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Author: Adrien Piton
Publisher: Presses Academiques Francophones
ISBN: 9783841635501
Category :
Languages : fr
Pages : 244
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Book Description
La modélisation des moteurs à combustion interne nécessite une compréhension fine de la vidange et du remplissage en air ou en mélange des cylindres. Des essais en condition stationnaire sur une culasse issue d'un moteur produit en série sont effectués. L'analyse de ces résultats est faite au regard des trois principaux modèles de soupape: Barré de StVenant, Benson et Blair. L'étude des hypothèses de ces trois modèles ayant montré leur équivalence en écoulement sortant d'une tubulure, l'accent est mis sur l'impact des différentes hypothèses sur les résultats expérimentaux. Des essais instationnaires sont ensuite effectués. Ces données sont ensuite comparées à des résultats de simulation. Les différences entre les trois modèles apparaissent et sont analysées. Enfin, l'hypothèse d'absence de transferts thermiques est remise en cause. Des essais à haute température sont pour cela effectués. Les conditions d'essais ne permettant pas quantifier correctement ces transferts thermiques, un modèle d'écoulement au travers des soupapes prenant en compte les transferts thermiques est proposé. Son étude permet d'évaluer l'impact de ces transferts sur la vidange et le remplissage du cylindre.
Author: Adrien Piton
Publisher: Presses Academiques Francophones
ISBN: 9783841635501
Category :
Languages : fr
Pages : 244
Get Book Here
Book Description
La modélisation des moteurs à combustion interne nécessite une compréhension fine de la vidange et du remplissage en air ou en mélange des cylindres. Des essais en condition stationnaire sur une culasse issue d'un moteur produit en série sont effectués. L'analyse de ces résultats est faite au regard des trois principaux modèles de soupape: Barré de StVenant, Benson et Blair. L'étude des hypothèses de ces trois modèles ayant montré leur équivalence en écoulement sortant d'une tubulure, l'accent est mis sur l'impact des différentes hypothèses sur les résultats expérimentaux. Des essais instationnaires sont ensuite effectués. Ces données sont ensuite comparées à des résultats de simulation. Les différences entre les trois modèles apparaissent et sont analysées. Enfin, l'hypothèse d'absence de transferts thermiques est remise en cause. Des essais à haute température sont pour cela effectués. Les conditions d'essais ne permettant pas quantifier correctement ces transferts thermiques, un modèle d'écoulement au travers des soupapes prenant en compte les transferts thermiques est proposé. Son étude permet d'évaluer l'impact de ces transferts sur la vidange et le remplissage du cylindre.
Author: Denise Jodelet
Publisher: Univ of California Press
ISBN: 9780520078666
Category : Psychology
Languages : en
Pages : 324
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Book Description
A striking account of a colony for the mentally ill that forces a reconsideration of madness in society. What happens when the mentally ill are not isolated from society but are instead welcomed into it and invited to take a place in the fabric of the community? Are fear and rejection replaced by the understanding and sympathy often engendered by familiarity? Or are the barriers between the sane and the mad only strengthened? We have experienced a taste of this scenario in the U.S. in the last decade with the new emphasis on de-institutionalization, but Denise Jodelet takes us to an extraordinary community in France where the mentally ill have assumed a visible and prominent role for more than seventy years. The small French town of Ainay-le-Ch�teau and its environs are the site of a "family colony" for men, established in 1900. Here the patients ("lodgers") live with ordinary families ("foster parents"), hold jobs, and are free to move about the countryside. Jodelet's chronicle of daily life in the colony is made rich and vivid by extensive ethnographic material as she unravels a complex set of relationships, ultimately finding that while some of the barriers between the "other" and the larger society have been overcome, new ones have arisen in their place. This unique social experiment provides invaluable social and cultural insights, illuminating many fundamental issues in psychology, psychiatry, and sociology.
Author: Shaoming Zou
Publisher: Business Expert Press
ISBN: 1606490095
Category : Business & Economics
Languages : en
Pages : 372
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Book Description
If you find that the domestic market is saturated, exporting is a very important strategic initiative, and you need this book to understand everything inherent in export marketing. This book describes the steps necessary to achieve success in export marketing. It is a step-by-step guide to the art and science of export marketing, from initial discovery to researching new markets, to the financial aspects, to managing ongoing operations.
Author: Alain Hébert
Publisher: Presses inter Polytechnique
ISBN: 2553014368
Category : Nuclear physics
Languages : en
Pages : 426
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Book Description
Author: James J. Duderstadt
Publisher: John Wiley & Sons
ISBN:
Category : Science
Languages : en
Pages : 630
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Book Description
Problems after each chapter
Author: Yousry Azmy
Publisher: Springer Science & Business Media
ISBN: 9048134110
Category : Technology & Engineering
Languages : en
Pages : 476
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Book Description
Nuclear engineering has undergone extensive progress over the years. In the past century, colossal developments have been made and with specific reference to the mathematical theory and computational science underlying this discipline, advances in areas such as high-order discretization methods, Krylov Methods and Iteration Acceleration have steadily grown. Nuclear Computational Science: A Century in Review addresses these topics and many more; topics which hold special ties to the first half of the century, and topics focused around the unique combination of nuclear engineering, computational science and mathematical theory. Comprising eight chapters, Nuclear Computational Science: A Century in Review incorporates a number of carefully selected issues representing a variety of problems, providing the reader with a wealth of information in both a clear and concise manner. The comprehensive nature of the coverage and the stature of the contributing authors combine to make this a unique landmark publication. Targeting the medium to advanced level academic, this book will appeal to researchers and students with an interest in the progression of mathematical theory and its application to nuclear computational science.
Author: Serge Marguet
Publisher: Springer
ISBN: 3319595601
Category : Science
Languages : en
Pages : 1462
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Book Description
This comprehensive volume offers readers a progressive and highly detailed introduction to the complex behavior of neutrons in general, and in the context of nuclear power generation. A compendium and handbook for nuclear engineers, a source of teaching material for academic lecturers as well as a graduate text for advanced students and other non-experts wishing to enter this field, it is based on the author’s teaching and research experience and his recognized expertise in nuclear safety. After recapping a number of points in nuclear physics, placing the theoretical notions in their historical context, the book successively reveals the latest quantitative theories concerning: • The slowing-down of neutrons in matter • The charged particles and electromagnetic rays • The calculation scheme, especially the simplification hypothesis • The concept of criticality based on chain reactions • The theory of homogeneous and heterogeneous reactors • The problem of self-shielding • The theory of the nuclear reflector, a subject largely ignored in literature • The computational methods in transport and diffusion theories Complemented by more than 400 bibliographical references, some of which are commented and annotated, and augmented by an appendix on the history of reactor physics at EDF (Electricité De France), this book is the most comprehensive and up-to-date introduction to and reference resource in neutronics and reactor theory.
Author: Marilynn B. Brewer
Publisher: Wiley-Blackwell
ISBN: 9781405110679
Category : Psychology
Languages : en
Pages : 368
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Book Description
Applied Social Psychology is a collection of readings from the four-volume set of Blackwell Handbooks of Social Psychology that examine the applications of social psychological theory and research in various domains of personal, institutional, and societal well-being. Collects readings from the four-volume set of Blackwell Handbooks of Social Psychology and includes introductions by two world-renowned researchers. Examines the applications of social psychological theory and research in various domains of personal, institutional, and societal well-being. Illustrates how social psychological analyses of individual, interpersonal, and group level processes have contributed to important areas of applied psychology.
Author: G. R. Semin
Publisher: Sage Publications (CA)
ISBN:
Category : Psychology
Languages : en
Pages : 264
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Book Description
The last decade has seen a growing interest in broadly shared understandings of culture, known as indigenous psychologies, with lay perspectives being seen as critical to understanding this area. This inter-disciplinary volume looks at the problem of lay theories.
Author: Kum-Kum Bhavnani
Publisher: Cambridge University Press
ISBN: 0521380448
Category : Psychology
Languages : en
Pages : 234
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Book Description
Originally published in 1991, this study examines the views of politics presented by young people in contemporary Britain. Bhavnani argues that previous studies of youth and youth culture were limited by too great a reliance on simple survey techniques, and by lack of attention to conceptions of politics amongst young people, and to politics as a series of lived relationships rather than a set of external objects. Instead, she uses ethnographic approaches and open-response interviewing within the broad theoretical framework of social representations. The political is taken to refer to the ways in which people regulate, and attempt to regulate with a view to challenging, unequal social relationships. Within this the specific issues examined are employment, unemployment, youth training schemes, democracy and voting, racism, and marriage. Bhavnani's analysis, organised by themes such as disposable income and social and personal control, tackles questions of power in the research process; and a notion of discursive configurations as distinct from social representations.
