LDA Application Methods Laser Doppler Anemometry for Fluid Dynamics
This technical book considers the application aspect of LDA techniques. Starting from the basic theories that are crucial for LDA users, the main subject of the book is focused on diverse application methods. It deals in reality with universal methodical
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Series Editors Wolfgang Merzkirch Donald Rockwell Cameron Tropea
For further volumes: http://www.springer.com/series/3837
Zhengji Zhang
LDA Application Methods Laser Doppler Anemometry for Fluid Dynamics
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Zhengji Zhang Oberhasli Hydroelectric Power Company 3862 Innertkirchen Switzerland [email protected]
ISBN 978-3-642-13513-2 e-ISBN 978-3-642-13514-9 DOI 10.1007/978-3-642-13514-9 Springer Heidelberg Dordrecht London New York Library of Congress Control Number: 2010931104 © Springer-Verlag Berlin Heidelberg 2010 This work is subject to copyright. All rights are reserved, whether the whole or part of the material is concerned, specifically the rights of translation, reprinting, reuse of illustrations, recitation, broadcasting reproduction on microfilm or in any other way, and storage in data banks. Duplication of this publication or parts thereof is permitted only under the provisions of the German Copyright Law of September 9, 1965, in its current version, and permission for use must always be obtained from Springer. Violations are liable to prosecution under the German Copyright Law. The use of general descriptive names, registered names, trademarks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use. Cover design: WMXDesign GmbH, Heidelberg Printed on acid-free paper Springer is part of Springer Science+Business Media (www.springer.com)
Preface
Experimental flow measurements, as the indispensable measure to investigate and improve engineering flows and flow processes, have been greatly advanced, as the laser methods have found applications in this area. Contrary to the traditional methods of using mechanical probes, the laser method obviously provides the most effective and accurate tools for non-intrusive flow measurements. Nowadays, the laser method for flow measurements has become very fashionable, mainly because of a lot of fashionable applications of laser techniques everywhere. The most widely applied laser methods for flow measurements are doubtlessly the laser Doppler anemometry (LDA), also known as the laser Doppler velocimetry (LDV), and particle image velocimetry (PIV). While the PIV method is suitable to quantitatively image the flow distribution, the LDA method is mostly applied to accurately diagnose and quantify all types of flows. The subject of treatment in the current book is the LDA method. Since the first successful test of LDA principles, especially during the last 20 years, the LDA technique has been developed to be a high-level standard method for flow measurements. It has been acknowledged as being the most successful and widely applied measurement technique in both the scientific and engineering flow investigations. The advanced laser and computer technologies have greatly contributed to the development of advanced LDA technology. As a very effective and reliable measurement technique, the LDA method demonstrates its established signific
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