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Project ID: ICA3-CT-2000-30007
Funded under: FP5-INCO 2
Country: France

A virtual numerical simulator for aeration effects in lake eutrophication

A virtual numerical simulator for aeration effects in lake eutrophication, Submitted to International Journal of Computational Fluid Dynamics, Vol 16-2, pp. 119-128, 2002.

In this paper, the eutrophication process in reservoirs is briefly presented, then one of the best remedial actions against it, i.e. aeration, is developed. Multiphase flows are then described to show the complexity of the process and related modelling issues. A first order approximation is then suggested through one-phase flow analysis based on the conventional Navier-Stokes equations to simulate virtually aeration effects in natural reservoirs or lakes by prescribing appropriate internal conditions for velocity to simulate air injection.

Though the flow features three-dimensional aspects with variable density, only two-dimensional incompressible fluid flow configurations are considered in this paper to demonstrate the feasibility of the methodology developed. Numerical experiments are then run for scenario analysis. Though the results are somewhat qualitative, they are encouraging and with some kind of validation and calibration a cheap alternative can be offered for studying the aeration process.

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Institut National de Recherche en Informatique et en Automatique - INRIA
Domaine de Voluceau-Rocquencourt
78153 Le Chesnay
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