Author: Publisher:
ISBN:
Category : Reservoir sedimentation
Languages : en
Pages : 358
Book Description
Mathematical Modelling of Sediment Transport and Deposition in Reservoirs
Author: Publisher:
ISBN:
Category : Reservoir sedimentation
Languages : en
Pages : 358
Book Description
Mathematical Modelling of Sediment Transport and Deposition in Reservoirs - Guidelines and Case Studies / Modélisation Mathématique du Transport et des Dépôts de Sédiments dans les Réservoirs - Lignes Directrices et Études de Cas
Author: Cigb IcoldPublisher: CRC Press
ISBN: 1000383512
Category : Technology & Engineering
Languages : en
Pages : 334
Book Description
As reservoir sedimentation has proven to be a serious problem in South Africa, research in this field has been ongoing for more than 70 years. This publication emanates from extensive research which has been undertaken over the past 30 years with the support of the South African Department of Water and Sanitation as well as the South African Water Research Commission. A great deal of information has fortunately also been obtained from China. Given the universal nature of hydraulic formulae it is not surprising, yet gratifying, that Chinese and South African data generally conform to the same mathematical relationships. This indicates that these relationships should be applicable in other countries as well. Much of the information contained here has been condensed from a more comprehensive publication. This ICOLD Bulletin follows on Bulletin 115 “Dealing with reservoir sedimentation”, which gave guidelines for management of reservoirs to limit sedimentation. The guidelines on mathematical modelling of sediment transport dynamics in reservoirs in this document can be used during the planning and design of new dams, as well as for the management of existing dams. Comme la sédimentation dans les réservoirs s'est avérée être un problème sérieux en Afrique du Sud, la recherche dans ce domaine est en cours depuis plus de 70 ans. Cette publication émane de la recherche étendue qui a été menée au cours des 30 dernières années avec l'appui du ministère sud-africain de l’eau et de l’assainissement, ainsi que de la commission sud-africaine de recherche sur l'eau. Un grand nombre d'informations ont également été obtenues de la part de la Chine. Étant donné le caractère universel de formules hydrauliques, il n'est pas surprenant, mais très gratifiant, que les données chinoises et sud-africaines se conforment généralement aux mêmes relations mathématiques. Ceci indique que ces relations devraient être applicables dans d'autres pays également. Une grande partie de l'information contenue ici a été condensée à partir d'une publication plus complète. Ce bulletin CIGB fait suite au bulletin 115 "Traité sur la sédimentation dans les réservoirs", qui a donné des directives pour la gestion des réservoirs en vue de limiter la sédimentation. Les directives sur la modélisation mathématique de la dynamique de transport des sédiments dans les réservoirs de ce présent document peuvent être utilisées lors de la planification et la conception de nouveaux barrages et pour la gestion des barrages existants.
Reservoir Sedimentation
Author: G.W. AnnandalePublisher: Elsevier
ISBN: 0080870201
Category : Science
Languages : en
Pages : 233
Book Description
Research on reservoir sedimentation in recent years has been aimed mainly at water resources projects in developing countries. These countries, especially in Africa, often have to cope with long droughts, flash floods and severe erosion problems. Large reservoir capacities are required to capture water provided by flash floods so as to ensure the supply of water in periods of drought. The problem arising however is that these floods, due to their tremendous stream power, carry enormous volumes of sediment which, due to the size of reservoirs, are virtually deposited in toto in the reservoir basin, leading to fast deterioration of a costly investment. Accurate forecasting of reservoir behaviour is therefore of the utmost importance.This book fills a gap in current literature by providing in one volume comprehensive coverage of techniques required to practically investigate the effects sediment deposition in reservoirs has on the viability of water resources projects. Current techniques for practically estimating sediment yield from catchments, estimating the volume of sediment expected to deposit in reservoirs, predicting sediment distribution and calculating scour downstream of reservoirs are evaluated and presented. The liberal use of diagrams and graphs to explain the various techniques enhances understanding and makes practical application simple. A major feature of the book is the application of stream power theory to explain the process of reservoir sedimentation and to develop four new methods for predicting sediment distribution in reservoirs.The book is primarily directed at practising engineers involved in the planning and design of water resources projects and at post-graduate students interested in this field of study.
Mathematical Modeling of Sediment Deposition in Reservoirs
Author: Jose L. S. LopezMathematical Modeling of Sediment Deposition in Reservoirs
Author: Jose Luis LopezMathematical Modeling of Sediment Deposition in Reservoirs
Author: Jose Luis Lopez SPublisher:
ISBN:
Category : Reservoir sedimentation
Languages : en
Pages : 63
Book Description
HEC-6
Author: Publisher:
ISBN:
Category : HEC-6 (Computer program)
Languages : en
Pages : 18
Book Description
Reservoir Sedimentation
Author: Anton J. SchleissPublisher: CRC Press
ISBN: 1315736918
Category : Technology & Engineering
Languages : en
Pages : 300
Book Description
Despite the mechanisms of reservoir sedimentation being well known for a long time, sustainable and preventive measures are rarely taken into consideration in the design of new reservoirs. To avoid operational problems of powerhouses, sedimentation is often treated for existing reservoirs with measures which are efficient only for a limited time.Th
Deposition and Simulation of Sediment Transport in the Lower Susquehanna River Reservoir System
Author: Publisher:
ISBN:
Category : Reservoir sedimentation
Languages : en
Pages : 52
Book Description
Mathematical Model of Estuarial Sediment Transport
Author: Ranjan AriathuraiPublisher:
ISBN:
Category : Erosion
Languages : en
Pages : 174
Book Description
A two-dimensional finite element model that simulates erosion, Transport, and deposition of suspended sediments is presented. The breadth-averaged or depth-averaged equations may be used depending on the problem to be solved. The governing equations for two phase transport are derived and then solved by the finite element method using isoparametric quadrilateral elements in which a quadratic approximation is made for the suspended sediment concentrations. Expressions used for the rates and conditions under which erosion and deposition occur are from previous experimental studies. Continuing aggregation is accounted for by specifying the settling velocity of the flocs in each element at each time step. The bed is considered to be formed of a number of layers of sediment whose physical properties change with overburden pressure. The model provides suspended sediment concentrations and bed profile at each time step. Numerical stability and convergence tests were conducted by comparing simulated results with analytic solutions and actual measurements. The original model, SEDIMENT I, was verified by comparison with measurements in a recirculating flume. The modified model, SEDIMENT II, developed for this project was verified by comparison with field measurements in the Savannah Estuary, Georgia. (Author).