Droplets And Sprays Simple Models Of Complex Processes

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Droplets And Sprays Simple Models Of Complex Processes

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Author : Sergei S. Sazhin
language : en
Publisher: Springer Nature
Release Date : 2022-06-28

Droplets And Sprays Simple Models Of Complex Processes written by Sergei S. Sazhin and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-06-28 with Technology & Engineering categories.

This book acts as a guide to simple models that describe some of the complex fluid dynamics, heat/mass transfer and combustion processes in droplets and sprays. Attention is focused mainly on the use of classical hydrodynamics, and a combination of kinetic and hydrodynamic models, to analyse the heating and evaporation of mono- and multi-component droplets. The models were developed for cases when small and large numbers of components are present in droplets. Some of these models are used for the prediction of time to puffing/micro-explosion of composite water/fuel droplets — processes that are widely used in combustion devices to stimulate disintegration of relatively large droplets into smaller ones. The predictions of numerical codes based on these models are validated against experimental results where possible. In most of the models, droplets are assumed to be spherical; some preliminary results of the generalisation of these models to the case of non-spherical droplets, approximating them as spheroids, are presented.

Fluid Dynamics And Transport Of Droplets And Sprays

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Author : W. A. Sirignano
language : en
Publisher: Cambridge University Press
Release Date : 2010-01-11

Fluid Dynamics And Transport Of Droplets And Sprays written by W. A. Sirignano and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-01-11 with Science categories.

This book discusses the theoretical foundations of spray and droplet applications relevant to the technology for active control of sprays applied to new products and applications, improved product performance, cost reductions, and improved environmental outcomes. It also covers theory related to power and propulsion; materials processing and manufacturing technologies including droplet-based net form processing, coating, and painting; medication; pesticides and insecticides; and other consumer uses.

Computational Fluid Dynamics An Introduction For Mechanical Engineering Students

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Author : Sergei S. Sazhin
language : en
Publisher: Springer Nature
Release Date : 2025-07-01

Computational Fluid Dynamics An Introduction For Mechanical Engineering Students written by Sergei S. Sazhin and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2025-07-01 with Technology & Engineering categories.

This book introduces the basic concepts of the Computational Fluid Dynamics (CFD) of single-phase and multiphase flows. While the opening chapter focuses on the key equations that are solved numerically using classical CFD codes, the intention is not just to show these equations, but also to present key ideas of the calculus on which the formulations of these equations, and the analysis of other parts of the book, are based. Various approaches to the discretisation of conservation equations describing single-phase flows and the methods for solving the algebraic equations are demonstrated, including the details of some derivations usually omitted in classical textbooks. Also, the details of the SIMPLE algorithm is described. In contrast to most classical CFD books, this textbook also develops the basic principles of modelling multiphase flows, including approaches to modelling spray formation and droplet dynamics, analyses of flow instabilities, and droplet heating and evaporation. Completing the coverage, approaches to modelling the processes in multicomponent droplets, including puffing and micro-explosion in composite droplets, are discussed and the modelling of thermal radiation transfer using CFD codes is treated.

Energy And Combustion Science

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Author : N. A. Chigier
language : en
Publisher: Elsevier
Release Date : 2013-10-22

Energy And Combustion Science written by N. A. Chigier and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-10-22 with Technology & Engineering categories.

Energy and Combustion Science is a collection of papers that covers advancement in the field of energy and combustion science. The materials presented in the book are organized thematically into parts. The text first covers the issues, concerns, problems of the contemporary combustion technology. The subsequent parts of the book cover various areas in combustions science, namely, pollution, gas, oil, coal, and engines. Most of the articles in the book are concerned with the byproduct of fuel combustion. The text will be of great use to students, researchers, and practitioners of disciplines that deal with the energy and combustion technology.

Modeling Engine Spray And Combustion Processes

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Author : Gunnar Stiesch
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-06-29

Modeling Engine Spray And Combustion Processes written by Gunnar Stiesch 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 2013-06-29 with Computers categories.

The utilization of mathematical models to numerically describe the performance of internal combustion engines is of great significance in the development of new and improved engines. Today, such simulation models can already be viewed as standard tools, and their importance is likely to increase further as available com puter power is expected to increase and the predictive quality of the models is constantly enhanced. This book describes and discusses the most widely used mathematical models for in-cylinder spray and combustion processes, which are the most important subprocesses affecting engine fuel consumption and pollutant emissions. The relevant thermodynamic, fluid dynamic and chemical principles are summarized, and then the application of these principles to the in-cylinder processes is ex plained. Different modeling approaches for the each subprocesses are compared and discussed with respect to the governing model assumptions and simplifica tions. Conclusions are drawn as to which model approach is appropriate for a specific type of problem in the development process of an engine. Hence, this book may serve both as a graduate level textbook for combustion engineering stu dents and as a reference for professionals employed in the field of combustion en gine modeling. The research necessary for this book was carried out during my employment as a postdoctoral scientist at the Institute of Technical Combustion (ITV) at the Uni versity of Hannover, Germany and at the Engine Research Center (ERC) at the University of Wisconsin-Madison, USA.

Handbook Of Atomization And Sprays

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Author : Nasser Ashgriz
language : en
Publisher: Springer Science & Business Media
Release Date : 2011-02-18

Handbook Of Atomization And Sprays written by Nasser Ashgriz 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 2011-02-18 with Technology & Engineering categories.

Atomization and sprays are used in a wide range of industries: mechanical, chemical, aerospace, and civil engineering; material science and metallurgy; food; pharmaceutical, forestry, environmental protection; medicine; agriculture; meteorology and others. Some specific applications are spray combustion in furnaces, gas turbines and rockets, spray drying and cooling, air conditioning, powdered metallurgy, spray painting and coating, inhalation therapy, and many others. The Handbook of Atomization and Sprays will bring together the fundamental and applied material from all fields into one comprehensive source. Subject areas included in the reference are droplets, theoretical models and numerical simulations, phase Doppler particle analysis, applications, devices and more.

La Mod Lisation Multidimensionnelle Des Coulements Dans Les Moteurs

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Author : Thierry Baritaud
language : en
Publisher: Editions TECHNIP
Release Date : 1999

La Mod Lisation Multidimensionnelle Des Coulements Dans Les Moteurs written by Thierry Baritaud and has been published by Editions TECHNIP this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Technology & Engineering categories.

With an increasingly challenging commercial environment, and the need imposed by safety principles to reduce both fuel consumption and pollutant emissions, the development of new engines can now benefit from the advances of computational fluid dynamics. Engine CFD is a most challenging simulation problem. This is caused by the spread of time and space scales, the excursion amplitude of most parameters, the high quasi-cyclic unstationarity of engine flows, the importance of minor geometry details, the number of physical and chemical processes including turbulent combustion and multi-phase flows to model. However, engine CFD has now reached a state where it has become a widely used tool, not only for engine understanding, but also increasingly for engine design. Undoubtedly, laser diagnostics in optical access engines have also brought significant help.Contents: 1. State of the art of multi-dimensional modeling of engine reacting flows. 2. Simulation of the intake and compression strokes of a motored 4-valve SI engine with a finite element code. 3. A parallel, unstructured-mesh methodology for device-scale combustion calculations. 4. Large-eddy simulation of in-cylinder flows. 5. Simulation of engine internal flows using digital physics. 6. Automatic block decomposition of parametrically changing volumes. 7. Developments in spray modeling in diesel and direct-injection gasoline engines. 8. Cyto-fluid dynamic theory of atomization processes. 9. Influence of the wall temperature on the mixture preparation in DI gasoline engines. 10. Simulation of cavitating flows in diesel injectors. 11. Recent developments in simulations of internal flows in high pressure swirl injectors. 12. 3D simulation of DI diesel combustion and pollutant formation using a two-component reference fuel. 13. Modeling of NOx and soot formation in diesel combustion. 14. Multi-dimensional modeling of combustion and pollutants formation of new technology light duty diesel engines. 15. 3D modeling of combustion for DI-SI engines. 16. Combustion modeling with the G-equation. 17. Multi-dimensional modeling of the aerodynamic and combustion in diesel engines. 18. CFD aided development of a SI-DI engine. 19. CFD engine applications at FIAT research centre. 20. Application of a detailed emission model for heavy duty diesel engine simulations. 21. CFD based shape optimization of IC engine.

Environmental Implications Of Combustion Processes

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Author : Ishwar K. Puri
language : en
Publisher: CRC Press
Release Date : 1993-09-22

Environmental Implications Of Combustion Processes written by Ishwar K. Puri and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993-09-22 with Science categories.

Although there is a large body of research literature pertaining to the environmental implications of combustion processes, this book is the first to present a concise treatment of fundamental issues that can be quickly and easily used by entry-level researchers. The book is arranged so that it logically flows from fundamentals to pollutants, through theory, and on to modeling. Chapters cover combustion fundamentals, gaseous pollution, and heterogeneous combustion. Combustion theory in the form of Activation Energy Asymptotics is included for the lay reader, followed by a presentation of reduced mechanisms in the context of burning, a topic of environmental significance. Turbulent combustion modeling is also discussed.

Proceedings Of The U S Nuclear Regulatory Commission Water Reactor Safety Research Information Meeting

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Author :
language : en
Publisher:
Release Date : 1985

Proceedings Of The U S Nuclear Regulatory Commission Water Reactor Safety Research Information Meeting written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with Nuclear reactors categories.

Aerosols

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Author : George Hidy
language : en
Publisher: Elsevier
Release Date : 2012-12-02

Aerosols written by George Hidy and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-02 with Technology & Engineering categories.

Aerosols: An Industrial and Environmental Science is a comprehensive account of the science and technology of aerosols as well as their aerodynamic and physico-chemical properties. Measurement techniques and results are presented in terms of a framework of classical mechanics and macroscopic chemistry. This book is comprised of 10 chapters and begins with a discussion on the foundations of modern aerosol science and technology, followed by a review of the dynamic theory of aerosols as rigid spheres. The production of particle suspensions, the methods of particle sampling and measurement, and physical or chemical characterization are then considered, along with particle diffusion by Brownian motion, particle formation and growth, and coagulation processes. The formation of particle clouds is described by means of molecular agglomeration (condensation) processes, breakup and disintegration, and chemical reactions. The remaining chapters focus on several major applications of aerosol science in areas such as combustion, agriculture, and medicine. This monograph is intended to serve scientists and engineers who are concerned with the underlying principles of aerodynamic and physical chemical behavior of aerosols, and could also be used as a text for graduate students in specialized courses on aerosol or colloid chemistry, atmospheric processes, and chemical, mechanical, or environmental engineering.