Simulation des grandes échelles de la combustion turbulente avec chimie détaillée tabulée
Simulation des grandes échelles de la combustion turbulente avec chimie détaillée tabulée

Author: Alexandre Naudin

Publisher:

Published: 2008

Total Pages: 251

ISBN-13:

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L'objectif est d'étudier un modèle de combustion turbulente pour la simulation des grandes échelles (LES), combinant des fonctions de densité de probabilité pour la turbulence (PCM) avec une tabulation chimique détaillée (FPI). La méthode PCM-FPI est validée dans le code de calcul AVBP avec des flammes laminaires de prémélange Méthane/air et une cinétique détaillée. Son couplage optimal est obtenu par la fermeture des taux de réaction des espèces, tabulés ou recombinés. La problématique de réduction du nombres d'espèces est résolue par une sélection basée sur des critères massique, calorifique et énergétique. La phénoménologie des écoulements non-réactifs en giration présentée ensuite permet d'introduire une méthode de raffinement de maillage, ainsi qu'une estimation de la convergence axisymétrique. Enfin, PCM-PFI est validée avec des simulations de configurations académiques de combustion prémélangée turbulente : deux écoulements en giration et l'auto-inflammation d'un jet d'hydrogène.

Modélisation de la Combustion Turbulente Avec Chimie Détaillée Tabulée
Modélisation de la Combustion Turbulente Avec Chimie Détaillée Tabulée

Author: Alexandre Naudin

Publisher: Omniscriptum

Published: 2011-04

Total Pages: 284

ISBN-13: 9786131572265

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L'accroissement de la consommation mondiale en nergie, l' puisement des ressources fossiles, et la d gradation irr versible des cosyst mes par la pollution d finissent le contexte actuel des tudes autour de la combustion. Un d fi majeur consiste en effet am liorer l'efficacit des r acteurs industriels: la mod lisation de la combustion turbulente avec l'aide de l'outil informatique par la Simulation des Grandes Echelles (LES) est une r ponse int ressante. L'objectif de ces travaux est d' tudier un mod le de combustion turbulente adapt la LES, qui soit capable de combiner des fonctions de densit de probabilit pour la turbulence (PCM) avec une tabulation chimique d taill e (FPI) pour une pr diction optimale des polluants. La m thode PCM-FPI est valid e dans le code de calcul AVBP avec des flammes laminaires d'un pr m lange M thane/Air. La probl matique de r duction du nombre d'esp ces est r solue par une s lection bas e sur des crit res massique et nerg tique. Le mod le PCM-FPI est finalement valid avec des simulations de configurations acad miques de combustion pr m lang e turbulente: deux coulements en giration et l'auto-inflammation d'un jet de Dihydrog ne.

Numerical Combustion
Numerical Combustion

Author: Alain Dervieux

Publisher: Springer

Published: 2014-03-12

Total Pages: 483

ISBN-13: 9783662137482

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Interest in numerical combustion is growing among applied mathematicians, physicists, chemists, engine manufacturers and many industrialists. This proceedings volume contains nine invited lectures and twenty seven contributions carefully selected by the editors. The major themes are numerical simulation of transsonic and supersonic combustion phenomena, the study of supersonic reacting mixing layers, and turbulent combustion. Emphasis is laid on hyperbolic models and on numerical simulations of hydrocarbon planes with a complete set of chemical reactions carried out in two-dimensional geometries as well as on complex reactive flow simulations.

Data Analysis for Direct Numerical Simulations of Turbulent Combustion
Data Analysis for Direct Numerical Simulations of Turbulent Combustion

Author: Heinz Pitsch

Publisher: Springer Nature

Published: 2020-05-28

Total Pages: 294

ISBN-13: 3030447189

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This book presents methodologies for analysing large data sets produced by the direct numerical simulation (DNS) of turbulence and combustion. It describes the development of models that can be used to analyse large eddy simulations, and highlights both the most common techniques and newly emerging ones. The chapters, written by internationally respected experts, invite readers to consider DNS of turbulence and combustion from a formal, data-driven standpoint, rather than one led by experience and intuition. This perspective allows readers to recognise the shortcomings of existing models, with the ultimate goal of quantifying and reducing model-based uncertainty. In addition, recent advances in machine learning and statistical inferences offer new insights on the interpretation of DNS data. The book will especially benefit graduate-level students and researchers in mechanical and aerospace engineering, e.g. those with an interest in general fluid mechanics, applied mathematics, and the environmental and atmospheric sciences.

High-pressure Flows for Propulsion Applications
High-pressure Flows for Propulsion Applications

Author: Josette Bellan

Publisher:

Published: 2020

Total Pages: 0

ISBN-13: 9781624105807

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Describes observations and modelling of high-pressure flows encountered in aeronautics and astronautics. They have been selected to present the current understanding of high-pressure flows. Experimental, theoretical and numerical studies are all represented. Fundamental investigations are presented first, followed by practical studies.

Transport Theory
Transport Theory

Author: James J. Duderstadt

Publisher: John Wiley & Sons

Published: 1979

Total Pages: 630

ISBN-13:

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Problems after each chapter

Nuclear Computational Science
Nuclear Computational Science

Author: Yousry Azmy

Publisher: Springer Science & Business Media

Published: 2010-04-15

Total Pages: 476

ISBN-13: 9048134110

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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.

The Physics of Nuclear Reactors
The Physics of Nuclear Reactors

Author: Serge Marguet

Publisher: Springer

Published: 2018-02-26

Total Pages: 1462

ISBN-13: 3319595601

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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.