Développement de méthodes interférométriques pour la caractérisation des champs de particules

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ISBN 13 :
Total Pages : 154 pages
Book Rating : 4.:/5 (492 download)

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Book Synopsis Développement de méthodes interférométriques pour la caractérisation des champs de particules by : Shiliang Pu

Download or read book Développement de méthodes interférométriques pour la caractérisation des champs de particules written by Shiliang Pu and published by . This book was released on 2005 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have studied two optical methods for particle field characterization: ILIDS (Interferometric Laser Imaging for Droplet Sizing) and DIH (Digital In-line Holography). In the case of ILIDS, the particle field is illuminated by a laser sheet and the defocused images are recorded by a CCD camera. We have developed an image processing method. We show that the particle diameter and velocity distribution in a plane can be measured by using a common PIV (Particle Image Velocimetry) system. In DIH case, the particle field is illuminated by a laser beam and the in-line diffraction pattern is directly recorded by a CCD camera. Then, the 3D volume can be numerically reconstructed. We have firstly studied the influence of windowing function. Then, we have developed an image processing method which can give particle 3D location and diameter from the reconstructed image. The experimental tests shows that the two techniques can give reliable results for two-phase flows measurement.

Laser Metrology in Fluid Mechanics

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Publisher : John Wiley & Sons
ISBN 13 : 1118576950
Total Pages : 263 pages
Book Rating : 4.1/5 (185 download)

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Book Synopsis Laser Metrology in Fluid Mechanics by : Alain Boutier

Download or read book Laser Metrology in Fluid Mechanics written by Alain Boutier and published by John Wiley & Sons. This book was released on 2013-02-20 with total page 263 pages. Available in PDF, EPUB and Kindle. Book excerpt: In fluid mechanics, non-intrusive measurements are fundamental in order to improve knowledge of the behavior and main physical phenomena of flows in order to further validate codes. The principles and characteristics of the different techniques available in laser metrology are described in detail in this book. Velocity, temperature and concentration measurements by spectroscopic techniques based on light scattered by molecules are achieved by different techniques: laser-induced fluorescence, coherent anti-Stokes Raman scattering using lasers and parametric sources, and absorption spectroscopy by tunable laser diodes, which are generally better suited for high velocity flows. The size determination of particles by optical means, a technique mainly applied in two-phase flows, is the subject of another chapter, along with a description of the principles of light scattering. For each technique the basic principles are given, as well as optical devices and data processing. A final chapter reminds the reader of the main safety precautions to be taken when using powerful lasers.

Métrologie laser pour la mécanique des fluides : Granulométrie et techniques spectroscopiques ; Traité MIM, série Géomécanique

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Publisher : Lavoisier
ISBN 13 : 2746288222
Total Pages : 370 pages
Book Rating : 4.7/5 (462 download)

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Book Synopsis Métrologie laser pour la mécanique des fluides : Granulométrie et techniques spectroscopiques ; Traité MIM, série Géomécanique by : BOUTIER Alain

Download or read book Métrologie laser pour la mécanique des fluides : Granulométrie et techniques spectroscopiques ; Traité MIM, série Géomécanique written by BOUTIER Alain and published by Lavoisier. This book was released on 2012-07-01 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: En mécanique des fluides, les mesures non intrusives sont fondamentales pour améliorer la connaissance du comportement des écoulements. Les cartes de vitesse, de température et de concentration, ainsi que la granulométrie des particules dans les écoulements diphasiques, permettent de mieux appréhender les phénomènes physiques, pour ensuite valider les codes de calculs. Les mesures de vitesse (ainsi que de températures et de concentrations de différentes espèces) par des techniques spectroscopiques reposant sur la diffusion des molécules sont bien adaptées à la caractérisation des écoulements rapides et réactifs , elles reposent sur la fluorescence induite par laser, la diffusion Raman Anti-Stokes cohérente ou l'emploi de diodes laser accordables. Dans les écoulements diphasiques, la détermination de la granulométrie des particules par des moyens optiques, ainsi que les principes de diffusion de la lumière sont détaillés. Pour chaque technique, les principes de base sont décrits, ainsi que les dispositifs optiques et de traitements des signaux. Les principales mesures de sécurité pour utiliser des sources laser intenses sont rappelées.

Quantum Mechanics, Volume 3

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Publisher : John Wiley & Sons
ISBN 13 : 3527345558
Total Pages : 790 pages
Book Rating : 4.5/5 (273 download)

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Book Synopsis Quantum Mechanics, Volume 3 by : Claude Cohen-Tannoudji

Download or read book Quantum Mechanics, Volume 3 written by Claude Cohen-Tannoudji and published by John Wiley & Sons. This book was released on 2019-12-16 with total page 790 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new, third volume of Cohen-Tannoudji's groundbreaking textbook covers advanced topics of quantum mechanics such as uncorrelated and correlated identical particles, the quantum theory of the electromagnetic field, absorption, emission and scattering of photons by atoms, and quantum entanglement. Written in a didactically unrivalled manner, the textbook explains the fundamental concepts in seven chapters which are elaborated in accompanying complements that provide more detailed discussions, examples and applications. * Completing the success story: the third and final volume of the quantum mechanics textbook written by 1997 Nobel laureate Claude Cohen-Tannoudji and his colleagues Bernard Diu and Franck Laloë * As easily comprehensible as possible: all steps of the physical background and its mathematical representation are spelled out explicitly * Comprehensive: in addition to the fundamentals themselves, the books comes with a wealth of elaborately explained examples and applications Claude Cohen-Tannoudji was a researcher at the Kastler-Brossel laboratory of the Ecole Normale Supérieure in Paris where he also studied and received his PhD in 1962. In 1973 he became Professor of atomic and molecular physics at the Collège des France. His main research interests were optical pumping, quantum optics and atom-photon interactions. In 1997, Claude Cohen-Tannoudji, together with Steven Chu and William D. Phillips, was awarded the Nobel Prize in Physics for his research on laser cooling and trapping of neutral atoms. Bernard Diu was Professor at the Denis Diderot University (Paris VII). He was engaged in research at the Laboratory of Theoretical Physics and High Energy where his focus was on strong interactions physics and statistical mechanics. Franck Laloë was a researcher at the Kastler-Brossel laboratory of the Ecole Normale Supérieure in Paris. His first assignment was with the University of Paris VI before he was appointed to the CNRS, the French National Research Center. His research was focused on optical pumping, statistical mechanics of quantum gases, musical acoustics and the foundations of quantum mechanics.

Laser Doppler and Phase Doppler Measurement Techniques

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Publisher : Springer Science & Business Media
ISBN 13 : 3662051656
Total Pages : 741 pages
Book Rating : 4.6/5 (62 download)

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Book Synopsis Laser Doppler and Phase Doppler Measurement Techniques by : H.-E. Albrecht

Download or read book Laser Doppler and Phase Doppler Measurement Techniques written by H.-E. Albrecht and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 741 pages. Available in PDF, EPUB and Kindle. Book excerpt: Providing the first comprehensive treatment, this book covers all aspects of the laser Doppler and phase Doppler measurement techniques, including light scattering from small particles, fundamental optics, system design, signal and data processing, tracer particle generation, and applications in single and two-phase flows. The book is intended as both a reference book for more experienced users as well as an instructional book for students. It provides ample material as a basis for a lecture course on the subject and represents one of the most comprehensive treatments of the phase Doppler technique to date. The book will serve as a valuable reference book in any fluid mechanics laboratory where the laser Doppler or phase Doppler techniques are used. This work reflects the authors' long practical experience in the development of the techniques and equipment, as the many examples confirm.

Indium Seals

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Publisher :
ISBN 13 :
Total Pages : 20 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Indium Seals by : R. O. Adams

Download or read book Indium Seals written by R. O. Adams and published by . This book was released on 1964 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: The feasibility of using indium seals for large vacuum bell jars has been investigated. It is shown that such seals can be made; however, use of this type seal for repetitive operations is not recommended.

Quantum Theory of Finite Systems

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Publisher : Mit Press
ISBN 13 : 9780262022149
Total Pages : 657 pages
Book Rating : 4.0/5 (221 download)

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Book Synopsis Quantum Theory of Finite Systems by : Jean-Paul Blaizot

Download or read book Quantum Theory of Finite Systems written by Jean-Paul Blaizot and published by Mit Press. This book was released on 1986 with total page 657 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive and pedagogical account of the various methods used in the quantum theory of finite systems, including molecular, atomic, nuclear, and particle phenomena. Covering both background material and advanced topics and including nearly 200 problems, Quantum Theory of Finite Systems has been designed to serve primarily as a text and will also prove useful as a reference in research. The first of the book's four parts introduces the basic mathematical apparatus: second quantization, canonical transformations, Wick theorems and the resulting diagram expansions, and oscillator models. The second part presents mean field approximations and the recently developed path integral methods for the quantization of collective modes. Part three develops perturbation theory in terms of both time-dependent Feynman diagrams and time-independent Goldstone diagrams. A fourth part discusses variational methods based on correlated wavefunctions, including spin correlations. The approximation schemes are formulated for fermions and bosons at eigher zero or non-zero temperature. Although the formalism developed applies to both finite and infinite systems, the book stresses those aspects of the theory that are specific to the description of finite systems. Thus special attention is given to mean field approximations, the ensuing broken symmetries, and the associated collective motions such as rotations. Conversely, some specific features of systems with infinite numbers of degrees of freedom (such as the thermodynamic limit, critical phenomena, and the elimination of ultraviolet divergencies) are deliberately omitted. Jean-Paul Blaizot and Georges Ripka are associated with the Centre d'Etudes Nucleaires de Saclay.

Scientific Canadian Mechanics' Magazine and Patent Office Record

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ISBN 13 :
Total Pages : 1070 pages
Book Rating : 4.E/5 ( download)

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Book Synopsis Scientific Canadian Mechanics' Magazine and Patent Office Record by : Canada. Patent Office

Download or read book Scientific Canadian Mechanics' Magazine and Patent Office Record written by Canada. Patent Office and published by . This book was released on 1966-03 with total page 1070 pages. Available in PDF, EPUB and Kindle. Book excerpt: