Coherent Flow Structures In Open Channels

Author : Phil Ashworth
Publisher : Unknown
Page : 784 pages
File Size : 42,6 Mb
Release : 1996-05-06
Category : Science
ISBN : UCSD:31822023215437

Get Book

Coherent Flow Structures in Open Channels by Phil Ashworth Pdf

Coherent Flow Structures in Open Channels presents the first integrated treatment, across a wide range of spatial and temporal scales, of the origins and characteristics of coherent fluid motions and their influence on sediment transport and bed morphology. This book contains contributions from an international and interdisciplinary authorship who are responsible for many of the recent advances in geophysical boundary layer research. Coherent flow structures are examined systematically across a range of scales from flat-bed boundary layers, grain and bedform roughness generated structures through to the largest scales, where structures may be associated with bars, meander bends and channel confluences. The book is broadly organized according to the spatial scales of coherent flow structures and presents a treatise on the study of these motions from theoretical, experimental and field-based approaches. These papers describe the origins, evolution and characteristics of coherent flow structures and the control which they may impart on sediment transport, both as a bed and suspended load, and ultimately on channel morphology. The book also highlights future research themes required to advance the interdisciplinary understanding of these complex, yet ubiquitous, natural flows. The research presented here will find applications within many fields, including geomorphology, sedimentology, the physical and numerical modelling of two-phase flows, environmental fluid and sediment dynamics and river engineering.

Author : Jeremy G. Venditti,James L. Best,Michael Church,Richard J. Hardy
Publisher : John Wiley & Sons
Page : 586 pages
File Size : 47,9 Mb
Release : 2013-08-28
Category : Science
ISBN : 9781118527191

Get Book

Coherent Flow Structures at Earth's Surface by Jeremy G. Venditti,James L. Best,Michael Church,Richard J. Hardy Pdf

An expert review of recent progress in the study of turbulent flows with a focus on recently identified organized structures. This book reviews the recent progress in the study of the turbulent flows that sculpt the Earth’s surface, focusing in particular on the organized structures that have been identified in recent years within turbulent flows. These coherent flow structures can include eddies or vortices at the scale of individual grains, through structures that scale with the flow depth in rivers or estuaries, to the large-scale structure of flows at the morphological or landform scale. These flow structures are of wide interest to the scientific community because they play an important role in fluid dynamics and influence the transport, erosion and deposition of sediment and pollutants in a wide variety of fluid flow environments. Scientific knowledge of these structures has improved greatly over the past 20 years as computational fluid dynamics has come to play an increasing important part in building our understanding of coherent flow structures across a broad range of scales. Chapters comprise a series of major, invited papers and a selection of the most novel, innovative papers presented at the second Coherent Flow Structures Conference held August 3-5, 2011 at Simon Fraser University in Burnaby, British Columbia. Chapters focus on six major themes: Dynamics of coherent flow structures (CFS) in geophysical flows Interaction of turbulent flows, vegetation and ecological habitats Coherent structure of atmospheric flows Numerical modeling of coherent flow structures Turbulence in open channel flows Coherent flow structures, sediment transport and morphological feedbacks.

Author : Anonim
Publisher : Unknown
Page : 88 pages
File Size : 51,8 Mb
Release : 1995
Category : Channels (Hydraulic engineering)
ISBN : 1872320600

Get Book

Coherent Flow Structures in Open Channels by Anonim Pdf

Author : Hiroji Nakagawa
Publisher : Routledge
Page : 287 pages
File Size : 53,7 Mb
Release : 2017-10-02
Category : Technology & Engineering
ISBN : 9781351406604

Get Book

Turbulence in Open Channel Flows by Hiroji Nakagawa Pdf

A review of open channel turbulence, focusing especially on certain features stemming from the presence of the free surface and the bed of a river. Part one presents the statistical theory of turbulence; Part two addresses the coherent structures in open-channel flows and boundary layers.

Author : Adam Bezuijen,Haike van Lottum
Publisher : CRC Press
Page : 1306 pages
File Size : 40,9 Mb
Release : 2005-12-22
Category : Technology & Engineering
ISBN : 0415392705

Get Book

Tunnelling. A Decade of Progress. GeoDelft 1995-2005 by Adam Bezuijen,Haike van Lottum Pdf

Following years of research, the first bored tunnel in soft soil in the Netherlands, the Tweede Heinenoord tunnel, was completed in 1998. Since then, Dutch engineers have increased their knowledge of soft soil tunnelling, with a significant and important part of this research being carried out by GeoDelft, the Dutch National Institute of Geo-Engineering. This book contains the most important publications by GeoDelft on the subject of soft soil tunnelling, focusing on the period from 1992 to the present, it is divided into four main headings: field measurements; grout behaviour; model testing; and numerical analysis. This impressive overview of the progress made in the Netherlands in soft soil tunnelling research over more than a decade is a valuable resource to those working in soft soil tunnelling worldwide.

Author : Monika B. Kalinowska,Magdalena Maria Mrokowska,Paweł Mariusz Rowiński
Publisher : Springer
Page : 502 pages
File Size : 44,6 Mb
Release : 2018-01-28
Category : Science
ISBN : 9783319709147

Get Book

Free Surface Flows and Transport Processes by Monika B. Kalinowska,Magdalena Maria Mrokowska,Paweł Mariusz Rowiński Pdf

This book contains the written, thoroughly reviewed versions of both invited lectures and regular presentations given at the 36th International School of Hydraulics, held at Jachranka in Poland on May 23–26, 2017. The contributions cover recent findings in the areas of mathematical modeling as well as experimental investigations related to free surface flows and pollution, sediment and heat transport processes in rivers. Better understanding of environmental flows requires cognition of physical, chemical and biological attributes of flowing water and therefore hydraulic research becomes strongly interdisciplinary field of science. The authors also realize that fundamental knowledge of environmental hydraulics problems is absolutely essential for planning and design of systems to manage water resources. Nowadays the readers face a rapid development of hydraulic research due to a boom in the computer sciences and measurement techniques and this is what this book is about. Eminent world leading experts in this field and young researchers from sixteen countries from all over the world contributed to this book.

Author : Scherer, Markus Maximilian
Publisher : KIT Scientific Publishing
Page : 348 pages
File Size : 50,6 Mb
Release : 2024-06-19
Category : Electronic
ISBN : 9783731513186

Get Book

Turbulent coherent structures, Secondary currents and Sediment ridges by Scherer, Markus Maximilian Pdf

The origin of secondary currents and subaqueous sediment patterns in natural rivers is analysed from first principles. For this purpose, simulations of sediment transport in canonical turbulent open channel flows are performed using a numerical technique that resolves all relevant flow scales and the dynamics of the individual sand grains. The high-fidelity datasets reveal the fundamental importance of individual coherent structures for the development of sediment patterns and secondary flows.

Author : Gary Parker,Marcelo H. Garcia
Publisher : CRC Press
Page : 1281 pages
File Size : 50,5 Mb
Release : 2005-09-29
Category : Technology & Engineering
ISBN : 9781439833896

Get Book

River, Coastal and Estuarine Morphodynamics by Gary Parker,Marcelo H. Garcia Pdf

The proceedings of the 4th Symposium on River, Coastal and Estuarine Morphodynamics offers the latest research results concerning quantitative modelling of the interaction of water and sediment and the shapes this interaction makes in rivers, watersheds, estuaries, the coast, the continental shelf and the deep sea. Morphodynamics is the study of the evolution of landscape and seascape features, from small scale to large.

Author : Norman D. Smith,John Rogers
Publisher : John Wiley & Sons
Page : 488 pages
File Size : 40,8 Mb
Release : 2009-03-16
Category : Science
ISBN : 9781444304220

Get Book

Fluvial Sedimentology VI by Norman D. Smith,John Rogers Pdf

Understanding of rivers and their sediments, both as modern systems and as ancient counterparts in the geological record, has progressed steadily but markedly over the past several decades, with contributions by practitioners in diverse fields of geosciences and engineering. This book contains 31 papers, with authors from 13 countries, who participated in the Sixth International Conference on Fluvial Sedimentology held in Cape Town, South Africa, in 1977. True to the nature of these quadrennial conferences, the papers in this book discuss a broad range of fluvial subjects that include the character of bedforms and sediment transport in river channels, morphological and sedimentological features of modern fluvial environments, modern and ancient avulsions, internal and external controls on the behaviour of river systems, and the facies and architectural organization of alluvial deposits. A specialist volume detailing the latest advances in fluvial sedimentology. Authorship includes the leaders in the field. If you are a member of the International Association of Sedimentologists, for purchasing details, please see: http://www.iasnet.org/publications/details.asp?code=SP28

Author : Andre Roy,Stephen Trudgill
Publisher : Routledge
Page : 305 pages
File Size : 44,6 Mb
Release : 2014-04-08
Category : Science
ISBN : 9781444144666

Get Book

Contemporary Meanings in Physical Geography by Andre Roy,Stephen Trudgill Pdf

Over the past twenty years, geography as an academic discipline has become more and more reflective, asking the key questions 'What are we doing?' 'Why are we doing it?'. These questions have, so far, been more enthusiastically taken up by human geography rather than physical geography. Contemporary Meanings in Physical Geography aims to redress the balance. Written and edited by a distinguished group of physical geographers, Contemporary Meanings in Physical Geography comprises of a collection of international writer's thoughts which reveal personal motivations, and look at tensions in the worlds of meaning in which physical geography is involved. How are the meanings of the physical environment derived? Is the future of physical geography one where the only, or at least the dominant, meanings are framed in the contexts of environmental issues. Covering a diverse and lively selection of topics, the contributors of this book offer guides to the contemporary debates in the philosophy of physical geography, and introduce the reader to its wider cultural significance. This book is an essential companion to anyone studying, or with an interest in, physical geography.

Author : H. Habersack,H. Piegay,M. Rinaldi
Publisher : Elsevier
Page : 836 pages
File Size : 43,9 Mb
Release : 2011-09-22
Category : Science
ISBN : 0080553591

Get Book

Gravel Bed Rivers 6 by H. Habersack,H. Piegay,M. Rinaldi Pdf

Based on the interdisciplinary approaches between earth science, engineering, physical geography, ecology and management, this text focuses on the theoretical questions, case-studies, challenges, and constraints taken from river restoration. It is illustrated with reports of new ground-breaking research covering spatial and temporal scales of physical processes in river catchments, coupling catchment and fluvial processes, grain dynamics and fluvial forms and on geo-ecology and restoration in mountain gravel-bed river environments. Each chapter includes discussions and comments providing experience and feedback from the fundamental research. This book covers scales of analysis for gravel-bed rivers, physics and modeling of processes at local and point scales, sediment delivery and storage, eco-geography and eco-hydraulics, and channel management and restoration. * Major topics in the field are presented by recognized scientific leaders * Chapters cover theories, practices, and methodologies in river management and restoration * Interdisciplinary approach includes case-studies on new, ground-breaking research

Author : C. Marjolein Dohmen-Janssen,Suzanne J.M.H. Hulscher
Publisher : CRC Press
Page : 1271 pages
File Size : 52,9 Mb
Release : 2019-08-22
Category : Technology & Engineering
ISBN : 9781439856567

Get Book

River, Coastal and Estuarine Morphodynamics: RCEM 2007, Two Volume Set by C. Marjolein Dohmen-Janssen,Suzanne J.M.H. Hulscher Pdf

Around the world, many people live, work and recreate in river, estuarine and coastal areas, systems which are also important wildlife habitats. It is imperative to understand the physics of such systems. A key element here is morphodynamics: the mutual interaction and adjustment of landform topography and fluid dynamics involving the motion of sed

Author : Gerhard H. Jirka,Wim S.J. Uijttewaal
Publisher : Taylor & Francis
Page : 684 pages
File Size : 55,9 Mb
Release : 2004-09-15
Category : Science
ISBN : 9781135288426

Get Book

Shallow Flows by Gerhard H. Jirka,Wim S.J. Uijttewaal Pdf

This text presents the key findings of the International Symposium held in Delft in 2003, which explored the process of shallow flows. Shallow flows are found in lowland rivers, lakes, estuaries, bays, coastal areas and in density-stratified atmospheres, and may be observed in puddles, as in oceans. They impact on the life and work of a wide variety of readers, who are here provided with a clear overview of the subject. Shallow flows are intrinsically turbulent. On one hand, there are strongly three-dimensional, small-scale turbulent motions and on the other hand, large-scale quasi-two-dimensional turbulence. This book explains and examines these differences and their effects with sections on transport processes in shallow flows; shallow jets, wakes and mixing layers; stratified and rotating flows in ocean and atmosphere; river and channel flows; and numerical modelling and turbulence closure techniques. The reader is provided with the pick of current studies and a fresh approach to the subject, with expert examination of a fascinating and crucial phenomenon of our world's water systems.

Author : Albert Gyr,Klaus Hoyer
Publisher : Springer Science & Business Media
Page : 290 pages
File Size : 45,5 Mb
Release : 2006-09-21
Category : Technology & Engineering
ISBN : 9781402050169

Get Book

Sediment Transport by Albert Gyr,Klaus Hoyer Pdf

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.

Author : Stephen Rice,Andre Roy,Bruce Rhoads
Publisher : John Wiley & Sons
Page : 474 pages
File Size : 43,8 Mb
Release : 2008-07-31
Category : Science
ISBN : 9780470760376

Get Book

River Confluences, Tributaries and the Fluvial Network by Stephen Rice,Andre Roy,Bruce Rhoads Pdf

River Confluences and the Fluvial Network brings together state of the art thinking on confluence dynamics tributary impacts and the links between processes at these scales and river network functions. The book is unique in focus, content, scope and in bringing together engineering, ecological and geomorphological approaches to the three key areas of river system science. Taking a global approach this multi-authored text features a team of carefully selected, internationally renowned, experts who have all contributed significantly to recent ground breaking advancements in the field. Each chapter includes a comprehensive review of work to date highlighting recent discoveries and the main thrust of knowledge, previously unpublished research and case studies, challenges and questions, detailed references as well as a forward looking assessment of the state of the science.