Design and performance of an aeroacoustic wind tunnel facility at the University of Bristol

Yannick D Mayer, Hasan Kamliya Jawahar, Matthew Szoke, Syamir Alihan Showkat Ali, Mahdi Azarpeyvand*

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

26 Citations (Scopus)
129 Downloads (Pure)

Abstract

This paper provides an overview of the design and performance of the new aeroacoustic wind tunnel facility at the University of Bristol. The purpose of the facility is to enable near- and far-field acoustic and aerodynamic studies on a variety of different aerodynamic components and to examine diverse noise control techniques. The facility comprises a large acoustic chamber, anechoic down to 160 Hz, and a temperature controlled closed-circuit wind tunnel with an open test section. The wind tunnel features two interchangeable rectangular nozzles with a partially shared contraction. Both nozzles are shown to possess a high flow quality with high flow uniformity and low turbulence intensity of 0.09% and 0.12% for the smaller and larger nozzle, respectively. The maximum attainable flow speeds are 40 m/s for the larger nozzle and 120 m/s for the smaller nozzle corresponding to Reynolds numbers of 2.7 million and 8.1 million per meter, respectively. In this paper, we will present various aerodynamic and acoustic results to characterize the performance of the facility. The background noise levels are found to be sufficiently low and the far-field noise measurements from a flat plate, a round cylinder and a NACA 0012 airfoil compare favorably to existing experimental observations.

Original languageEnglish
Pages (from-to)358-370
Number of pages13
JournalApplied Acoustics
Volume155
Early online date13 Jun 2019
DOIs
Publication statusPublished - 1 Dec 2019

Keywords

  • Aeroacoustics
  • Nozzle design
  • Trailing edge noise
  • Wind tunnel design

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