Sydney, Australia
Colin H. Hansen, School of Mechanical Engineering, University of Adelaide, Adelaide, Australia

Journal of Sound and Vibration
Volume 443, 17 March 2019, Pages 362-375
doi: 10.1016/j.jsv.2018.11.048

Download original document: “Experimental and numerical investigation of blade–tower interaction noise

This material is the work of the author(s) indicated. Any opinions expressed in it are not necessarily those of National Wind Watch.

The copyright of this material resides with the author(s). As part of its noncommercial educational effort to present the environmental, social, scientific, and economic issues of large-scale wind power development to a global audience seeking such information, National Wind Watch endeavors to observe “fair use” as provided for in section 107 of U.S. Copyright Law and similar “fair dealing” provisions of the copyright laws of other nations. Queries e-mail.

Wind Watch relies entirely
on User Funding
   Donate via Paypal
(via Paypal)
Donate via Stripe
(via Stripe)

Share:

e-mail X FB LI TG TG Share

Get the Facts
CONTACT DONATE PRIVACY ABOUT SEARCH
© National Wind Watch, Inc.
Use of copyrighted material adheres to Fair Use.
"Wind Watch" is a registered trademark.

 Follow:

Wind Watch on X Wind Watch on Facebook

Wind Watch on Linked In Wind Watch on Mastodon