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iDEA: Drexel E-repository and Archives > Drexel Academic Community > College of Engineering > Department of Civil, Architectural,and Environmental Engineering > Proceedings of the 7th International Conference on HydroScience and Engineering (ICHE 2006) [ISBN: 0977447405] > BEST3D: a numerical hydrodynamics and water quality model: part 2 - water quality

Please use this identifier to cite or link to this item: http://hdl.handle.net/1860/1373

Title: BEST3D: a numerical hydrodynamics and water quality model: part 2 - water quality
Authors: Yeh, Gour-Tsyh (George)
Shan, Hua
Zhang, Fan
Wu, Tien-Shuenn
Hu, Gordon
Keywords: Water quality;Computational hydraulics;Nutrient concentrations
Issue Date: 11-Sep-2006
Publisher: Michael Piasecki and College of Engineering, Drexel University
Citation: Proceedings of the Seventh International Conference on Hydroscience and Engineering, Philadelphia, PA, September 2006. http://hdl.handle.net/1860/732
Abstract: This paper presents the development of the water quality module of a computer model BEST3D 1.5 (A Bay/Estuary Model to Simulate Hydrodynamics and Thermal, Salinity, Sediment, and Water Quality Transport in 3-Dimensions: Version 1.5). In BEST3D 1.5, a general paradigm of reaction-based approaches was taken to model water quality transport. In a reactionbased approach, all conceptualized biogoechemical processes are transformed into a reaction network. Through the decomposition of species governing equations via Gauss-Jordan column reduction of the reaction network, the system of M species transport equations is transformed to M reaction-extent transport equations. This system of equations is then approximated with three subsets: NE algebraic equations, NKI kinetic-variables transport equations, and NC component transport equations. With the diagonalization strategy, it makes the inclusion of arbitrary number of fast and kinetic reactions relatively easy, and, more importantly, it enables the formulation and parameterization of kinetic reactions one by one. To demonstrate the flexibility and generality, the eutrophication model in WASP5, QUAL2E, and CE-QUAL-ICM are recast in the mode of reaction networks. Preliminary model application is made to Loxahatchee River Estuaries to illustrate how reaction networks from QUAL2E are employed. Based on this preliminary application, the deficiencies of current practices in water quality modeling are discussed and the actions that must be taken to improve these practices are addressed.
Description: Paper presented at The Seventh International Conference on HydroScience and Engineering (ICHE)hosted by the College of Engineering at Drexel Univeristy on September 10-13, 2006 in Philadelphia, Pennsylvania. The conference theme was IT in the Field of HydroSciences. It included several mini-symposia that emphasized IT topics in HydroSciences and the yearly meeting of the metadata group of the International Oceanographic Data and Information Exchange organization.
URI: http://hdl.handle.net/1860/1373
ISBN: 0977447405
Appears in Collections:Proceedings of the 7th International Conference on HydroScience and Engineering (ICHE 2006) [ISBN: 0977447405]

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