Analysis of numerical simulation of the hydrodynamics in swimming pools, in terms of water quality

A numerical study of hydrodynamic behaviour in swimming pools was conducted to control the water quality. Hydrodynamics and mass transport processed by Computational Fluid Dynamics (CFD) were compared with experimental measurements of the residence time distribution (RTD). A CFD tool with turbulence models and a transport model of a species used to find the hydrodynamic effect on water quality by limiting the water dead zones that prevent the arrival of the disinfectant and that favour the development of micro-organisms. In addition, the hydrodynamic behaviour was determined experimentally by a pulse tracer test to compare the RTD. This work describes the hydrodynamic behaviours of three pools. The models are suitable for the study of physical and chemical phenomena with long characteristic times. The purpose of this article is to present the influences of hydrodynamic behaviour on the water quality, which in turn is influenced by design and hydraulic exchange conditions. In general, the result of this research underlines the hydrodynamic behaviour importance for a better water quality in a swimming pool. The next part of the project will focus on chemical and biological transformation processes.