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Author : Mohammed el Hamraoui
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (493 download)
Download or read book Contributions à la simulation d'écoulement tridimensionnel par méthode de vortex written by Mohammed el Hamraoui and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : GERARD.. PAYEN
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (49 download)
Download or read book CONTRIBUTION A L'ETUDE DES REGIMES D'ECOULEMENT A FAIBLE NOMBRE DE REYNOLDS AU TRAVERS D'EXPANSIONS SYMETRIQUES PAR SIMULATIONS NUMERIQUES INSTATIONNAIRES BASEES SUR UNE METHODE DE RANDOM VORTEX HYBRIDE written by GERARD.. PAYEN and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: UN OUTIL NUMERIQUE DESTINE A LA SIMULATION INSTATIONNAIRE D'ECOULEMENTS INCOMPRESSIBLES VISQUEUX PARTIELLEMENT CONFINES DANS LE CADRE D'UNE APPROXIMATION BI-DIMENSIONNELLE PLANE EST PRESENTE. BASE SUR UNE METHODE DE RANDOM VORTEX HYBRIDE, IL EXPLOITE L'EQUATION DE TRANSPORT DE LA VORTICITE PAR UNE DISCRETISATION ADAPTATIVE SUR DES ELEMENTS LAGRANGIENS A SUPPORTS COMPACTS. DES ALGORITHMES DESTINES A AMELIORER LA PERFORMANCE DE CALCUL ET LE FLEXIBILITE SONT EGALEMENT INTRODUITS. UNE ETUDE BIBLIOGRAPHIQUE RAISONNEE RELATIVE AUX ECOULEMENTS AU TRAVERS D'EXPANSIONS SYMETRIQUES BRUSQUES EST MENEE. LES PARAMETRES DETERMINANTS SONT DEGAGES. DIFFERENTS REGIMES SONT DISTINGUES: LES TRANSITIONS RENCONTREES A NOMBRE DE REYNOLDS CROISSANT CONDUISENT D'UN ECOULEMENT RECIRCULANT SYMETRIQUE STATIONNAIRE A DES CONFIGURATIONS ASYMETRIQUES PUIS A L'APPARITION D'INSTABILITES. CERTAINES JUSTIFICATIONS PHENOMENOLOGIQUES SONT PROPOSEES ET LES MECANISMES MAL CERNES SONT SOULIGNES. LA METHODE NUMERIQUE DECRITE EST APPLIQUEE A LA SIMULATION DE CES ECOULEMENTS ET LES RESULTATS OBTENUS COMPARES AUX DONNEES EXPERIMENTALES ET NUMERIQUES DISPONIBLES. LES PREDICTIONS EFFECTUEES SONT EN EXCELLENT ACCORD DANS LE CAS DU REGIME SYMETRIQUE STATIONNAIRE. A UN NOMBRE DE REYNOLDS PLUS ELEVE, LES CALCULS CONDUISENT A DES REGIMES ASYMETRIQUES DONT SEULE LA NATURE EST CONFORME AUX RESULTATS EXPERIMENTAUX. LE DECLENCHEMENT D'INSTABILITES APPARAIT A UNE VALEUR DE REYNOLDS PLUS FAIBLE QU'EXPERIMENTALEMENT. LE ROLE DE LA METHODE NUMERIQUE DANS CES DESACCORDS EST SUGGERE, AINSI QUE D'EVENTUELS PALLIATIFS
Author : Assad Abdulwahad
Publisher :
ISBN 13 :
Total Pages : 155 pages
Book Rating : 4.:/5 (491 download)
Download or read book Contribution en hydraulique-aérodynamique par la méthode des vortex aléatoires written by Assad Abdulwahad and published by . This book was released on 2002 with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ce travail est consacré à l'étude et à la mise en oeuvre de la méthode des vortex aléatoires (Random Vortex Method (RVM)) qui permet de simuler des écoulements turbulents, bidimensionnels, incompressibles et instationnaires. L'algorithme de cette méthode et les conditions d'adhérence sont décrits. Deux types d'écoulements sont simulés. Le premier est l'écoulement de Couette-Poiseuille; le deuxième un écoulement pulsé autour d'une plaque plane (couche limite pulsée). Cette étude a permis de tester la RVM pour les deux types d'écoulements. Pour l'écoulement de Couette-Poiseuille, nous avons calculé le profil de vitesse moyenne ainsi que les grandeurs statistiques concernant les fluctuations de vitesses, et nous avons mis en évidence les structures cohérentes. Pour l'écoulement pulsé autour d'une plaque plane, des simulations sont réalisées pour une gamme de nombre de Reynolds (10[puissance]3-7.10[puissance]6). Une étude préliminaire expérimentale a été réalisée pour un écoulement pulsé autour d'une plaque plane afin de valider certains résultats numériques. Nous constatons un bon accord entre la simulation numérique et l'expérimentation.
Author :
Publisher :
ISBN 13 :
Total Pages : 214 pages
Book Rating : 4.:/5 (224 download)
Download or read book Vortex Simulation of Separated Flows in Two and Three Dimensions written by and published by . This book was released on 1990 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis is concerned with the applications of vortex methods to the problem of unsteady, separated flows in two and three dimensions and can be divided into three parts. In the first part, an improved method for satisfying the boundary conditions on a flat plate is developed and applied to the two-dimensional separated flow problem. In the second part, an improved three-dimensional vortex particle method is developed. In the third part, the two-dimensional method developed in the first part is modified and extended to three dimensions.
Author :
Publisher :
ISBN 13 : 9789283610724
Total Pages : 198 pages
Book Rating : 4.6/5 (17 download)
Download or read book A Selection of Test Cases for the Validation of Large-eddy Simulations of Turbulent Flows written by and published by . This book was released on 1998 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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Publisher :
ISBN 13 :
Total Pages : 484 pages
Book Rating : 4.:/5 (31 download)
Download or read book La Recherche Aérospatiale written by and published by . This book was released on 1993 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Mohamed Meddi
Publisher : MDPI
ISBN 13 : 3039214314
Total Pages : 212 pages
Book Rating : 4.0/5 (392 download)
Download or read book Modeling and Practice of Erosion and Sediment Transport under Change written by Mohamed Meddi and published by MDPI. This book was released on 2019-09-17 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: Climate and anthropogenic changes impact the conditions of erosion and sediment transport in rivers. Rainfall variability and, in many places, the increase of rainfall intensity have a direct impact on rainfall erosivity. Increasing changes in demography have led to the acceleration of land cover changes in natural areas, as well as in cultivated areas, and, sometimes, in degraded areas and desertified landscapes. These anthropogenized landscapes are more sensitive to erosion. On the other hand, the increase in the number of dams in watersheds traps a great portion of sediment fluxes, which do not reach the sea in the same amount, nor at the same quality, with consequences on coastal geomorphodynamics. This book is dedicated to studies on sediment fluxes from continental areas to coastal areas, as well as observation, modeling, and impact analysis at different scales from watershed slopes to the outputs of large river basins. This book is concentrated on a number of keywords: “erosion” and “sediment transport”, “model” and “practice”, and “change”. The keywords are briefly discussed with respect to the relevant literature. The contributions in this book address observations and models based on laboratory and field data, allowing researchers to make use of such resources in practice under changing conditions.
Author : Philippe Gourbesville
Publisher : Springer
ISBN 13 : 9811072183
Total Pages : 1205 pages
Book Rating : 4.8/5 (11 download)
Download or read book Advances in Hydroinformatics written by Philippe Gourbesville and published by Springer. This book was released on 2018-02-26 with total page 1205 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gathers a collection of extended papers based on presentations given during the SimHydro 2017 conference, held in Sophia Antipolis, Nice, France on June 14–16, 2017. It focuses on how to choose the right model in applied hydraulics and considers various aspects, including the modeling and simulation of fast hydraulic transients, 3D modeling, uncertainties and multiphase flows. The book explores both limitations and performance of current models and presents the latest developments in new numerical schemes, high-performance computing, multiphysics and multiscale methods, and better interaction with field or scale model data. It gathers the lastest theoretical and innovative developments in the modeling field and presents some of the most advance applications on various water related topics like uncertainties, flood simulation and complex hydraulic applications. Given its breadth of coverage, it addresses the needs and interests of practitioners, stakeholders, researchers and engineers alike.
Author :
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ISBN 13 :
Total Pages : 950 pages
Book Rating : 4.F/5 ( download)
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1998 with total page 950 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
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ISBN 13 :
Total Pages : 1232 pages
Book Rating : 4.:/5 (89 download)
Download or read book Government Reports Annual Index written by and published by . This book was released on 1992 with total page 1232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Pierre Sagaut
Publisher : World Scientific
ISBN 13 : 1848169876
Total Pages : 446 pages
Book Rating : 4.8/5 (481 download)
Download or read book Multiscale and Multiresolution Approaches in Turbulence written by Pierre Sagaut and published by World Scientific. This book was released on 2013 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book aims to provide the reader with an updated general presentation of multiscale/multiresolution approaches in turbulent flow simulations. All modern approaches (LES, hybrid RANS/LES, DES, SAS) are discussed and recast in a global comprehensive framework. Both theoretical features and practical implementation details are addressed. Some full scale applications are described, to provide the reader with relevant guidelines to facilitate a future use of these methods.
Author :
Publisher :
ISBN 13 :
Total Pages : 1132 pages
Book Rating : 4.3/5 (243 download)
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1988 with total page 1132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ion Paraschivoiu
Publisher : Presses inter Polytechnique
ISBN 13 : 9782553011306
Total Pages : 568 pages
Book Rating : 4.0/5 (113 download)
Download or read book Subsonic Aerodynamics written by Ion Paraschivoiu and published by Presses inter Polytechnique. This book was released on 2003 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : David C. Wilcox
Publisher :
ISBN 13 : 9781928729082
Total Pages : 522 pages
Book Rating : 4.7/5 (29 download)
Download or read book Turbulence Modeling for CFD: CD-ROM written by David C. Wilcox and published by . This book was released on 2006 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Silke Wieprecht
Publisher : CRC Press
ISBN 13 : 1317225317
Total Pages : 282 pages
Book Rating : 4.3/5 (172 download)
Download or read book River Sedimentation written by Silke Wieprecht and published by CRC Press. This book was released on 2016-11-30 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sediment dynamics in fluvial systems is of great ecological, economic and human-health-related significance worldwide. Appropriate management strategies are therefore needed to limit maintenance costs as well as minimize potential hazards to the aquatic and adjacent environments. Human intervention, ranging from nutrient/pollutant release to physical modifications, has a large impact on sediment quantity and quality and thus on river morphology as well as on ecological functioning. Truly understanding sediment dynamics requires as a consequence a multidisciplinary approach.River Sedimentation contains the peer-reviewed scientific contributions presented at the 13th International Symposium on River Sedimentation (ISRS 2016, Stuttgart, Germany, 19-22 September 2016), and includes recent accomplishments in theoretical developments, numerical modelling, experimental laboratory work, field investigations and monitoring as well as management methodologies.
Author : Fabien Anselmet
Publisher : John Wiley & Sons
ISBN 13 : 1119178398
Total Pages : 529 pages
Book Rating : 4.1/5 (191 download)
Download or read book Acoustics, Aeroacoustics and Vibrations written by Fabien Anselmet and published by John Wiley & Sons. This book was released on 2016-01-07 with total page 529 pages. Available in PDF, EPUB and Kindle. Book excerpt: This didactic book presents the main elements of acoustics, aeroacoustics and vibrations. Illustrated with numerous concrete examples linked to solid and fluid continua, Acoustics, Aeroacoustics and Vibrations proposes a selection of applications encountered in the three fields, whether in room acoustics, transport, energy production systems or environmental problems. Theoretical approaches enable us to analyze the different processes in play. Typical results, mostly from numerical simulations, are used to illustrate the main phenomena (fluid acoustics, radiation, diffraction, vibroacoustics, etc.).
Author : Don Montague
Publisher : Taylor & Francis
ISBN 13 : 9780419199106
Total Pages : 472 pages
Book Rating : 4.1/5 (991 download)
Download or read book Dictionary of Building and Civil Engineering written by Don Montague and published by Taylor & Francis. This book was released on 1996 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dual-language dictionary lists over 20,000 specialist terms in both French and English, covering architecture, building, engineering and property terms. It meets the needs of all building professionals working on projects overseas. It has been comprehensively researched and compiled to provide an invaluable reference source in an increasingly European marketplace.
