Experimental Studies of the Mean and Fluctuating Characteristics of Hypersonic Turbulent Bounday Layers

Abstract

The objective of this program of fundamental research in turbulent flows is to advance the experimental knowledge of the detailed structure and turbulent mechanisms in regions of attached and separated turbulent hypersonic flows. The experimental program is being conducted in high Reynolds number hypersonic flows for high-enthalpy conditions where compressibility and turbulent non-equilibrium effects are believed to be of key importance. Three basic studies are being conducted under the current effort. The first is an experimental program in which detailed characteristics of the turbulent structures are being obtained using electron-beam techniques. In the second study, we have examined transitional and turbulent flows along the stagnation line of a highly-swept cylinder. In the third program segment, we have been analyzing and compiling a database of detailed experimental measurements which will be used as a basis for code validation studies. During the past year these studies have been presented and discussed in a number of informal and formal meetings including an ALAA presentation in Huntsville. Turbulent flows, Mechanisms, Electron-bean techniques, Transitional and turbulent flows, Stagnation line, Cylinder, Code validation, Database.

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Document Details

Document Type
Technical Report
Publication Date
Dec 13, 1993
Accession Number
ADA278441

Entities

People

  • Michael S. Holden

Organizations

  • Calspan-University of Buffalo Research Center

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Boundary Layer
  • Computational Fluid Dynamics
  • Flow Visualization
  • Fluid Dynamics
  • Fluid Flow
  • Fluid Mechanics
  • Heat Transfer
  • Hydrodynamics
  • Hypersonic Vehicles
  • Measurement
  • Pressure Distribution
  • Pressure Measurement
  • Reynolds Number
  • Turbulent Flow
  • Turbulent Mixing
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Computational Fluid Dynamics (CFD)
  • Fluid Dynamics.
  • Technical Research and Report Writing.

Technology Areas

  • Directed Energy
  • Hypersonics
  • Hypersonics - Hypersonic Flow
  • Microelectronics