Some Supersonic Wind Tunnel Nozzle Boundary Layer Characteristics.

Abstract

Sidewall and nozzle wall boundary layer profile parameters have been determined by a least-squares fit of a 'law of the wall' -- 'law of the wake' turbulent boundary layer equation to a number of experimental observations including some recent data from the BRL Supersonic Wind Tunnel No. 1. The parameters include: velocity scale, thickness, wake and wall region parameters. Quantitative comparisons have been made between boundary layer measurements in the BRL tunnel and other facilities. Variation of Mach number is found to effect the sidewall wake region considerably more than it effects the nozzle wall boundary layer and this is believed to be related to the differences in the upstream history of the two layers. (Author)

Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1976
Accession Number
ADA024980

Entities

People

  • James E. Danberg

Organizations

  • Ballistic Research Laboratory

Tags

DTIC Thesaurus Topics

  • Boundaries
  • Boundary Layer
  • Layers
  • Mach Number
  • Nozzles
  • Research Facilities
  • Supersonic Wind Tunnels
  • Test Facilities
  • Turbulent Boundary Layer
  • Wind Tunnel Nozzles
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Fluid Dynamics.
  • Semiconductor Device Technology
  • Statistical inference.

Technology Areas

  • Hypersonics
  • Hypersonics - Hypersonic Boundary Layers
  • Hypersonics - Hypersonic Flow