Turbulent Boundary Layer Wall-Pressure Fluctuations on an Axisymmetric Body.

Abstract

A buoyancy propelled, fin-stabilized vehicle with a favorable pressure gradient over a major portion of its length was tested at Lake Pend Oreille, Idaho. Turbulent boundary layer wall-pressure fluctuations were measured at numerous locations of the body. In the region of favorable pressure gradient, the normalized wall-pressure spectral density was found to be similar to that on a flat plate. Transition from laminar to turbulent boundary layer flow occurred on the 30-inch-maximum diameter vehicle at transition-length Reynolds numbers as large as 9.2 million. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Sep 07, 1977
Accession Number
ADA051339

Entities

People

  • H. V. L. Patrick

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Boundary Layer
  • Boundary Layer Flow
  • Crystal Structure
  • Drag Reduction
  • Free Stream
  • Frequency
  • Laminar Boundary Layer
  • Layers
  • Measurement
  • Pressure Distribution
  • Pressure Gradients
  • Pressure Transducers
  • Reynolds Number
  • Test Facilities
  • Transducers
  • Turbulent Boundary Layer
  • Turbulent Flow

Fields of Study

  • Physics

Readers

  • Environmental Remediation and Restoration.
  • Fluid Dynamics.
  • Structural Health Monitoring of Composite Structures.