Development of a simplified optical technique for the simultaneous measurement of particle size distribution and velocity
James Lee Smith, George C. Marshall Space Flight Center, United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch
National Aeronautics and Space Administration, Scientific and Technical Information Branch, 1983 - Science - 26 pages
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Amplitude data graphs amplitude ratio AX)2 EXP BEAM SPLITTER Bourke develop dimensionless DISTRIBUTION AND VELOCITY Doppler Effect dual-beam Durst and Whitelaw experimental procedure Final correlation Fluid Mechanics frequency fringe pattern fringe spacing FRINGE WIDTH INCHES Huffaker indicated with Figures intensity interference James Lee Smith laser beam laser Doppler anemometry laser Doppler velocimeters LDA devices light source lines per inch Marshall Space Flight measure particle measured velocity MEASUREMENT OF PARTICLE MIRROR monochromatic multiple particles normal distribution normal particle number density number of particles obtained optical arrangement oscilloscope particle diameter distribution PARTICLE DIAMETER INCHES particle passes particle size distributions photodetector Photograph of velocity photomultiplier tube projected grating proof of principle range reference-beam relationship between particle Ronchi rulings sandpaper 17.6 sandpaper particle diameter scattered light scattered-beam Scattering Theory signal 15 SIMPLIFIED OPTICAL TECHNIQUE SIMULTANEOUS MEASUREMENT Space Flight Center spectrum analyzer Superfine sandpaper test sample test surface TEST VOLUME velocity and particle velocity signal 14