LIQUID VELOCITY MEASUREMENT BY ELECTRONIC DETECTION OF PARTICLE IMAGES,

Abstract

Tracer particles are frequently used to study fluid flows. This report describes experiments with an electronic detection system for tracer particles, which it was thought would provide a rapid readout of velocity. The light scattered from the moving particles was passed through a grid, in such a way that the frequency of modulation by the grid was found to vary with the latex particle size, from 1 for 1 particles, to 10 for 10 particles. Bandwidths were wider than expected, suggesting that out of focus particles were being detected, which would prevent the use of this method for studying turbulent flows. (Author)

Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1968
Accession Number
AD0684822

Entities

People

  • William B. Clarke

Organizations

  • Massachusetts Institute of Technology

Tags

DTIC Thesaurus Topics

  • Bandwidth
  • Detection
  • Flow
  • Fluid Flow
  • Frequency
  • Measurement
  • Modulation
  • Particle Size
  • Particles
  • Turbulent Flow

Fields of Study

  • Physics

Readers

  • Aerosol Science/Aerosol Physics
  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.
  • Educational Psychology

Technology Areas

  • Microelectronics