Overview

This text presents infromation on velocity measurements that are necessary in many fields of fluid mechanics and related disciplines. It includes recent developments in the traditional method of hot-wire anemometry and the state of the art in commercially availbale systems. Novel approaches to this topic, based on videogrammetric principles, are treated in Chapters Three and Four. Chapter Three treats the application of videogrammetry in particle tracking velocimetry. The basic principles and their implementation are described in some detail. Performance tests show that the accuracy of the method is comparable to that of LDA. It is, however, a fully three-dimensional measuring technique, capable of determining long particle trajectories which are needed for the study of particle dispersion in turbulent flows and the associated Lagrangian statistics. Least squares matching is applied in Chapter Four to track in space three-dimensional patterns in small cuboids obtained by laser-induced fluorescence tomography. The method yields fully three-dimensional information on the velocity field, the vorticity field and the field of the rate of strain tensor. In addition, concentration distribution and its derivatives can be determined. Attention is given to presenting the basic theoretical aspects of these new methods as well as practical information needed for their application.

Full Product Details

Author:   Th. Dracos
Publisher:   Springer
Imprint:   Springer
Edition:   1996 ed.
Volume:   4
Dimensions:   Width: 15.60cm , Height: 1.90cm , Length: 23.40cm
Weight:   1.430kg
ISBN:  

9780792342564

ISBN 10:   0792342569
Pages:   312
Publication Date:   31 October 1996
Audience:   Professional and scholarly ,  General/trade ,  Professional & Vocational
Format:   Hardback
Publisher's Status:   Active
Availability:   In Print  
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Table of Contents

Determination of 3-D Velocity and Vorticity Vectors in Turbulent Flows by Multi-Hot-Wire Anemometry.- The Multi channel Constant Temperature Anemometer.- Particle Image Velocimetry: A New Approach in Experimental Fluid Research.- Real-Time Signal Processing in Particle Image Velocimetry.- Investigation of Unsteady Flow Fields in Wind Tunnels by Means of Particle Image Velocimetry.- Three-Dimensional Particle Velocimetry.- Particle Tracking Velocimetry (PTV), Basic Concepts.- Videogrammetry: Methodology and PTV/LIF Applications.- Contributions of Digital Photogrammetry to 3-D PTV.- Particle Tracking in Three-Dimensional Space.- Establishment of a Videogrammetric PTV System.- Laser Induced Fluorescence Velocimetry , Basic Concepts.- Adaptive Least-Squares-Matching for Accurate Tracking of Patterns in Voxel Data Sequences.- Establishment of a Tomographic Laser Induced Fluorescence System.- Application and Performance of LIF-Velocimetry.

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