Expanding Laser Diagnostics in Non-seeded Compressible Flow Research PDF Download

Author: Renatus Antonius Leonardus Tolboom
Publisher:
ISBN: 9789090161938
Category :
Languages : en
Pages : 294

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Author: Alan C. Eckbreth
Publisher: CRC Press
ISBN: 9789056995324
Category : Technology & Engineering
Languages : en
Pages : 636

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Focusing on spectroscopically-based, spatially-precise, laser techniques for temperature and chemical composition measurements in reacting and non-reacting flows, this book makes these powerful and important new tools in combustion research

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 0

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Advanced laser diagnostics have been developed to study the fundamentals of supersonic flows for scramjet applications. Filtered Rayleigh scattering and planar laser-induced fluorescence (PLIF) techniques were developed and applied for measuring temperature and species in reacting and nonreacting flows. Fundamental studies of a cavity flame-holder in reacting and nonreacting supersonic flows were conducted. Several cavity-configuration and fueling schemes were employed, and combustion performance was documented. Raman scattering was utilized to measure the time-averaged equivalence ratio of cavity fueling. OH-PLIF was used to mark the reaction zone of the combustion and aid the optimization of fueling. An isolator of rectangular cross section with adjustable divergence angles has been evaluated for different inlet Mach numbers. Shock structures and fluctuations of shock position were also identified at various Mach numbers, divergence angles, and pressure ratios. The potential application of a plasma torch as an alternative ignition source for the scramjet combustor was also investigated through experimental and CFD studies. Maintenance and upgrade of the test facility and support of testing were performed.

Author: C Arcoumanis
Publisher: CRC Press
ISBN: 1482263181
Category : Science
Languages : en
Pages : 266

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From the automotive industry to blood flow monitoring, optical techniques and laser diagnostics are becoming integral parts in engineering and medical instrumentation. Written by leading global experts from industry, academic groups, and laboratories, this volume provides an international perspective on both existing applications and leading-edge r

Author:
Publisher:
ISBN:
Category : Optics
Languages : en
Pages : 900

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Author: Gregory C. Herring
Publisher: BiblioGov
ISBN: 9781289237448
Category :
Languages : en
Pages : 24

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Two experiments were conducted to test whether optical methods, which rely on laser beam coherence, would be viable for off-body flow measurement in high-density, compressible-flow wind tunnels. These tests measured the effects of large, unsteady density gradients on laser diagnostics like laser-induced thermal acoustics (LITA). The first test was performed in the Low Speed Aeroacoustics Wind Tunnel (LSAWT) of NASA Langley Research Center's Jet Noise Laboratory (JNL). This flow facility consists of a dual-stream jet engine simulator (with electric heat and propane burners) exhausting into a simulated flight stream, reaching Mach numbers up to 0.32. A laser beam transited the LSAWT flow field and was imaged with a high-speed gated camera to measure beam steering and transverse mode distortion. A second, independent test was performed on a smaller laboratory jet (Mach number

Author: National Aeronautics and Space Adm Nasa
Publisher: Independently Published
ISBN: 9781794387300
Category : Science
Languages : en
Pages : 36

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Book Description
Two experiments were conducted to test whether optical methods, which rely on laser beam coherence, would be viable for off-body flow measurement in high-density, compressible-flow wind tunnels. These tests measured the effects of large, unsteady density gradients on laser diagnostics like laser-induced thermal acoustics (LITA). The first test was performed in the Low Speed Aeroacoustics Wind Tunnel (LSAWT) of NASA Langley Research Center's Jet Noise Laboratory (JNL). This flow facility consists of a dual-stream jet engine simulator (with electric heat and propane burners) exhausting into a simulated flight stream, reaching Mach numbers up to 0.32. A laser beam transited the LSAWT flow field and was imaged with a high-speed gated camera to measure beam steering and transverse mode distortion. A second, independent test was performed on a smaller laboratory jet (Mach number

Author: Bronius Simovich Rinkevichius
Publisher: Begell House Publishers
ISBN: 9781567000733
Category : Technology & Engineering
Languages : en
Pages : 341

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Book Description
This monograph is intended for engineers and scientists concerned with laser-aided investigations, as well as students and post-graduate students. It describes the methods of laser diagnostics of fluid and gas flows that are currently finding wide applications in aero and hydrodynamic studies, power engineering, space and aircraft industries, chemical engineering, metallurgy, biology, environmental sciences, and much more. Chapters range from fundamental laws of optics as they relate to laser beams, through laser radiation, scattering, to laser diagnostics methods.

Author: Yoshihiro Deguchi
Publisher: CRC Press
ISBN: 9780367445928
Category :
Languages : en
Pages : 302

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Book Description
Tighter regulations of harmful substances such as NOx, CO, heavy metals, particles, emissions from commercial plants and automobiles reflect a growing demand for lowering the anthropogenic burdens on the environment. It is equally important to monitor controlling factors to improve the operation of industrial machinery and plants. Among the many methods for doing this, laser diagnostics stands out. Taking a practical approach, Industrial Applications of Laser Diagnostics discusses how to apply laser diagnostics to engines, gas turbines, thermal and chemical plant systems, and disposal facilities. It also briefly discusses their growing application in biochemical fields. The book introduces the guidelines for industrial applications of laser diagnostics, briefly describes the main components of laser diagnostics systems, and summarizes application codes of laser diagnostics to industrial systems. The author them discusses laser induced fluorescence, laser induced breakdown spectroscopy, spontaneous Raman spectroscopy and CARS, tunable diode laser absorption spectroscopy, and time of flight mass spectroscopy. He provides theoretical explanations and complex equations, which are usually main inhibitors, in appendices or indicates them with citations. Although the diagnostics have been well documented in the scientific literature, and the techniques in journals, the applications have not. And usually these books are comprehensible only to those in this field, not researchers from other fields or from industry. Until now. Incorporating a plethora of real life industrial examples and applications, this text underscores the real potential for these techniques in industrial applications.

Author:
Publisher: Cuvillier Verlag
ISBN: 3736902107
Category : Science
Languages : de
Pages : 158

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