Recent Advances in Laser-based Combustion Diagnostics PDF Download
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Author: R. K. Hanson
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: R. K. Hanson
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: J. Doi
Publisher:
ISBN:
Category :
Languages : en
Pages : 502
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Author: Hua Zhao
Publisher: SAE International
ISBN: 0768077664
Category : Technology & Engineering
Languages : en
Pages : 373
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Book Description
The increasing concern about CO2 emissions and energy prices has led to new CO2 emission and fuel economy legislation being introduced in world regions served by the automotive industry. In response, automotive manufacturers and Tier-1 suppliers are developing a new generation of internal combustion (IC) engines with ultra-low emissions and high fuel efficiency. To further this development, a better understanding is needed of the combustion and pollutant formation processes in IC engines. As efficiency and emission abatement processes have reached points of diminishing returns, there is more of a need to make measurements inside the combustion chamber, where the combustion and pollutant formation processes take place. However, there is currently no good overview of how to make these measurements. Based on the author’s previous SAE book, Engine Combustion Instrumentation and Diagnostics, this book focuses on laser-based optical techniques for combustion flows and in-cylinder measurements. Included are new chapters on optical engines and optical equipment, case studies, and an updated description of each technique. The purpose of this book is to provide, in one publication, an introduction to experimental techniques that are best suited for in-cylinder engine combustion measurements. It provides sufficient details for readers to set up and apply these techniques to IC engines and combustion flows.
Author: Alan C. Eckbreth
Publisher: CRC Press
ISBN: 9782884492256
Category : Technology & Engineering
Languages : en
Pages : 632
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Author: Kenneth K. Kuo
Publisher: AIAA
ISBN: 9781600864223
Category : Combustion
Languages : en
Pages : 542
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 12
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Book Description
This is the final report on the development of a new laser-based combustion diagnostic for the quantitative measurement of both major and minor species in high-pressure flames. The technique, Asynchronous Optical Sampling (ASOPS), is a state-of-the-art improvement in picosecond pump/probe spectroscopy. A method is presented for vastly improving the output of the synchronously mode-locked dye laser systems. The beat frequency is increased to 155.7 kHz. Subnanosecond excited-state lifetimes for Na are obtained with only 128 averages, for the first time allowing data to be obtained within the time scale of turbulence. The first quantitative evaluation of the ASOPS technique in a flame environment is presented. Pump/probe spectroscopy, Laser diagnostics, Combustion, Stimulated emission.
Author: Gilbert J. Santoro
Publisher:
ISBN:
Category : Combustion
Languages : en
Pages : 52
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Author: Alan C. Eckbreth
Publisher: CRC Press
ISBN: 9789056995324
Category : Technology & Engineering
Languages : en
Pages : 636
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Book Description
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:
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Category :
Languages : en
Pages :
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Book Description
Non-intrusive laser diagnostics for the spatially and temporally resolved measurement of temperature, chemical composition, and flow parameters have emerged over the last few decades as major tools for the study of both fundamental and applied combustion science. Many of the important advances in the field can be attributed to the discussions and ideas emanating from this meeting. This conference, originating in 1981 and held biennially, focuses on laser-based methods for measurement of both macroscopic parameters and the underlying microscale physical and chemical processes. Applications are discussed primarily to elucidate new chemical and physical issues and/or interferences that need to be addressed to improve the accuracy and precision of the various diagnostic approaches or to challenge the community of diagnosticians to invent new measurement techniques. Combustion environments present special challenges to the optical diagnostics community as they address measurements relevant to turbulence, spray and mixture formation, or turbulence/chemistry interactions important in practical combustion systems as well as fundamental chemical reactions in stationary laminar flames. The diagnostics considered may be generally classed as being incoherent, where the signals are radiated isotropically, or coherent, where the signals are generated in a directed, beam-like fashion. Both of the foregoing may employ either electronic or Raman resonance enhancement or a combination of both. Prominent incoherent approaches include laser induced fluorescence (LIF), spontaneous Raman scattering, Rayleigh scattering, laser induced incandescence, molecular flow tagging, and Mie scattering and their two- and three-dimensional imaging variants. Coherent approaches include coherent anti-Stokes Raman scattering (CARS), degenerate four wave mixing (DFWM), polarization spectroscopy (PS), laser induced grating spectroscopy (LIGS) and laser-based absorption spectroscopy. Spectroscopic modelling and validation are key elements to extract accurate parameter measurements and discussions focusing on key energy transfer processes, collisional models, and lineshapes. The properties and behaviour of lasers, optical arrangements and techniques, spectrally-selective and dispersive instruments and detectors are also important determinants of successful measurements and are discussed in detail. Recent developments in the conference have highlighted the application of techniques developed for combustion research that find application in other areas such as biological, atmospheric, chemical engineering or plasma processes.
Author: KoHse-HoingHaus
Publisher: Taylor & Francis US
ISBN: 9781560329381
Category : Technology & Engineering
Languages : en
Pages : 748
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Book Description
The editors have assembled a world-class group of contributors who address the questions the combustion diagnostic community faces. They are chemists who identify the species to be measured and the interfering substances that may be present; physicists, who push the limits of laser spectroscopy and laser devices and who conceive suitable measurement schemes; and engineers, who know combustion systems and processes. This book assists in providing guidance for the planning of combustion experiments, in judging research strategies and in conceiving new ideas for combustion research. It provides a snapshot of the available diagnostic methods and thier typical applications from the perspective of leading experts in the field.
