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Author: International Conference on Numerical Modelling of River, Channel and Overland Flow for Water Resources and Environmental Applications
Publisher:
ISBN:
Category :
Languages : en
Pages : 8
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Book Description
Author: International Conference on Numerical Modelling of River, Channel and Overland Flow for Water Resources and Environmental Applications
Publisher:
ISBN:
Category :
Languages : en
Pages : 8
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Book Description
Author: D. Michael Gee
Publisher:
ISBN:
Category : Floodplain management
Languages : en
Pages : 14
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Book Description
A two-dimensional horizontal finite element numerical model (RMA-2) was applied to a 15 mile (24 km) river channel-floodplain reach in West Germany. Previous applications of such models have been restricted to much smaller scales. The results indicate that finite element schemes may successfully estimate river stage in large scale floodplain applications. Computed stage hydrographs compared well with observed data using loss coefficients within expected ranges. Two-dimensional flow models have been applied to certain classes of river channel problems. Applications have included detailed analyses of flow patterns near structures such as bridges and floodplains. In all these problems the scale of interest has been small, e.g. reaches of river a few river widths long. Many estuary studies have been done that were of large scale; some of these utilized a hybrid (numerical plus physical) modeling technique. In a review of the application of finite element methods to river channels, Samuels reported that the river channel was resolved separately from the floodplain in only two studies. Missing in previous work is attention to large scale floodplain modeling. The work reported in this paper focuses on the feasibility and accuracy of applying a two-dimensional flow model to a large floodplain. Traditional floodplain studies have used semi-empirical flow routing with steady, one-dimensional computation of water surface elevations to define inundated areas. Keywords: Army Corps of Engines. (kr).
Author: John S. Bridge
Publisher: John Wiley & Sons
ISBN: 1444311263
Category : Science
Languages : en
Pages : 504
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Book Description
Rivers and Floodplains is concerned with the origin, geometry, water flow, sediment transport, erosion and deposition associated with modern alluvial rivers and floodplains, how they vary in time and space, and how this information is used to interpret deposits of ancient rivers and floodplains. There is specific reference to the types and lifestyles of organisms associated with fluvial environments, human interactions with rivers and floodplains, associated environmental and engineering concerns, as well as the economic aspects of fluvial deposits, particularly the modeling of fluvial hydrocarbon reservoirs and aquifers. Methods of studying rivers and floodplains and their deposits are also discussed. Although basic principles are emphasized, many examples are detailed. Particular emphasis is placed on how an understanding of the nature of modern rivers and floodplains is required before any problems concerning rivers and floodplains, past or present, can be addressed rationally. Rivers and Floodplains is designed as a core text for senior undergraduate and graduate students studying modern or ancient fluvial environments, particularly in earth sciences, environmental sciences and physical geography, but also in civil and agricultural engineering. College teachers, researchers, and practising professionals will also find the book an invaluable reference. Presents a process-based approach, which is relevant to modern curricula. Discusses methods of studying rivers and floodplains and their deposits. Provides many detailed examples throughout the text. Emphasises the basic principles of this subject. As the first synthesis of this entire field, it will be a must-have for all students studying modern or ancient fluvial environments. Teachers, researchers and practising professionals will find this an invaluable reference tool. Rivers and Floodplains will also be of interest to geologists, geographers and engineers.
Author: R. J. Connell
Publisher:
ISBN:
Category : Floodplain management
Languages : en
Pages : 608
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Book Description
Author: Robert C. MacArthur
Publisher:
ISBN:
Category : Fluid dynamics
Languages : en
Pages : 300
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Book Description
Author: Bruce L. Rhoads
Publisher: Cambridge University Press
ISBN: 1108173780
Category : Science
Languages : en
Pages : 544
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Book Description
Rivers are important agents of change that shape the Earth's surface and evolve through time in response to fluctuations in climate and other environmental conditions. They are fundamental in landscape development, and essential for water supply, irrigation, and transportation. This book provides a comprehensive overview of the geomorphological processes that shape rivers and that produce change in the form of rivers. It explores how the dynamics of rivers are being affected by anthropogenic change, including climate change, dam construction, and modification of rivers for flood control and land drainage. It discusses how concern about environmental degradation of rivers has led to the emergence of management strategies to restore and naturalize these systems, and how river management techniques work best when coordinated with the natural dynamics of rivers. This textbook provides an excellent resource for students, researchers, and professionals in fluvial geomorphology, hydrology, river science, and environmental policy.
Author: Abdulaziz Saeed Alzahrani
Publisher:
ISBN:
Category : Bear Creek (Ohio)
Languages : en
Pages : 83
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Book Description
Flood simulation models have a wide variety of approaches that are available to compute the water surface elevations associated with a flood event. Some of these models use a One-dimensional (1D) approach, others use a Two-dimensional (2D), and there are others allow the use of integrated 1D and 2D simulations. In 2015, the US Army Corps of Engineering Hydrologic Engineering Center (HEC) released HEC-RAS Version 5.0.3 which performs 1D steady and unsteady flow calculation, as well as 2D unsteady flow calculation. 2D modeling is likely to become more common due to HEC-RAS. This paper is the comparison of 1D and 2D models for a water level in the channel and the floodplain inundation. Two treatments of the problem are explored: (1) a 1D model based upon discretization of floodplain units into storage areas; (2) a 2D model for a channel and a floodplain surface. The two models were tested on the Great Miami River and Bear Creek. The models were assessed by comparison with measured inundation extent. Also, the study reviews the academic basis for modeling floodplain flow based on a two-dimensional analysis. The goal of the proposed research effort will be to include the application of 2D unsteady-state models in future releases of the HEC-RAS 2D model.
Author: Interagency Floodplain Management Review Committee (U.S.). Scientific Assessment and Strategy Team
Publisher:
ISBN:
Category : Floodplain management
Languages : en
Pages : 296
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Book Description
Author: INTERNATIONAL CONFERENCE ON FLUVIAL HYDR
Publisher: Taylor & Francis
ISBN: 9789058095091
Category : Nature
Languages : en
Pages : 1312
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Book Description
Rivers provide many contributions to human well-being: water supply for domestic use, irrigation and industry, sustainable energy, convenient transport links and valuable wildlife habitats. Rivers also creat hazards in the form of flooding and geomorphic events. The need for observation, analysis and control of fluvial processes has increased in line with the degree of conflicting pressures on rivers during the last decades. The discipline of River Hydraulics is solicited to guide engineering works, evaluate environmental impacts and mitigate hazards. Simultaneously, new modelling tools have emerged from advances in physical understanding, computational methods and measurement techniques. Organised under the auspices of the International Association of Hydraulic Engineering and Research (IAHR), the International Conference River Flow 2002 sought to provide a forum for researchers involved in such developments. The three major topic of this proceedings are: hydrodynamics of river flow; sediment transport in rivers; and tools for flow modelling.
Author: John Paul Driscoll
Publisher:
ISBN:
Category : Floods
Languages : en
Pages : 338
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Book Description
