An Experimental Study on the Laminar Burning Velocities and Stability Boundaries of Outwardly Propagating Spherical Flames PDF Download

Author: Grunde Jomaas
Publisher:
ISBN:
Category :
Languages : en
Pages : 310

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Author: Oh Chae Kwon
Publisher:
ISBN:
Category :
Languages : en
Pages : 536

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Author: Norbert Peters
Publisher: Springer-Verlag
ISBN: 3663140067
Category : Mathematics
Languages : de
Pages : 211

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Author: Donald C Curran
Publisher: Hassell Street Press
ISBN: 9781013616754
Category :
Languages : en
Pages : 106

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This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

Author: Corey Martin Dunsky
Publisher:
ISBN:
Category :
Languages : en
Pages : 642

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Author: Donald C. Curran
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 86

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Book Description

Author: Forman A. Williams
Publisher: CRC Press
ISBN: 0429973683
Category : Science
Languages : en
Pages : 549

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Book Description
Combustion Theory delves deeper into the science of combustion than most other texts and gives insight into combustions from a molecular and a continuum point of view. The book presents derivations of the basic equations of combustion theory and contains appendices on the background of subjects of thermodynamics, chemical kinetics, fluid dynamics, and transport processes. Diffusion flames, reactions in flows with negligible transport and the theory of pre-mixed flames are treated, as are detonation phenomena, the combustion of solid propellents, and ignition, extinction, and flamibility pehnomena.

Author: Combustion Institute (U.S.) Eastern States Section. Fall Technical Meeting
Publisher:
ISBN:
Category : Combustion
Languages : en
Pages : 540

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Author: M. D. Fox
Publisher:
ISBN:
Category : Flame
Languages : en
Pages : 33

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Book Description
Current concepts of flame propagation in premixed, turbulent gas streams are examined. This leads to the conclusion that the link between theory and experiment is entirely inadequate and incapable of improvement by existing methods. A series of new methods is implemented in an attempt to short-circuit the unprofitable chain of hypothesis and experiment which has hampered the identification of dubious steps. Methods of introducing uniform turbulence at relatively slow flows and improvements in light sources allow analysis of the approach flow by photographing particles illuminated by an interrupted Tyndall beam. Three new optical deflection methods are used to give a measure of the randomness of flame-front orientation, of the time-mean structure of the flame and of the instantaneous shape of the corrugated front. It is found that this corrugated surface propagates at a velocity considerably in excess of the normal laminar burning velocity. Quantitative analysis of the frequency of "peaks" and "valleys" on the surface, together with comparative data from the apex of laminar flames, suggests an explanation in terms of the effects of curvature and, secondarily, of the influence of small scale turbulence.

Author: Ziyu Wang
Publisher:
ISBN:
Category : Combustion gases
Languages : en
Pages : 157

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Book Description
"Alternative fuels and alternative refrigerants have attracted a lot of attention as many are deemed to be environmentally friendly. Consequently, the combustion behavior of fuels such as Syngas, Biogas, Liquified petroleum gas (LPG), and Gas to liquid (GTL) premixed flames were studied. In this investigation, the laminar burning speed and the flame instability of alternative fuels and refrigerants and different diluents (Exhaust gas recirculation (EGR), Helium, CO2) mixtures were evaluated both experimentally and numerically. Experiments were conducted using a spherical vessel to measure laminar burning speed and a cylindrical vessel to investigate flame instability. The cylindrical vessel is set up in a Z-shape Schlieren system, coupled with a high-speed CMOS camera that is used to capture evolutionary behavior of flames at up to 40,000 frames per second (around 2000 frames per second in general case). Upon ignition, the pressure rises as a function of time, during flame propagation in the spherical chamber, is the primary input of a multi-shell thermodynamic model, used to calculate the laminar burning speed for smooth flames. Power law correlations were developed for experimental burning speed results of different combustible mixtures over a wide range of equivalence ratios, temperatures, pressures, and diluent concentrations. For the onset of flame instability, a correlation for the ratio of critical pressure to initial pressure of syngas/air/diluent flames over a wide range of initial temperatures, initial pressures, equivalence ratios, diluent concentrations, and hydrogen percentages were developed. Kinetics simulations calculated by 1-D steady state flame code from CANTERA were compared with various experimental burning speed results"--Author's abstract.