The Velocity Field Created by a Shallow Bump in a Boundary Layer

Abstract

We report the results of measurements of the disturbance velocity field generated in a boundary layer by a shallow three-dimensional bump oscillating at a very low frequency on the surface of a flat plate. Profiles of the mean velocity, the disturbance velocity at the fundamental frequency and at the first harmonic are presented. These profiles were measured both upstream and downstream of the oscillating bump. Measurements of the disturbance velocity were also made at various spanwise and downstream locations at a fixed distance from the boundary of one displacement thickness. Finally, the spanwise spectrum of the disturbances at three locations downstream of the bump are presented.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1994
Accession Number
ADA281064

Entities

People

  • Chester E. Grosch
  • Michael Gaster
  • T. L. Jackson

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Boundaries
  • Boundary Layer
  • Computational Fluid Dynamics
  • Computers
  • Flow Fields
  • Fluid Mechanics
  • Frequency
  • Geometry
  • Hot Wire
  • Layers
  • Mathematics
  • Measurement
  • Mechanics
  • Stratified Fluids
  • Thickness
  • Three Dimensional
  • Very Low Frequency

Fields of Study

  • Physics

Readers

  • Fluid Mechanics and Fluid Dynamics.