Combustion In High Speed Flows
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Combustion In High Speed Flows
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Author : John Buckmaster
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Combustion In High Speed Flows written by John Buckmaster and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Technology & Engineering categories.
This volume contains the proceedings of the Workshop on Com bustion, sponsored by the Institute for Computer Applications in Science and Engineering (ICASE) and the NASA Langley Research Center (LaRC). It was held on October 12-14, 1992, and was the sec ond workshop in the series on the subject. The first was held in 1989, and its proceedings were published by Springer-Verlag under the title "Major Research Topics in Combustion," edited by M. Y. Hussaini, A. Kumar, and R. G. Voigt. The focus of the second workshop was directed towards the development, analysis, and application of basic models in high speed propulsion of particular interest to NASA. The exploration of a dual approach combining asymptotic and numerical methods for the analysis of the models was particularly encouraged. The objectives of this workshop were i) the genesis of models that would capture or reflect the basic pllysical phenomena in SCRAMJETs and/or oblique detonation-wave engines (ODWE), and ii) the stimulation of a greater interaction between NASA exper imental research community and the academic community. The lead paper by D. Bushnell on the status and issues of high speed propulsion relevant to both the SCRAMJET and the ODWE parallels his keynote address which set the stage of the workshop. Following the lead paper were five technical sessions with titles and chairs: Experiments (C. Rogers), Reacting Free Shear Layers (C. E. Grosch), Detonations (A. K. Kapila), Ignition and Struc ture (J. Buckmaster), and Unsteady Behaviour ('1'. L. Jackson).
Theories Of Turbulent Combustion In High Speed Flows
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Author : Paul A. Libby
language : en
Publisher:
Release Date : 1991
Theories Of Turbulent Combustion In High Speed Flows written by Paul A. Libby and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Combustion categories.
Theories Of Turbulent Combustion In High Speed Flows
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Author :
language : en
Publisher:
Release Date : 1995
Theories Of Turbulent Combustion In High Speed Flows written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with categories.
This research involved theoretical studies of the chemical and fluid-mechanical phenomena which make turbulent combustion in high-speed flows different from such combustion in low-speed flows. Finite-rate chemistry plays a significant role in high-speed flows because of the small ratios of flow times to chemical times. The studies addressed ignition and extinction phenomena in nonpremixed turbulent combustion of hydrogen-air systems by both numerical and asymptotic methods. Efforts were made to provide a firmer foundation for the modeling of high-speed turbulent reacting flows, to aid in the development of a formulation which gives results that can be compared with experiments on turbulent combustion. It was shown that turbulent combustion occurs in the reaction-sheet regime in hypersonic propulsion, and the correspondingly needed critical ignition and extinction conditions for hydrogen-air systems were determined from fundamentals.
Theories Of Turbulent Combustion In High Speed Flows
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Author :
language : en
Publisher:
Release Date : 1993
Theories Of Turbulent Combustion In High Speed Flows written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with categories.
This research involves theoretical studies of the chemical and fluid mechanical phenomena which make turbulent combustion in high-speed flows different from such combustion in low-speed flows. Finite-rate chemistry plays a significant role in high-speed flows because of the small ratios of flow times to chemical times. The studies address ignition and extinction phenomena in nonpremixed turbulent combustion of hydrogen-air systems by both numerical and asymptotic methods. Attention also is paid to effects of compressibility in high-speed turbulent combustion, with consideration given to interdispersal configurations of shocklets and flamelets. Efforts are made to provide a firmer foundation for the modeling of high-speed turbulent reacting flows, to aid in the development of a formulation which gives results that can be compared with experiments, on turbulent combustion ... Turbulent flames, Diffusion flames, Supersonic combustion.
Theories Of Turbulent Combustion In High Speed Flows
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Author : Kenneth Noel Corbett Bray
language : en
Publisher:
Release Date : 1995
Theories Of Turbulent Combustion In High Speed Flows written by Kenneth Noel Corbett Bray and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Aerodynamics categories.
Theories Of Turbulent Combustion In High Speed Flows
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Author :
language : en
Publisher:
Release Date : 1991
Theories Of Turbulent Combustion In High Speed Flows written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with categories.
Since Damkohler and Reynolds numbers over the range of conditions relevant to supersonic hydrogen-air combustion were found to be consistent with the combustion occurring in the reaction-sheet regime, detailed numerical integrations were performed on the structures of counterflow hydrogen-air diffusion flames, for pressure from 0.5 to 10 atm and air temperatures from 300 K to 1200 K, at a hydrogen temperature of 300 K. The results showed extinction to occur at high enough rates of strain in most cases, but no extinction for air temperatures above 1000 K. Nitrogen chemistry was shown to have a negligible effect, and reduced chemical-kinetic mechanisms were developed for simplifying the computations. The compound extinction strain rates were found to be in excellent agreement with newly performed experiments. Compressibility effects are being taken into account, and the results are being worked into methods for describing turbulent combustion in high-speed flows.
Pdf Methods For Combustion In High Speed Turbulent Flows
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Author : National Aeronautics and Space Adm Nasa
language : en
Publisher: Independently Published
Release Date : 2018-12-29
Pdf Methods For Combustion In High Speed Turbulent Flows written by National Aeronautics and Space Adm Nasa and has been published by Independently Published this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-12-29 with Science categories.
This report describes the research performed during the second year of this three-year project. The ultimate objective of the project is extend the applicability of probability density function (pdf) methods from incompressible to compressible turbulent reactive flows. As described in subsequent sections, progress has been made on: (1) formulation and modelling of pdf equations for compressible turbulence, in both homogeneous and inhomogeneous inert flows; and (2) implementation of the compressible model in various flow configurations, namely decaying isotropic turbulence, homogeneous shear flow and plane mixing layer. Pope, Stephen B. NASA-CR-199357, NAS 1.26:199357 NAG1-1542...
Theories Of Turbulent Combustion In High Speed Flows
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Author : Paul A. Libby
language : en
Publisher:
Release Date : 1995
Theories Of Turbulent Combustion In High Speed Flows written by Paul A. Libby and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Combustion categories.
Plasma Induced Ignition And Plasma Assisted Combustion In High Speed Flow
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Author :
language : en
Publisher:
Release Date : 2003
Plasma Induced Ignition And Plasma Assisted Combustion In High Speed Flow written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.
The paper is dedicated to the experimental demonstration of plasma technology abilities in the field of high speed combustion. It is doing in three principal directions: control of the structure and the parameters of the duct driven flows; the ignition of air fuel composition at low mean gas temperature; and the mixing intensification inflow.
Combustion In High Speed Air Flows
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Author : R. B. Edelman
language : en
Publisher:
Release Date : 1984
Combustion In High Speed Air Flows written by R. B. Edelman and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with categories.
The overall objective of this study is the analysis of reacting multiphase flows in advanced air-breathing propulsion systems. This work involves the formulation and evaluation of new theoretical descriptions of multiphase turbulent mixing and chemical kinetic phenomena in subsonic and supersonic air flows, and the generation of new experimental data on these phenomena. Topics studied include: Spray Modeling; Modeling of Boron Combustion Processes; Modeling of Ramjet Combustion Processes: and Modeling of the Ducted Rocket Combustion Process.