Download or read book Modelling of Water Quality and Sediment Transport in Aquatic Basins Using an Unstructured Grid System written by Onder Kocyigit and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modelling of Water Quality and Sediment Transport in Aquatic Basins Using an Unstructered Grid System written by zOnder Koçyigit and published by . This book was released on 2003 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Water Quality Modelling for Rivers and Streams written by Marcello Benedini and published by Springer Science & Business Media. This book was released on 2013-02-11 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main objective of the Water Framework Directive in the European countries is to achieve a “good status” of all the water bodies, in the integrated management of river basins. In order to assess the impact of improvement measures, water quality models are necessary. During the previous decades the progress in computer technology and computational methods has supported the development of advanced mathematical models for pollutant transport in rivers and streams. This book is intended to provide the fundamental knowledge needed for a deeper understanding of these models and the development of new ones, which will fulfil future quality requirements in water resources management. This book focuses on the fundamentals of computational techniques required in water quality modelling. Advection, dispersion and concentrated sources or sinks of contaminants lead to the formulation of the fundamental differential equation of pollutant transport. Its integration, according to appropriate initial and boundary conditions and with the knowledge of the velocity field, allows for pollutant behaviour to be assessed in the entire water body. An analytical integration is convenient only in one-dimensional approach with considerable simplification. Integration in the numerical field is useful for taking into account particular aspects of water body and pollutants. To ensure their reliability, the models require accurate calibration and validation, based on proper data, taken from direct measurements. In addition, sensitivity and uncertainty analysis are also of utmost importance. All the above items are discussed in detail in the 21 chapters of the book, which is written in a didactic form for professionals and students.
Download or read book Lynnhaven River Basin Ecosystem Restoration Project Final Feasibility Report and Integrated Environmental Assessment House Doc 113 176 December 11 2014 113 2 written by and published by . This book was released on 2015 with total page 1064 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the Institution of Civil Engineers written by and published by . This book was released on 2005 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Lynnhaven River Basin Ecosystem Restoration Project Final Feasibility Report and Integrated Environmental Assessment written by United States. Office of the Assistant Secretary of the Army (Civil Works) and published by . This book was released on 2014 with total page 1066 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modelling Flow Water Quality and Sediment Transport Processes in Riverine Basins written by Seyed Mahmood Kashefipour and published by . This book was released on 2002 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Water Quality Modeling written by Mervin D. Palmer and published by World Bank Publications. This book was released on 2001-01-01 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annotation This book provides a broad based understanding of the water quality prediction process and evaluates the merits and cost effectiveness in using water quality models under field conditions.
Download or read book Modelling Flow Water Quality and Sediment Transport Processes in Reverine Basins written by Seyed Mahmood Kashefipour and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fully Coupled Robust Shallow Water Flow and Sediment Transport Model on Unstructured Grids written by Jiaheng Zhao and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mathematical Modeling of Water Quality written by Gerald T. Orlob and published by John Wiley & Sons. This book was released on 1983 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Learning from Data for Aquatic and Geotechnical Environments written by Biswa Bhattacharya and published by CRC Press. This book was released on 2017-10-06 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The book presents machine learning as an approach to building models that learn from data, and that can be used to complement the existing modelling practice in aquatic and geotechnical environments. It provides concepts of learning from data, and identifies segmentation (clustering), classification, regression and control as the learning tasks. A unified methodology based on the concepts of machine learning, information theory and statistics is presented that can be followed to build models using data as well as expert knowledge. Several machine learning methods are used to extract features to build data-driven models in geotechnics. A set of regression models are built to predict sediment transport rates and assess harbour sedimentation. Controllers that replicate the control strategy of model-based optimal controllers of water systems are built for situations where fast and accurate decisions are needed. The models built demonstrate excellent performance; they may complement or even replace the existing models and can be used in practice. The performance of the models proves the effectiveness of the methodology and machine learning in general.
Download or read book An Introduction to Water Quality Modelling written by A. James and published by John Wiley & Sons. This book was released on 1984 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: An Introduction to Water Quality Modelling Second Edition Edited by A. James Department of Civil Engineering, University of Newcastle upon Tyne, UK This book presents a simple introduction (for those not familiar with modelling, computing or numerical methods) to the use of modelling techniques and their applications in the management of water quality. Eight years have passed since the first edition of the book was published and there has been a tremendous increase in the use of mathematical models in environmental engineering, especially the control of pollution in rivers and estuaries. Modelling has also addressed a much wider range of pollutants and there has been an increase in the range of conceptual approaches to the formulation of models. The text of this second edition has therefore been modified to reflect these changes. The chapters dealing with techniques have been expanded to cover a greater range of kinetics and introduce a background of understanding for statistical techniques and time series analysis. Similarly, the chapters dealing with the application of models to rivers, estuaries, lakes, groundwater and the marine environment have been expanded and updated. The overall aims of the book, however, remain the same, making it an ideal introductory text for people wishing to learn about water quality modelling.
Download or read book A Depth averaged Two dimensional Water Quality Model as a Research and Management Tool written by Tingting Zhu and published by . This book was released on 2006 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sediments have been identified as one of the leading non-point source pollutants since 1980's. The contaminated sediments pose threats to human health, environment and ecosystems. Total Maximum Daily Load (TMDL) and Best Management Practice (BMP) are two major water quality management measures. To fully study the water quality problems and guide the design of TMDL and BMP, a comprehensive two-dimensional depth-averaged water quality model framework for freshwaters was developed. The model framework comprises of three newly developed models: cohesive sediment transport model, water quality model (eutrophication model), and chemical fate and transport model. These three models were integrated with a robust hydrodynamic and non-cohesive sediment transport model, CCHE2D. The model development followed the steps of process formulation, model coding, model verification and validation. These three models are based on the state-of-the-art mechanisms of major physical, chemical, bio-chemical processes of freshwater systems. Each model was constructed independently in a modular structure so that it is flexible to meet the needs of site-specific problems and is easy to be updated and improved. The models were first verified by analytical solutions and then validated using six lab and field cases. Several empirical formulae for cohesive sediments were examined and found that there is a big uncertainty in the prediction of bed shear strength. A simple linear relationship for bed shear strength was found to fit well with the measurement for newly deposited cohesive sediment. Incorporation of the impact of suspended sediments into the general water quality model extends its capability of simulating the sediment-laden water bodies with higher accuracy. The model can be used to carry out numerical sensitivity analysis to find out how the system responds to different levels of suspended sediment concentration. The integrated flow, cohesive and non-cohesive sediment transport model, chemical fate and transport model was applied to the study of Upper Hudson River PCBs. The long term simulation of PCBs shows satisfactory agreement with the measurement. The comprehensive model framework was demonstrated for its capabilities. The real world water quality problems associated with sediments are ready to be solved.
Download or read book Coupling Sediment Transport and Water Quality Models written by Yi Xiong and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Sediment has profound effects on water quality. Correspondingly, water quality modeling often needs sediment transport modeling. However, simplified descriptive sediment transport was originally employed for water quality modeling, and the linkage between sediment transport models and water quality models is less developed. Therefore, the main purposes of this study were to develop general methods of coupling sediment transport and water quality models and to improve sediment transport modeling for water quality modeling. Linkage of sediment transport and water quality was discussed and a comprehensive sediment transport literature review was conducted. SEDDEER (Sediment Deposition and Erosion), a stand-alone sediment and contaminant fate and transport model, which simulates one water box and the underlying multiple sediment bed layers, was developed. SEDDEER for Visual Basic for Application (SEDDEER_VBA) was written in VBA. SEDDEER for FORTRAN (SEDDEER_FOR) is the corresponding FORTRAN model. To improve WASP in terms of sediment transport, SEDDEER_FOR was incorporated into the WASP TOXI7 module as the starting point to generate the coupled WASP model (WASP_SEDDEER). Verification and validation of SEDDEER_VBA were conducted prior to model application and incorporation. A comprehensive model test was performed to show that SEDDEER_FOR is computationally identical to SEDDEER_VBA. Simple tests were carried out to verify the fluxes across the sediment-water interface and ensure that the coupling of the WASP water column and SEDDEER bed models is correct. The testing results indicated that these models were verified and/or validated. SEDDEER was used to evaluate the effects of sediment on contaminant transport. WASP_SEDDEER, WASP7.4, and EFDC were applied to Mobile Bay to demonstrate the capabilities of WASP_SEDDEER, and WASP_SEDDEER produced a reasonable and consistent modeling result. The results of the study indicated that SEDDEER can be used for one-box sediment and contaminant fate and transport modeling, and also incorporated into water quality models. In addition, WASP_SEDDEER coupling was implemented correctly and can be applied to the real world. Finally, study results show that sediment affects contaminant fate and transport mostly by external forcing and flow conditions, and contaminant fate and transport varies with different sediment and contaminant characteristics and sediment transport processes.
Download or read book Sediment Dynamics and Pollutant Mobility in Rivers written by Bernd Westrich and published by Springer Science & Business Media. This book was released on 2007-10-11 with total page 463 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first interdisciplinary book on the mobilization of nutrients and pollutants in the water phase due to hydrodynamic processes. Coverage includes the formation of aggregates in turbulent water; flocks and biofilms from organic reactions; and the formation of new surfaces for re-adsorption of dissolved pollutants. The book gathers papers resulting from an International Symposium on Sediment Dynamics and Pollutant Mobility in River Basins in Hamburg, Germany, March, 2006.
Download or read book Integrated Environmental Modelling Framework for Cumulative Effects Assessment written by Anil Gupta and published by . This book was released on 2021 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
