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Open AccessTechnical Note
Water 2018, 10(1), 22;

Emptying Operation of Water Supply Networks

Facultad de Ingeniería, Universidad Tecnológica de Bolívar, Cartagena 131001, Colombia
Departamento de Ingeniería Hidráulica y Medio Ambiente, Universitat Politècnica de València, Valencia 46022, Spain
Aguas de Cartagena, Gerencia Técnica, Cartagena 130002, Colombia
Author to whom correspondence should be addressed.
Received: 13 November 2017 / Revised: 9 December 2017 / Accepted: 25 December 2017 / Published: 29 December 2017
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Recently, emptying processes have been studied in experimental facilities in pipelines, but there is a lack regarding applications in actual pipelines, which permits establishing the risk of collapse because of sub-atmospheric pressure occurrence. This research presents a mathematical model to simulate the emptying process of water supply networks, and the application to a water emptying pipeline with nominal diameter of 1000 mm and 578 m long which is located on the southern of Cartagena, Bolívar Deparment, Colombia. In the application, both pipes and the air valve data manufacturer were considered. The behavior of all hydraulic and thermodynamic variables is considered. Results show that is crucial to know sub-atmospheric pressure values to prevent the collapse of the pipeline. The application of the mathematical model confirms that the hydraulic system is well designed depending on air valve sizes and maneuvering of drain valve. View Full-Text
Keywords: air-water; air valves; draining; emptying; transient flow; pipelines air-water; air valves; draining; emptying; transient flow; pipelines

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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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Coronado-Hernández, O.E.; Fuertes-Miquel, V.S.; Angulo-Hernández, F.N. Emptying Operation of Water Supply Networks. Water 2018, 10, 22.

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