Laser Doppler Visualization of 2D Velocity Fields with Minimization Dependence from Multi–Particle Scattering

Yury N. Dubnishchev; Yuri V. Chuguy; Jürgen Kompenhans

doi:10.4028/www.scientific.net/KEM.437.247

Paper Titles

Study and Improvement of a Destructive 3D Digitizer Based on Grinding Technique
p.227

Error Modeling and Compensation for High-Precision Non-Contact Four Coordinate Measuring System
p.232

Inner-Base Optoelectronic System for the Control of Linear Displacements
p.237

A Study of Key Optical Profiler Parameters for Form Error Measurement
p.242

Laser Doppler Visualization of 2D Velocity Fields with Minimization Dependence from Multi–Particle Scattering
p.247

Estimation of Uncertainty of Coordinate Measurements According to the Type B Method
p.253

Principles for Echo Position Determination Using Airborne Ultrasound
p.258

A 3D Ultrasonic Positioning System with High Accuracy for Indoor Application
p.263

THz-Imaging on its Way to Industrial Application
p.271

HomeKey Engineering MaterialsKey Engineering Materials Vol. 437Laser Doppler Visualization of 2D Velocity Fields...

Laser Doppler Visualization of 2D Velocity Fields with Minimization Dependence from Multi–Particle Scattering

Abstract:

The method of laser Doppler visualization and measurement of 2D velocity vector field in flows with minimization of influence of a multi–particle scattering is discussed. The investigated section in the flow is illuminated with a laser sheet. Our approach is based on reception of a pair wise difference of normalized frequency–demodulated images of a laser sheet in light beams scattered in various directions. The 2D velocities field is formed from linear combinations of images of the laser sheet in frequency–demodulated light scattered in directions orthogonal to it.