A Computational Model For The Prediction Of
The Effect Of Multiple Effluent Discharges In A
Large River Section
Author(s)
M. B. Machado, L. T. Furlan, E. Matos, E. Tomaz
& J. R. Nunhez
Abstract
A future lack of water over the next decades has been observed by many studies.
Much effort has been devoted to find strategies which will help to manage water
resources properly. Theoretical studies have been used recently since the scope
of computational fluid dynamics (CFD) has increased, allowing its use in the
issue of water quality. In this scenario, it is important to develop new techniques
to predict the environmental impact of emissions in rivers so that strategies can
be devised to decrease the effects of pollution. This work presents an in-house
three-dimensional CFD model to simulate the dispersion of substances along a
river with multiple effluent discharges. The Cartesian coordinate system has
been chosen to represent the river. The model also assumes the river has no
curves. Although simple, this geometry is able to represent in a simple manner
the behavior of most rivers. The finite volume method is used to approximate the
momentum, mass and species conservation equations. Turbulence is taken into
account by a zero-order equation model. The developed model considers the
presence of multiple effluent discharges along the river. Some experimental
validation is also presented in the work. Results show that the proposed
methodology is a good tool for the evaluation of the environmental impact
caused by pollutant emissions, mainly in rivers with multiple discharges from
many industries. The software is very fast, especially when compared to other
CFD packages.
Keywords: environmental engineering, CFD, river, finite volumes.
Keywords
environmental engineering, CFD, river, finite volumes.
Related Book
Other papers in this volume
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