IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 35th IAHR Congress - Chengdu (2013) : THEME 7 - WATER RESOURCES AND HYDROINFORMATICS : Modeling contaminant transport with aerobic biodegradation in a shallow water body
Modeling contaminant transport with aerobic biodegradation in a shallow water body
Author : Cecia Millán Barrera, Víctor Manuel Arroyo Correa and Jorge Armando Laurel Castillo
The set of physical, chemical and biological characteristics in a water body determines its quality. In open systems, these components are not static but rather dynamic and interact particularly in such way that favor the establishment of physical, chemical and biological processes leading to changes in the water quality. A better understanding of these processes is useful in the formulation of water quality models, reactive substances mainly, being the most important and occurrence in nature. The water quality modeling using consistent and simplified models aims to reproduce those interactions, so that their effects can be predicted. This study focus on a conceptual model that includes both aerobic and anaerobic reactions. Nutrient uptake is described using the Michaelis-Menten expressions. A mathematical model is obtained consisting of a series of advective-diffusive-reactive transport equations. The hydrobiological model was implemented in CFD software Flow-3D, introducing it in the corresponding subroutine of source code and compiling it, for later applied in the transport modeling of species in a shallow water body. As a part of the model performance it was verified its capability to reproduce results obtained by Erwin and Celia (1992) in modeling two-species equations that describe contaminant transport with aerobic degradation using ELLAM (Eulerian Lagrangian Localized Adjoint Methods) in one dimension. Later the model transport used in the previous comparing was applied in a shallow artificial lake in two dimensions. The CFD software Flow-3D uses volume finite approximations to solve equations and the technique VOF (Volume of Fluid) to calculate the free surface. In this stage results are consistent.
File Size : 675,654 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 35th IAHR Congress - Chengdu (2013)
Date Published : 19/07/2016
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