The Flow Around a Squared Obstacle,

Abstract

Laser-Doppler measurements of the velocity distribution around and in the wake of a two-dimensional squared obstacle for Re = 14000 are reported. The results were measured with a counter interfaced with a microprocessor. The counter was built based on a specific design to quantify and diminish errors resulting from bias sources. In addition, the periodic character of the flow in the wake was characterised by measurements of turbulence spectra with FFT instrumentation. The values of the predominant frequencies were correlated with the flow Reynolds number.

Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1986
Accession Number
ADP005536

Entities

People

  • D. F. Durao
  • J. C. Pereira
  • M. V. Heitor

Organizations

  • Instituto Superior Técnico

Tags

DTIC Thesaurus Topics

  • Engine Components
  • Engines
  • Frequency
  • Instrumentation
  • Measurement
  • Measuring Instruments
  • Microprocessors
  • Pennsylvania
  • Personality
  • Reynolds Number
  • Spectra
  • Turbulence
  • Two Dimensional

Readers

  • Approximation Theory.
  • Fluid Dynamics.
  • Systems Analysis and Design

Technology Areas

  • Directed Energy