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Author: JOCELYN.. BONJOUR
Publisher:
ISBN:
Category :
Languages : fr
Pages : 163
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Book Description
CE TRAVAIL CONCERNE L'AMELIORATION DES ECHANGES DE CHALEUR AU COURS DE L'EBULLITION DANS UN ESPACE CONFINE OU LE FLUIDE EST MIS EN MOUVEMENT SOUS L'EFFET DES FORCES DE GRAVITE (EFFET THERMOSIPHON). UNE ETUDE EXPERIMENTALE DE L'EBULLITION DU R113 DANS UN CANAL RECTANGULAIRE VERTICAL DONT LES COTES SONT OUVERTS A PERMIS DE METTRE EN EVIDENCE QUE, POUR LES FAIBLES FLUX, LE CONFINEMENT PEUT AUGMENTER LES COEFFICIENTS D'ECHANGE THERMIQUE JUSQU'A 300% PAR RAPPORT A L'EBULLITION LIBRE. CEPENDANT, AUX FORTS FLUX, IL ENTRAINE UNE DEGRADATION DES ECHANGES ET UNE DIMINUTION DU FLUX CRITIQUE. L'INFLUENCE DE LA PRESSION A EGALEMENT ETE ETUDIEE: UNE AUGMENTATION DE CELLE-CI AMELIORE LES ECHANGES MAIS NE PERMET PAS DE COMPENSER LA REDUCTION DU FLUX CRITIQUE DUE AU CONFINEMENT. UNE ANALYSE DES MECANISMES DE TRANSFERT DE CHALEUR INTERVENANT EN EBULLITION CONFINEE A ETE REALISEE. GRACE A LA TECHNIQUE DE L'ANEMOMETRIE A FIL CHAUD POUR LA DETECTION DES PHASES, TROIS REGIMES D'EBULLITION CONFINEE ONT ETE DETERMINES A PARTIR DE CRITERES OBJECTIFS (TAUX DE PRESENCE DE LA VAPEUR, TEMPS ET FREQUENCE DE PASSAGE DES BULLES,). UNE CARTE D'ECOULEMENTS ORIGINALE A ETE PROPOSEE AFIN D'IDENTIFIER CES DIFFERENTS REGIMES. LES LOIS D'ECHANGE THERMIQUE ETABLIES, LIEES A CES REGIMES, AINSI QUE LA CORRELATION PROPOSEE POUR LA PREDICTION DU FLUX CRITIQUE DONNENT DES RESULTATS THEORIQUES EN BON ACCORD AVEC NOS PROPRES RESULTATS EXPERIMENTAUX ET CEUX DE LA LITTERATURE. ENFIN, UNE ETUDE LOCALE ET MICROSCOPIQUE DE L'EBULLITION CONFINEE SUR UN SITE ARTIFICIEL ISOLE A PERMIS DE CONFIRMER L'IMPORTANCE DES PRINCIPAUX MECANISMES DE TRANSFERT DE CHALEUR
Author: JOCELYN.. BONJOUR
Publisher:
ISBN:
Category :
Languages : fr
Pages : 163
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Book Description
CE TRAVAIL CONCERNE L'AMELIORATION DES ECHANGES DE CHALEUR AU COURS DE L'EBULLITION DANS UN ESPACE CONFINE OU LE FLUIDE EST MIS EN MOUVEMENT SOUS L'EFFET DES FORCES DE GRAVITE (EFFET THERMOSIPHON). UNE ETUDE EXPERIMENTALE DE L'EBULLITION DU R113 DANS UN CANAL RECTANGULAIRE VERTICAL DONT LES COTES SONT OUVERTS A PERMIS DE METTRE EN EVIDENCE QUE, POUR LES FAIBLES FLUX, LE CONFINEMENT PEUT AUGMENTER LES COEFFICIENTS D'ECHANGE THERMIQUE JUSQU'A 300% PAR RAPPORT A L'EBULLITION LIBRE. CEPENDANT, AUX FORTS FLUX, IL ENTRAINE UNE DEGRADATION DES ECHANGES ET UNE DIMINUTION DU FLUX CRITIQUE. L'INFLUENCE DE LA PRESSION A EGALEMENT ETE ETUDIEE: UNE AUGMENTATION DE CELLE-CI AMELIORE LES ECHANGES MAIS NE PERMET PAS DE COMPENSER LA REDUCTION DU FLUX CRITIQUE DUE AU CONFINEMENT. UNE ANALYSE DES MECANISMES DE TRANSFERT DE CHALEUR INTERVENANT EN EBULLITION CONFINEE A ETE REALISEE. GRACE A LA TECHNIQUE DE L'ANEMOMETRIE A FIL CHAUD POUR LA DETECTION DES PHASES, TROIS REGIMES D'EBULLITION CONFINEE ONT ETE DETERMINES A PARTIR DE CRITERES OBJECTIFS (TAUX DE PRESENCE DE LA VAPEUR, TEMPS ET FREQUENCE DE PASSAGE DES BULLES,). UNE CARTE D'ECOULEMENTS ORIGINALE A ETE PROPOSEE AFIN D'IDENTIFIER CES DIFFERENTS REGIMES. LES LOIS D'ECHANGE THERMIQUE ETABLIES, LIEES A CES REGIMES, AINSI QUE LA CORRELATION PROPOSEE POUR LA PREDICTION DU FLUX CRITIQUE DONNENT DES RESULTATS THEORIQUES EN BON ACCORD AVEC NOS PROPRES RESULTATS EXPERIMENTAUX ET CEUX DE LA LITTERATURE. ENFIN, UNE ETUDE LOCALE ET MICROSCOPIQUE DE L'EBULLITION CONFINEE SUR UN SITE ARTIFICIEL ISOLE A PERMIS DE CONFIRMER L'IMPORTANCE DES PRINCIPAUX MECANISMES DE TRANSFERT DE CHALEUR
Author: France. Commissariat à l'énergie atomique
Publisher:
ISBN:
Category : Fuel cycle
Languages : en
Pages : 192
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Book Description
Author: Li-Zhi Zhang
Publisher: Elsevier
ISBN: 0124078338
Category : Science
Languages : en
Pages : 409
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Book Description
Conjugate Heat and Mass Transfer in Heat Mass Exchanger Ducts bridges the gap between fundamentals and recent discoveries, making it a valuable tool for anyone looking to expand their knowledge of heat exchangers. The first book on the market to cover conjugate heat and mass transfer in heat exchangers, author Li-Zhi Zhang goes beyond the basics to cover recent advancements in equipment for energy use and environmental control (such as heat and moisture recovery ventilators, hollow fiber membrane modules for humidification/dehumidification, membrane modules for air purification, desiccant wheels for air dehumidification and energy recovery, and honeycomb desiccant beds for heat and moisture control). Explaining the data behind and the applications of conjugated heat and mass transfer allows for the design, analysis, and optimization of heat and mass exchangers. Combining this recently discovered data into one source makes it an invaluable reference for professionals, academics, and other interested parties. - A research-based approach emphasizing numerical methods in heat mass transfer - Introduces basic data for exchangers' design (such as friction factors and the Nusselt/Sherwood numbers), methods to solve conjugated problems, the modeling of various heat and mass exchangers, and more - The first book to include recently discovered advancements of mass transfer and fluid flow in channels comprised of new materials - Includes illustrations to visually depict the book's key concepts
Author: Claude Cohen-Tannoudji
Publisher: John Wiley & Sons
ISBN: 3527345558
Category : Science
Languages : en
Pages : 790
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Book Description
This new, third volume of Cohen-Tannoudji's groundbreaking textbook covers advanced topics of quantum mechanics such as uncorrelated and correlated identical particles, the quantum theory of the electromagnetic field, absorption, emission and scattering of photons by atoms, and quantum entanglement. Written in a didactically unrivalled manner, the textbook explains the fundamental concepts in seven chapters which are elaborated in accompanying complements that provide more detailed discussions, examples and applications. * Completing the success story: the third and final volume of the quantum mechanics textbook written by 1997 Nobel laureate Claude Cohen-Tannoudji and his colleagues Bernard Diu and Franck Laloë * As easily comprehensible as possible: all steps of the physical background and its mathematical representation are spelled out explicitly * Comprehensive: in addition to the fundamentals themselves, the books comes with a wealth of elaborately explained examples and applications Claude Cohen-Tannoudji was a researcher at the Kastler-Brossel laboratory of the Ecole Normale Supérieure in Paris where he also studied and received his PhD in 1962. In 1973 he became Professor of atomic and molecular physics at the Collège des France. His main research interests were optical pumping, quantum optics and atom-photon interactions. In 1997, Claude Cohen-Tannoudji, together with Steven Chu and William D. Phillips, was awarded the Nobel Prize in Physics for his research on laser cooling and trapping of neutral atoms. Bernard Diu was Professor at the Denis Diderot University (Paris VII). He was engaged in research at the Laboratory of Theoretical Physics and High Energy where his focus was on strong interactions physics and statistical mechanics. Franck Laloë was a researcher at the Kastler-Brossel laboratory of the Ecole Normale Supérieure in Paris. His first assignment was with the University of Paris VI before he was appointed to the CNRS, the French National Research Center. His research was focused on optical pumping, statistical mechanics of quantum gases, musical acoustics and the foundations of quantum mechanics.
Author: International Atomic Energy Agency
Publisher: International Atomic Energy Agency
ISBN: 9789201063205
Category : Technology & Engineering
Languages : en
Pages : 72
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Book Description
This publication results from a technical meeting on phenomenology and technologies relevant to in-vessel melt retention (IVMR) and ex-vessel corium cooling (EVCC). The purpose of the publication is to capture the state of knowledge, at the time of that meeting, related to phenomenology and technologies as well as the challenges and pending issues relevant to IVMR and EVCC for water cooled reactors by summarizing the information provided by the meeting participants in a form useful to practitioners in Member States.
Author: Roger Balian
Publisher: Springer Science & Business Media
ISBN: 3540454802
Category : Science
Languages : en
Pages : 626
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Book Description
This popular, often cited text returns in a softcover edition to provide a thorough introduction to statistical physics and thermodynamics, and to exhibit the universal chain of ideas leading from the laws of microphysics to the macroscopic behaviour of matter. A wide range of applications illustrates the concepts, and many exercises reinforce understanding. Volume II applies statistical methods to systems governed by quantum effects, in particular to solid state physics, explaining properties due to the crystal structure or to the lattice excitations or to the electrons. The last chapters are devoted to non-equilibrium processes and to kinetic equations, with many applications included.
Author: Peter Atkins
Publisher: OUP Oxford
ISBN: 0191647632
Category : Science
Languages : en
Pages : 142
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Book Description
The laws of thermodynamics drive everything that happens in the universe. From the sudden expansion of a cloud of gas to the cooling of hot metal, and from the unfurling of a leaf to the course of life itself - everything is directed and constrained by four simple laws. They establish fundamental concepts such as temperature and heat, and reveal the arrow of time and even the nature of energy itself. Peter Atkins' powerful and compelling introduction explains what the laws are and how they work, using accessible language and virtually no mathematics. Guiding the reader from the Zeroth Law to the Third Law, he introduces the fascinating concept of entropy, and how it not only explains why your desk tends to get messier, but also how its unstoppable rise constitutes the engine of the universe.
Author: R.P. Chhabra
Publisher: CRC Press
ISBN: 1420015389
Category : Science
Languages : en
Pages : 801
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Book Description
Bubbles, Drops, and Particles in Non-Newtonian Fluids, Second Edition continues to provide thorough coverage of the scientific foundations and the latest advances in particle motion in non-Newtonian media. The book demonstrates how dynamic behavior of single particles can yield useful information for modeling transport processes in complex multipha
Author: Kaiser Engineers
Publisher:
ISBN:
Category : Nuclear power plants
Languages : en
Pages : 140
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Book Description
Author: Alain Hébert
Publisher: Presses inter Polytechnique
ISBN: 2553014368
Category : Nuclear physics
Languages : en
Pages : 426
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Book Description
