Distributed Laser Doppler Velocimetry: A New Tool for Experimental Fluid-Mechanics PDF Download
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Author: V. Gusmeroli
Publisher:
ISBN:
Category :
Languages : en
Pages : 5
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Book Description
A novel monobeam Distributed Laser Doppler Velocimeter, DLDV, that permits a fast recovery of the flow profile is described. The DLDV use of low-coherence multiplexing concept, along a reference-beam backscattering LDV scheme, to realize a remote addressing of the flow point. The experimental results of flow profile recovery by an all fiber DLDV implementation is reported along with a theoretical analysis of the novel scheme. The results confirm the exceptional capabilities offered by the DLDV in experimental fluid mechanics. (Author).
Author: V. Gusmeroli
Publisher:
ISBN:
Category :
Languages : en
Pages : 5
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Book Description
A novel monobeam Distributed Laser Doppler Velocimeter, DLDV, that permits a fast recovery of the flow profile is described. The DLDV use of low-coherence multiplexing concept, along a reference-beam backscattering LDV scheme, to realize a remote addressing of the flow point. The experimental results of flow profile recovery by an all fiber DLDV implementation is reported along with a theoretical analysis of the novel scheme. The results confirm the exceptional capabilities offered by the DLDV in experimental fluid mechanics. (Author).
Author: Alain Boutier
Publisher: John Wiley & Sons
ISBN: 1118569334
Category : Science
Languages : en
Pages : 436
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Book Description
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.
Author: Yasushi Takeda
Publisher: Springer Science & Business Media
ISBN: 4431540261
Category : Technology & Engineering
Languages : en
Pages : 278
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Book Description
The ultrasonic velocity profile (UVP) method, first developed in medical engineering, is now widely used in clinical settings. The fluid mechanical basis of UVP was established in investigations by the author and his colleagues with work demonstrating that UVP is a powerful new tool in experimental fluid mechanics. There are diverse examples, ranging from problems in fundamental fluid dynamics to applied problems in mechanical, chemical, nuclear, and environmental engineering. In all these problems, the methodological principle in fluid mechanics was converted from point measurements to spatio-temporal measurements along a line. This book is the first monograph on UVP that offers comprehensive information about the method, its principles, its practice, and applied examples, and which serves both current and new users. Current users can confirm that their application configurations are correct, which will help them to improve the configurations so as to make them more efficient and effective. New users will become familiar with the method, to design applications on a physically correct basis for performing measurements accurately. Additionally, the appendix provides necessary practical information, such as acoustic properties.
Author: H.-E. Albrecht
Publisher: Springer Science & Business Media
ISBN: 3662051656
Category : Science
Languages : en
Pages : 741
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Book Description
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.
Author: Dennis K. McLaughlin
Publisher:
ISBN:
Category :
Languages : en
Pages : 36
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Book Description
Measurements were made of horizontal and vertical velocity components along the center line plane of a turbulent jet exiting into a cross flow. The dual scatter laser Doppler velocimeter was used in both the continuous wave mode and the individual realization mode. In the latter case, numerical averaging over many individual measurements was used to compute the average velocity components. Encouraging results were obtained which indicate that the laser Doppler velocimeter will become an important tool in the field of experimental fluid mechanics. (Author).
Author: Ronald J. Adrian
Publisher: SPIE-International Society for Optical Engineering
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 644
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Book Description
Author: Giovanna Cavazzini
Publisher: BoD – Books on Demand
ISBN: 9535106252
Category : Science
Languages : en
Pages : 402
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Book Description
The Particle Image Velocimetry is undoubtedly one of the most important technique in Fluid-dynamics since it allows to obtain a direct and instantaneous visualization of the flow field in a non-intrusive way. This innovative technique spreads in a wide number of research fields, from aerodynamics to medicine, from biology to turbulence researches, from aerodynamics to combustion processes. The book is aimed at presenting the PIV technique and its wide range of possible applications so as to provide a reference for researchers who intended to exploit this innovative technique in their research fields. Several aspects and possible problems in the analysis of large- and micro-scale turbulent phenomena, two-phase flows and polymer melts, combustion processes and turbo-machinery flow fields, internal waves and river/ocean flows were considered.
Author: F. N. Weber (Jr.)
Publisher:
ISBN:
Category : Laser Doppler velocimeter
Languages : en
Pages : 38
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Book Description
Author: Markus Raffel
Publisher: Springer
ISBN: 3662036371
Category : Science
Languages : en
Pages : 267
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Book Description
Results from several applications of particle image velocimetry (PIV) to unsteady flows at a laboratory scale have been published, and commercial products are now available for more general laboratory use, but for certain industrially important applications, reliable equipment is often available only from in-house research and development teams. This PIV handbookis intended to transfer know-how from PIV development laboratories to end-users in industry and universities. The book discusses the scientific and technical aspects required to set up a PIV system, allows users to assess the problems involved in the application of PIV, and enables them to design, optimize, and use PIV systems to meet their special needs.
Author: H.-E. Albrecht
Publisher: Springer
ISBN: 9783662051665
Category : Technology & Engineering
Languages : en
Pages : 738
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Book Description
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.
