This volume contains papers selected from contributions made to the Fourth Symposium on "Applications of Laser Anemometry". It is divided into three chapters concerned respectively with single-phase flows, two-phase flows and instrumentation. In the first chapter, the papers are concerned with fundamental investigations of shear flows as well as important applications including the Earth's boundary layer and internal combustion engines. The two-phase flows include applications of amplitude- and phase-based techniques to the sprays of Diesel and gas-turbine engines and to a fluidised bed and…mehr
This volume contains papers selected from contributions made to the Fourth Symposium on "Applications of Laser Anemometry". It is divided into three chapters concerned respectively with single-phase flows, two-phase flows and instrumentation. In the first chapter, the papers are concerned with fundamental investigations of shear flows as well as important applications including the Earth's boundary layer and internal combustion engines. The two-phase flows include applications of amplitude- and phase-based techniques to the sprays of Diesel and gas-turbine engines and to a fluidised bed and slurry flows. The new instrumentation includes miniature and multipoint LDV arrangements, PIDV and photochromic visualisation as well as improved explanations of laser-based systems.
I Single-Phase Flows.- The Energy Budget in the Near-Wall Region of a Turbulent Boundary Layer.- Linear Response of Fluctuating Forces to Turbulent Velocity Components.- Laser Doppler Measurements of Mean Turbulence Quantities, Time- and Spatial-Correlation Coefficients in the Wake of a Circular Cylinder.- Application of LDA to Large Wave Channels.- The Effect of the Forest Canopy on the Separated Flow Over Hills.- A Laser Anemometry Study of Separated Flow Over a Model Three-Dimensional Hill.- Inlet Valve Flow Generated by Helical Ports.- Velocity Measurements in a 5.8 liter Stratified-Charge Rotary Engine.- II Two-Phase Flows.- Resolution Limits of the Phase Doppler Technique and its Extension to Monitor Non-Ideal Fine Particles in Two-Phase Flows.- Calibration of Single Particle Sizing Velocimeters Using Photomask Reticles.- Turbulent Flow Characteristics of Dispersed Two-Phase Flow in Plane Shear Layer.- Application of Phase and Laser Doppler Anemometry to the Measurement of Droplet Size and Velocity in Gasoline and Diesel Fuel Injection Systems.- Measurement of Spray Mist Flow by a Compact Fiber LDV and Doppler-Shift Detector with a Fast DSP.- Back Scattered Phase Doppler Anemometry (PDA) for Spray Diagnostics.- Evolution of the Two-Phase Flow in the Near Field of an Air-Blast Atomizer Under Reacting and Non-Reacting Conditions.- Simultaneous Laser-Doppler-Velocimetry and Particle Sizing in the Freeboard of a Fluidized Bed Combustor.- Velocity Measurements of Transparent Non-Newtonian Pipeline Slurries with Laser Doppler Anemometry.- III Instrumentation.- Small Laser-Doppler Anemometers Using Semiconductor Lasers and Avalanche Photodiodes.- Battery-Driven Miniature LDA-System with Semiconductor Laser Diode.- Multipoint Simultaneous LDV Optics.- Fibre Optic TransitVelocimetry Using Diode Laser Sources.- Evaluation of Signal Processing Techniques in Laser Anemometry.- Burst Digital Correlator for LDV Signal Processing.- An Automatic Signal Processor for LDV Systems.- A Covariance Processor for Velocity and Size Measurements.- Processing of Phase-Doppler Signals Using the Cross-Spectral Density Function.- Measurement and Refinement of Velocity Data Using High Image Density Analysis in Particle Image Velocimetry.- Stochastic Modelling and Performance Prediction of PIDV Experiments.- Analysis of Turbulent Shear Flows Using Photochromic Visualization.- List of Contributors.
I Single-Phase Flows.- The Energy Budget in the Near-Wall Region of a Turbulent Boundary Layer.- Linear Response of Fluctuating Forces to Turbulent Velocity Components.- Laser Doppler Measurements of Mean Turbulence Quantities, Time- and Spatial-Correlation Coefficients in the Wake of a Circular Cylinder.- Application of LDA to Large Wave Channels.- The Effect of the Forest Canopy on the Separated Flow Over Hills.- A Laser Anemometry Study of Separated Flow Over a Model Three-Dimensional Hill.- Inlet Valve Flow Generated by Helical Ports.- Velocity Measurements in a 5.8 liter Stratified-Charge Rotary Engine.- II Two-Phase Flows.- Resolution Limits of the Phase Doppler Technique and its Extension to Monitor Non-Ideal Fine Particles in Two-Phase Flows.- Calibration of Single Particle Sizing Velocimeters Using Photomask Reticles.- Turbulent Flow Characteristics of Dispersed Two-Phase Flow in Plane Shear Layer.- Application of Phase and Laser Doppler Anemometry to the Measurement of Droplet Size and Velocity in Gasoline and Diesel Fuel Injection Systems.- Measurement of Spray Mist Flow by a Compact Fiber LDV and Doppler-Shift Detector with a Fast DSP.- Back Scattered Phase Doppler Anemometry (PDA) for Spray Diagnostics.- Evolution of the Two-Phase Flow in the Near Field of an Air-Blast Atomizer Under Reacting and Non-Reacting Conditions.- Simultaneous Laser-Doppler-Velocimetry and Particle Sizing in the Freeboard of a Fluidized Bed Combustor.- Velocity Measurements of Transparent Non-Newtonian Pipeline Slurries with Laser Doppler Anemometry.- III Instrumentation.- Small Laser-Doppler Anemometers Using Semiconductor Lasers and Avalanche Photodiodes.- Battery-Driven Miniature LDA-System with Semiconductor Laser Diode.- Multipoint Simultaneous LDV Optics.- Fibre Optic TransitVelocimetry Using Diode Laser Sources.- Evaluation of Signal Processing Techniques in Laser Anemometry.- Burst Digital Correlator for LDV Signal Processing.- An Automatic Signal Processor for LDV Systems.- A Covariance Processor for Velocity and Size Measurements.- Processing of Phase-Doppler Signals Using the Cross-Spectral Density Function.- Measurement and Refinement of Velocity Data Using High Image Density Analysis in Particle Image Velocimetry.- Stochastic Modelling and Performance Prediction of PIDV Experiments.- Analysis of Turbulent Shear Flows Using Photochromic Visualization.- List of Contributors.
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