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LDA Application Methods

Laser Doppler Anemometry for Fluid Dynamics

  • Book
  • © 2010

Overview

Authors:
  1. Zhengji Zhang

    1. Kraftwerke Oberhasli AG (KWO), Innertkirchen, Switzerland

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  • This technical book considers the application side of LDA techniques
  • Detailed application methods for LDA users in practical applications
  • Focuses on diverse application methods
  • Gives for the first time an application reference for LDA users in improving the optical conditions and enhancing the measurement accuracies
  • Includes supplementary material: sn.pub/extras

Part of the book series: Experimental Fluid Mechanics (FLUID)

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Table of contents (18 chapters)

  1. Front Matter

    Pages i-xv
    Download chapter PDF

  2. Introduction

    • Zhengji Zhang
    Pages 1-9

  3. Specifications of Engineering Turbulent Flows

    • Zhengji Zhang
    Pages 11-17

  4. LDA Principles and Laser Optics

    • Zhengji Zhang
    Pages 19-40

  5. LDA Systems

    • Zhengji Zhang
    Pages 41-45

  6. Basic Data Processing Methods in LDA Measurements

    • Zhengji Zhang
    Pages 47-52

  7. Linear Transformation of Velocities and Turbulent Stresses

    • Zhengji Zhang
    Pages 53-67

  8. Tracer Particles and Particle Motion Equations

    • Zhengji Zhang
    Pages 69-88

  9. Zero Correlation Method (ZCM)

    • Zhengji Zhang
    Pages 89-96

  10. Dual Measurement Method (DMM)

    • Zhengji Zhang
    Pages 97-111

  11. Symmetrical Method of 3D-Velocity Measurements

    • Zhengji Zhang
    Pages 113-116

  12. Non-stationary Turbulent Flows

    • Zhengji Zhang
    Pages 117-131

  13. Turbulent Flow with Spatial Velocity Gradient

    • Zhengji Zhang
    Pages 133-146

  14. Flow Measurements Behind the Plane Window: On-axis

    • Zhengji Zhang
    Pages 147-150

  15. Flow Measurements Behind the Plane Window: Off-axis

    • Zhengji Zhang
    Pages 151-189

  16. Flow Measurements in Circular Pipes

    • Zhengji Zhang
    Pages 191-217

  17. Fringe Distortion Effects

    • Zhengji Zhang
    Pages 219-226

  18. Velocity Bias Effects

    • Zhengji Zhang
    Pages 227-241

  19. LDA Application Examples

    • Zhengji Zhang
    Pages 243-251

  20. Back Matter

    Pages 253-272
    Download chapter PDF
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Keywords

About this book

This technical book considers the application side of LDA techniques. Starting from the basic theories that are crucial for each LDA user, the main subject of the book is focused on diverse application methods. In details, it deals with universal methodical techniques that have been mostly developed in the last 15 years. The book thus gives for the first time an application reference for LDA users in improving the optical conditions and enhancing the measurement accuracies. It also provides the guidelines for simplifying the measurements and correcting measurement errors as well as for clarifying the application limits and extending the application areas of LDA techniques. Beside the treatments of some traditional optical and flow mechanical features influencing the measurement accuracies, the book shows a broad spectrum of LDA application methods in the manner of measuring the flow turbulence, resolving the secondary flow structures, and quantifying the optical aberrations at measurements of internal flows etc.. Thus, it also supports the further developments of both the hard- and software of LDA instrumentations.

Authors and Affiliations

  • Kraftwerke Oberhasli AG (KWO), Innertkirchen, Switzerland

    Zhengji Zhang

About the author

Dr. -Ing. Zh. Zhang graduated from the School of Energy & Power Engineering of Xi’an Jiaotong University (PR China) in 1981. He received his PhD at the Institute of Thermo and Fluid Dynamics of Ruhr-University Bochum (Germany). Afterwards he joined Sulzer Markets & Technology Ltd in Winterthur, Switzerland, for experimental research of engineering flows. He is currently an engineer at the Oberhasli Hydroelectric Power Company (KWO), working on hydraulic designs and optimizations of hydraulic machineries. He is the author of the monograph «Freistrahlturbinen» 2009.

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