CFD Simulation of pathogen intrusion during hydraulic transients in water distribution networks

Autores UPV
Año
CONGRESO CFD Simulation of pathogen intrusion during hydraulic transients in water distribution networks

Abstract

This work shows a CFD (Computational Fluid Dynamics) model for simulation of intrusion flow in water distribution pipes based on experimental and theoretical models. The intrusion flow in water distribution networks is known as pathogen intrusion, and it affects the water quality within the network. Their consequences are potential epidemic diseases due to the consumption of polluted water. In the experimental models the intrusion flow occurring during this phenomenon though failures was measured in pipes in steady and transient state. The first experimental model simulates the intrusion flows during a water hammer, and the second one, simulates the steady-state intrusion flow with external porous media in order to simulate conditions of the intrusion phenomenon on buried water distribution pipes. Finally, diverse water samples were taken around water mains to identify the pathogens and its concentration. The experimental results were the base to validate two numerical models, a vapour¿cavity MOC model, and a CFD model, both to simulate the transient event and the soil around the pipe to determine the intrusion volume and the concentration of contaminants that can enter in these specific events in water distribution networks.