laser metrology in fluid mechanics granulometry temperature and concentration measurements

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Laser Metrology In Fluid Mechanics

Author : Alain Boutier
ISBN : 9781118576953
Genre : Science
File Size : 42. 79 MB
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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.

Transport And Coherent Structures In Wall Turbulence

Author : Sedat Tardu
ISBN : 9781118576779
Genre : Technology & Engineering
File Size : 83. 3 MB
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Wall bounded turbulent flows are of major importance in industrial and environmental fluid mechanics. The structure of the wall turbulence is intrinsically related to the coherent structures that play a fundamental role in the transport process. The comprehension of their regeneration mechanism is indispensable for the development of efficient strategies in terms of drag control and near wall turbulence management. This book provides an up-to-date overview on the progress made in this specific area in recent years.

Emerging Technologies Requiring Research In Metrology

Author : National Research Council (U.S.). Board on Assessment of NBS Programs
ISBN : NAP:12532
Genre : Mensuration
File Size : 83. 87 MB
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Laser Velocimetry In Fluid Mechanics

Author : Alain Boutier
ISBN : 9781118569337
Genre : Science
File Size : 82. 31 MB
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In fluid mechanics, velocity measurement is fundamental in order to improve the behavior knowledge of the flow. Velocity maps help us to understand the mean flow structure and its fluctuations, in order to further validate codes. Laser velocimetry is an optical technique for velocity measurements; it is based on light scattering by tiny particles assumed to follow the flow, which allows the local fluid flow velocity and its fluctuations to be determined. It is a widely used non-intrusive technique to measure velocities in fluid flows, either locally or in a map. This book presents the various techniques of laser velocimetry, as well as their specific qualities: local measurements or in plane maps, mean or instantaneous values, 3D measurements. Flow seeding with particles is described with currently used products, as well as the appropriate aerosol generators. Post-processing of data allows us to extract synthetic information from measurements and to perform comparisons with results issued from CFD codes. The principles and characteristics of the different available techniques, all based on the scattering of light by tiny particles embedded in the flow, are described in detail; showing how they deliver different information, either locally or in a map, mean values and turbulence characteristics.

Industrial And Environmental Applications Of Fluid Mechanics

Author : American Society of Mechanical Engineers. Fluids Engineering Division. Summer Meeting
ISBN : UOM:39015030274255
Genre : Fluid mechanics
File Size : 40. 89 MB
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Scientific And Technical Aerospace Reports

Author :
ISBN : UIUC:30112075701539
Genre : Aeronautics
File Size : 72. 71 MB
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Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Second International Conference On Photomechanics And Speckle Metrology

Author : Fu-Pen Chiang
ISBN : UOM:39015028429705
Genre : Science
File Size : 84. 40 MB
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