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Water 2018, 10(6), 733; https://doi.org/10.3390/w10060733

Validation of a Computational Fluid Dynamics Model for a Novel Residence Time Distribution Analysis in Mixing at Cross-Junctions

1
Ph.D. Student of Doctoral program on Water Sciences and Technology, Engineering Division, Universidad de Guanajuato, Av. Juárez No. 77, Centro, Guanajuato 36000, Mexico
2
Geomatics and Hydraulics Engineering Department, Universidad de Guanajuato, Av. Juárez No. 77, Centro, Guanajuato 36000, Mexico
3
Hydraulic Engineering and Environment Department, Universitat Politècnica de València, Camino de Vera, s/n, 46022 Valencia, Spain
*
Author to whom correspondence should be addressed.
Received: 30 April 2018 / Revised: 27 May 2018 / Accepted: 28 May 2018 / Published: 5 June 2018
(This article belongs to the Special Issue New Challenges in Water Systems)
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Abstract

In Water Distribution Networks, the chlorine control is feasible with the use of water quality simulation codes. EPANET is a broad domain software and several commercial computer software packages base their models on its methodology. However, EPANET assumes that the solute mixing at cross-junctions is “complete and instantaneous”. Several authors have questioned this model. In this paper, experimental tests are developed while using Copper Sulphate as tracer at different operating conditions, like those of real water distribution networks, in order to obtain the Residence Time Distribution and its behavior in the mixing as a novel analysis for the cross-junctions. Validation tests are developed in Computational Fluid Dynamics, following the k-ε turbulence model. It is verified that the mixing phenomenon is dominated by convection, analyzing variation of Turbulent Schmidt Number vs. experimental tests. Having more accurate mixing models will improve the water quality simulations to have an appropriate control for chlorine and possible contaminants in water distribution networks. View Full-Text
Keywords: water distribution networks; EPANET; safe water water distribution networks; EPANET; safe water
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Hernández-Cervantes, D.; Delgado-Galván, X.; Nava, J.L.; López-Jiménez, P.A.; Rosales, M.; Mora Rodríguez, J. Validation of a Computational Fluid Dynamics Model for a Novel Residence Time Distribution Analysis in Mixing at Cross-Junctions. Water 2018, 10, 733.

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