An Experimental Study of the Flapping Motion of a Turbulent Plane Jet.

Abstract

Measurements were conducted in order to characterize the flapping motion of a turbulent plane jet. The flapping is defined as the (apparently natural) lateral pseudooscillatory motion (in the average) of the flow field of the jet. The technique employed in these measurements was to compute crosscorrelation functions between the velocity fluctuations (one delayed in time) in the longitudinal direction, at two points on opposite sides of the jet. Standard hot-wire anemometry and on-line digital processing instrumentation were used. Four types of measurements were performed: with the probes symmetrically positioned with respect to the centerline of the jet; with the probes asymmetrically set with respect to the centerline; with the probes at points of different longitudinal coordinate; with an x-wire at the centerline of the jet where the autocorrelation of the lateral component of the velocity was measured.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1976
Accession Number
ADA071260

Entities

People

  • Jaime Gonzalo Cervantes De Gortari

Organizations

  • Purdue University

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Boundary Layer
  • Correlation Techniques
  • Cross Correlation
  • Equations
  • Fluid Dynamics
  • Fluidic Amplifiers
  • Measurement
  • Mechanics
  • New York
  • Physics Laboratories
  • Pressure Measurement
  • Random Variables
  • Research Facilities
  • Reynolds Number
  • Stratified Fluids
  • Turbulent Mixing
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Approximation Theory.
  • Fluid Mechanics and Fluid Dynamics.