Experimental Study of High Reynolds Number (Re =23000) Two and Three-Dimensional Turbulent Boundary Layers

Abstract

Experimental data obtained in a two-dimensional turbulent boundary layer (TBL) flow and a three-dimensional (3D) pressure-driven TBL flow around a wing/body junction are presented. Reynolds number effects are investigated. Fine spatial resolution laser-Doppler velocimeter measurements of mean velocity and higher order statistics including the third order products measured for 9 stations are reported. Reynolds number based on momentum thickness (Re sub theta) of the developing 2-D boundary layer on the wall was Re sub theta = 232OO, and the approach nominal reference velocity of the undisturbed air flow was 32 m/sec. The wing shape used had a 3:2 elliptical nose, NACA 0020 profiled tail and it was mounted on a flat wall. Distribution of measured static pressure variation on the wall, turbulent kinetic energy and some derived quantities such as the flow angle, flow gradient angle, shear stress angle, and modeling parameters are also discussed.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1998
Accession Number
ADA358241

Entities

People

  • Cindy Whitfield
  • Jacob A George
  • M. Semih Olomen
  • Roger L. Simpson

Organizations

  • Virginia Tech

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Boundary Layer
  • Computational Fluid Dynamics
  • Dynamic Pressure
  • Flow Visualization
  • Fluid Dynamics
  • Fluid Flow
  • Fluid Mechanics
  • Measurement
  • Mechanical Properties
  • Pressure Distribution
  • Pressure Measurement
  • Reynolds Number
  • Shear Stresses
  • Static Pressure
  • Three Dimensional
  • Turbulent Mixing
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Fluid Mechanics and Fluid Dynamics.

Technology Areas

  • Directed Energy