Suppression of Perforated Wall Noise in a Transonic Wind Tunnel and the Effects on Aerodynamic Data

Abstract

Tests were conducted to determine the effect of screen overlays installed on the airside test section walls for the purpose of suppressing the wall noise. Data are presented to illustrate that the screens and resulting noise reduction affected the test section longitudinal flow uniformity, plenum- stream calibration, wave cancellation properties of the walls, transition Reynolds number, and shock/boundary-layer interaction. In general, the effect of noise reduction on viscous phenomena was similar to that observed with decreased Reynolds number.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1978
Accession Number
ADA054417

Entities

People

  • J. L. Jacocks
  • R. L. Parker Jr.

Organizations

  • Arnold Engineering Development Complex

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Aerodynamic Characteristics
  • Air Force
  • Boundary Layer
  • Geometry
  • Mach Number
  • Measurement
  • Noise Reduction
  • Pressure Distribution
  • Pressure Measurement
  • Reynolds Number
  • Stagnation Pressure
  • Static Pressure
  • Strain Gages
  • Test And Evaluation
  • Transonic Wind Tunnels
  • Wind Tunnel Tests
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Acoustics.
  • Fluid Dynamics.
  • Fluid Mechanics and Fluid Dynamics.