Author: David Hugh ChambersPublisher:
ISBN:
Category :
Languages : en
Pages : 338
Book Description
Statistical Representations of Coherent Structures in Turbulent Flow Fields
Author: David Hugh ChambersCoherent Structures and Statistical Mechanics in Two-dimensional Flows
Author: Hanna BrandsPublisher:
ISBN: 9789057760105
Category : Fluid dynamics
Languages : en
Pages : 118
Book Description
Sediment Transport
Author: Albert GyrPublisher: Springer Science & Business Media
ISBN: 140205016X
Category : Technology & Engineering
Languages : en
Pages : 290
Book Description
This textbook discusses the fundamental principles of sediment transport in the geophysical context of rivers. It is intended as both a course textbook and as a guide for the practical engineer. It begins begin by describing phenomena such as bed load and suspension transport from a classical perspective. Concepts from turbulent flow regime are introduced to address the limitations of the classical approach to various aspects of sediment transport.
Intermittency of Coherent Structures: An Approach Using Statistical Theories of Isotropic Turbulence
Author: M. LesieurPublisher:
ISBN:
Category :
Languages : en
Pages : 12
Book Description
This paper contended that there is no real contradiction between the predictions of the statistical theories of turbulence and the existence of coherent structures observed in various turbulent flows. The dynamics of these flows are characterized by a competition between the organizing action of external forces or instability mechanisms which tend to create the coherent structures, and an explosive growth of small scale three-dimensionality which tends to destroy them. The latter mechanism is analogous with the inverse cascade of error in the statistical theory of the predictability of two-dimensional turbulence. It follows that the coherent structures are intermittently destroyed by three-dimensional turbulence, then reform under the action of the instability. Three-dimensional turbulence renormalizes the viscosity acting on the large scales into an eddy-viscosity proportional to delta-where delta and U are, respectively, the characteristic scale and velocity of the coherent structures. This theory is developed taking the turbulent free shear layer as a test flow, but its extension to rotating turbulence is also envisaged.
Advanced Turbulent Flow Computations
Author: Roger PeyretPublisher: Springer
ISBN: 3709125901
Category : Science
Languages : en
Pages : 320
Book Description
This book collects the lecture notes concerning the IUTAM School on Advanced Turbulent Flow Computations held at CISM in Udine September 7–11, 1998. The course was intended for scientists, engineers and post-graduate students interested in the application of advanced numerical techniques for simulating turbulent flows. The topic comprises two closely connected main subjects: modelling and computation, mesh pionts necessary to simulate complex turbulent flow.
Turbulent Flows
Author: Stephen B. PopePublisher: Cambridge University Press
ISBN: 9780521598866
Category : Science
Languages : en
Pages : 810
Book Description
This is a graduate text on turbulent flows, an important topic in fluid dynamics. It is up-to-date, comprehensive, designed for teaching, and is based on a course taught by the author at Cornell University for a number of years. The book consists of two parts followed by a number of appendices. Part I provides a general introduction to turbulent flows, how they behave, how they can be described quantitatively, and the fundamental physical processes involved. Part II is concerned with different approaches for modelling or simulating turbulent flows. The necessary mathematical techniques are presented in the appendices. This book is primarily intended as a graduate level text in turbulent flows for engineering students, but it may also be valuable to students in applied mathematics, physics, oceanography and atmospheric sciences, as well as researchers and practising engineers.
Statistical Theories and Computational Approaches to Turbulence
Author: Y. KanedaPublisher: Springer Science & Business Media
ISBN: 4431670025
Category : Technology & Engineering
Languages : en
Pages : 409
Book Description
This volume contains the papers presented at the workshop on Statistical The ories and Computational Approaches to Turbulence: Modern Perspectives and Applications to Global-Scale Flows, held October 10-13, 2001, at Nagoya Uni versity, Nagoya, Japan. Because of recent developments in computational capabilities, the compu tational approach is showing the potential to resolve a much wider range of length and time scales in turbulent physical systems. Nevertheless, even with the largest supercomputers of the foreseeable future, development of adequate modeling techniques for at least some scales of motion will be necessary for practical computations of important problems such as weather forecasting and the prediction and control of global pollution. The more powerful the available machines become, the more demand there will be for precise prediction of the systems. This means that more precise and reliable knowledge of the underlying dynamics will become important, and that more efficient and precise numerical methods best adapted to the new generation of computers will be necessary. The understanding of the nature of unresolved scales then will playa key role in the modeling of turbulent motion. The challenge to turbulence theory here is to elucidate the physics or dynamics of those scales, in particular their sta tistical aspects, and thereby develop models on sound bases to reduce modeling ambiguity. The challenge to the computational method is to develop efficient algorithms suitable for the problems, the machines, and the developed models.
Dissertation Abstracts International
Author: Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 902
Book Description
Statistics and Dynamics of Coherent Structures on Turbulent Grid-flow
Author: Stuart Reid LoewenPublisher:
ISBN:
Category : Coherent states
Languages : en
Pages : 248
Book Description
Author: