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Transport and Interfacial Kinetics in Multiphase Combustion Systems

Transport and Interfacial Kinetics in Multiphase Combustion Systems
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Total Pages: 0
Release: 1997
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A 3-year program of research oriented toward the formation/transport of combustion-generated particles is summarized. Using thermophoretic sampling/TEM image analysis techniques, both inorganic (alumina) and carbonaceous soot aggregates have been shown to exhibit quantitatively similar morphologies. A thermophoresis-based method for measuring absolute local soot volume fractions, fv, in flames has been successfully implemented (in both co-flow and counterflow laminar diffusion flames). Called Thermocouple Particle Densitometry (TPD), it exploits the laws governing thermocouple response to the thermophoretic soot deposition, as first suggested by Eisner and Rosner in 1985. This method is independent of (often unknown) soot optical properties, unbiased with respect to soot morphology and size distribution, and yields spatially resolved fv values directly even at low soot concentrations (below 0.1 ppm). Accordingly, while neither "instantaneous" or "non-intrusive", it is especially applicable to spatially non-uniform and/or lightly sooting laminar steady flames. Ancillary studies of the transport properties of soot aggregates, and particle impaction on cylinders in high-speed crossflow are also described/documented among the 30 cited references emerging from this program(Section 5).


Transport Phenomena and Interfacial Kinetics in Multiphase Combustion Systems

Transport Phenomena and Interfacial Kinetics in Multiphase Combustion Systems
Author:
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Total Pages: 48
Release: 1995
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ISBN:

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Rational pseudo-continuum methods were developed to predict the sintering kinetics, and the associated evolution of transport properties (eg., Brownian coagulation rate constant) for aggregated soot' particles (eg., Al(2)O3, TiO(2)) containing N (”1) primary particles in high temperature combustion gases. Results show a much weaker N-dependence of the total time required for "collapse" than N(1/3) (resulting from theories based on collapse at constant fractal dimension). Using both laser light scattering and thermophoretic sampling/TEM image analysis, comprehensive experiments were initiated to understand how changes in seed level, flame stoichiometry and strain rate influence the nature of the particles formed in the HTCRE Lab counterflow laminar diffusion flame burner. In ancillary theoretical studies, rational yet remarkably convenient methods were developed to predict the erosion rates of metal and ceramic solid surfaces (eg., circular cylinders, leading "edges") in abrasive, high-speed streams. It was found that metal targets "sharpen" while ceramic targets become "blunter" Yale HTCRE Lab experimental data motivated the development of quantitative methods for predicting/correlating the effects particle formation in CVD thermal boundary layers on the rate and surface roughness of vapor-deposited ceramic thin films. jg p.3.


รายงานผลการวิจัยเรื่องการศึกษาเปรียบเทียบการควบคุมระดับน้ําตาลในเลือดของผู้ป่วยนอกโรคเบาหวานก่อและหลังให้คําปรึกษาแนะนําโดยเภสัชกรโรงพยาบาลอุทัยธานี

รายงานผลการวิจัยเรื่องการศึกษาเปรียบเทียบการควบคุมระดับน้ําตาลในเลือดของผู้ป่วยนอกโรคเบาหวานก่อและหลังให้คําปรึกษาแนะนําโดยเภสัชกรโรงพยาบาลอุทัยธานี
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Release: 2001
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Transport and Interfacial Phenomena in Multi-Phase Combustion Systems

Transport and Interfacial Phenomena in Multi-Phase Combustion Systems
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Total Pages: 0
Release: 2000
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Results of a 3-year research program, leading to 17 archival papers, are summarized here, covering the four basic areas: (A) Laser-Induced Incandescence (LII) for soot measurements at atmospheric pressure and high pressures; (B).


Fundamentals of Turbulent and Multiphase Combustion

Fundamentals of Turbulent and Multiphase Combustion
Author: Kenneth Kuan-yun Kuo
Publisher: John Wiley & Sons
Total Pages: 914
Release: 2012-07-03
Genre: Science
ISBN: 111809929X

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Detailed coverage of advanced combustion topics from the author of Principles of combustion, Second Edition Turbulence, turbulent combustion, and multiphase reacting flows have become major research topics in recent decades due to their application across diverse fields, including energy, environment, propulsion, transportation, industrial safety, and nanotechnology. Most of the knowledge accumulated from this research has never been published in book form—until now. Fundamentals of Turbulent and Multiphase Combustion presents up-to-date, integrated coverage of the fundamentals of turbulence, combustion, and multiphase phenomena along with useful experimental techniques, including non-intrusive, laser-based measurement techniques, providing a firm background in both contemporary and classical approaches. Beginning with two full chapters on laminar premixed and non-premixed flames, this book takes a multiphase approach, beginning with more common topics and moving on to higher-level applications. In addition, Fundamentals of Turbulent and Multiphase Combustion: Addresses seven basic topical areas in combustion and multiphase flows, including laminar premixed and non-premixed flames, theory of turbulence, turbulent premixed and non-premixed flames, and multiphase flows Covers spray atomization and combustion, solid-propellant combustion, homogeneous propellants, nitramines, reacting boundary-layer flows, single energetic particle combustion, and granular bed combustion Provides experimental setups and results whenever appropriate Supported with a large number of examples and problems as well as a solutions manual, Fundamentals of Turbulent and Multiphase Combustion is an important resource for professional engineers and researchers as well as graduate students in mechanical, chemical, and aerospace engineering.


Transport Phenomena in Multiphase Systems

Transport Phenomena in Multiphase Systems
Author: Hamid Arastoopour
Publisher: Springer Nature
Total Pages: 380
Release: 2021-08-21
Genre: Technology & Engineering
ISBN: 3030685780

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This volume fills the need for a textbook presenting basic governing and constitutive equations, followed by several engineering problems on multiphase flow and transport that are not provided in current advanced texts, monographs, or handbooks. The unique emphasis of this book is on the sound formulation of the basic equations describing multiphase transport and how they can be used to design processes in selected industrially important fields. The clear underlying mathematical and physical bases of the interdisciplinary description of multiphase flow and transport are the main themes, along with advances in the kinetic theory for particle flow systems. The book may be used as an upper-level undergraduate or graduate textbook, as a reference by professionals in the design of processes that deal with a variety of multiphase systems, and by practitioners and experts in multiphase science in the area of computational fluid dynamics (CFD) at U.S. national laboratories, international universities, research laboratories and institutions, and in the chemical, pharmaceutical, and petroleum industries. Distinct from other books on multiphase flow, this volume shows clearly how the basic multiphase equations can be used in the design and scale-up of multiphase processes. The authors represent a combination of nearly two centuries of experience and innovative application of multiphase transport representing hundreds of publications and several books. This book serves to encapsulate the essence of their wisdom and insight, and:


Applications of Turbulent and Multiphase Combustion

Applications of Turbulent and Multiphase Combustion
Author: Kenneth Kuan-yun Kuo
Publisher: John Wiley & Sons
Total Pages: 602
Release: 2012-05-01
Genre: Science
ISBN: 1118127560

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A hands-on, integrated approach to solving combustion problems in diverse areas An understanding of turbulence, combustion, and multiphase reacting flows is essential for engineers and scientists in many industries, including power genera-tion, jet and rocket propulsion, pollution control, fire prevention and safety, and material processing. This book offers a highly practical discussion of burning behavior and chemical processes occurring in diverse materials, arming readers with the tools they need to solve the most complex combustion problems facing the scientific community today. The second of a two-volume work, Applications of Turbulent and Multiphase Combustion expands on topics involving laminar flames from Professor Kuo's bestselling book Principles of Combustion, Second Edition, then builds upon the theory discussed in the companion volume Fundamentals of Turbulent and Multiphase Combustion to address in detail cutting-edge experimental techniques and applications not covered anywhere else. Special features of this book include: Coverage of advanced applications such as solid propellants, burning behavior, and chemical boundary layer flows A multiphase systems approach discussing basic concepts before moving to higher-level applications A large number of practical examples gleaned from the authors' experience along with problems and a solutions manual Engineers and researchers in chemical and mechanical engineering and materials science will find Applications of Turbulent and Multiphase Combustion an indispensable guide for upgrading their skills and keeping up with this rapidly evolving area. It is also an excellent resource for students and professionals in mechanical, chemical, and aerospace engineering.


ARO and AFOSR Contractors Meeting in Chemical Propulsion, Held in Virginia Beach, Virginia on 3-6 June 1996

ARO and AFOSR Contractors Meeting in Chemical Propulsion, Held in Virginia Beach, Virginia on 3-6 June 1996
Author: David M. Mann
Publisher:
Total Pages: 302
Release: 1996
Genre: Chemical reactions
ISBN:

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Partial contents: Supercritical droplet behavior; Fundamentals of acoustic instabilities in liquid-propellant rockets; Modeling liquid jet atomization proceses; Liquid-propellant droplets dynamics and combustions in supercritical forced convective environments; Contributions of shear coaxial injectors to liquid rocket motor combustion instabilities; High pressure combustion studies under combustion driven oscillatory flow conditions; Droplet collision on liquid propellant combustion; Combustion and plumes; Development of a collisional radiative emission model for strongly nonequilibrium flows; Energy transfer processes in the production of excited states in reacting rocket flows; modeling nonequilibrium radiation in high altitude plumes; kinetics of plume radiation, and of HEDMs and metallic fuels combustion; Nonsteady combustion mechanisms of advanced solid propellants; Chemical mechanisms at the burning surface. p15