Wall-Pressure Fluctuations and Pressure -Velocity Correlations in Turbulent Boundary Layers

Abstract

Pressure fluctuations of a turbulent layer along a plane boundary were investigated. All measurements were made at a nominal free-stream Mach number of 0.6 and an average Reynolds number per foot of 3.45 x 10 to the 6th power in a wind-tunnel facility specially designed for the purpose. The pressure fluctuations were measured with miniature pressure transducers and the velocity fluctuations with hot-wire anemometers. The rootmean-square magnitudes of the wall-pressure fluctuations agree with the Lilley-Hodgson theoretical results, whereas the mean-square spectra do not agree, except over a small range of frequencies. Measurements of the correlations of the wall-pressure fluctuations with the longitudinal component of the velocity fluctuations indicate that the contributions to the wall-pressure fluctuations are from two regions, an inner region near the wall and an outer region linked with the intermittency.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1963
Accession Number
AD0436674

Entities

People

  • John S. Serafini

Organizations

  • AGARD

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms

DTIC Thesaurus Topics

  • Boundary Layer
  • Convection
  • Fluid Dynamics
  • Hot Wire Anemometers
  • Mach Number
  • Measurement
  • National Security
  • Piezoelectric Transducers
  • Pressure Gradients
  • Pressure Transducers
  • Reynolds Number
  • Skin Friction
  • Static Pressure
  • Transducers
  • Turbulent Boundary Layer
  • Turbulent Flow
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Fluid Dynamics.
  • Fluid Mechanics and Fluid Dynamics.