Transient Phenomena Generated in Emptying Operations in Large-Scale Hydraulic Pipelines

Air pockets generated during emptying operations in pressurized hydraulic systems cause significant pressure drops inside pipes. To avoid these sudden pressure changes, one of the most widely used methods involves the installation of air valves along the pipeline route. These elements allow air exch...

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Main Authors: Guillermo Romero, Vicente S. Fuertes-Miquel, Óscar E. Coronado-Hernández, Román Ponz-Carcelén, Francisco Biel-Sanchis
Format: Article
Language:English
Published: MDPI AG 2020-08-01
Series:Water
Subjects:
Online Access:https://www.mdpi.com/2073-4441/12/8/2313
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author Guillermo Romero
Vicente S. Fuertes-Miquel
Óscar E. Coronado-Hernández
Román Ponz-Carcelén
Francisco Biel-Sanchis
author_facet Guillermo Romero
Vicente S. Fuertes-Miquel
Óscar E. Coronado-Hernández
Román Ponz-Carcelén
Francisco Biel-Sanchis
author_sort Guillermo Romero
collection DOAJ
description Air pockets generated during emptying operations in pressurized hydraulic systems cause significant pressure drops inside pipes. To avoid these sudden pressure changes, one of the most widely used methods involves the installation of air valves along the pipeline route. These elements allow air exchange between the exterior and the interior of the pipe, which alleviates the pressure drops produced and thus prevents possible breaks or failures in the structure of the installation. This study uses a mathematical model previously validated by the authors in smaller installations to simulate all hydraulic variables involved in emptying processes over time. The purpose of these simulations is the validation of the mathematical model in real large-scale installations, and to do this, the results obtained with the mathematical model are compared with actual measurements made by the partner company. The hydraulic system selected for the study is a pipeline with a nominal diameter of 400 mm and a total length of 1020 m. The results obtained from the mathematical model show great similarity with the experimental measurements, thus validating the model for emptying large pipes.
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spelling doaj.art-ae4dff1079dd4f5e877620ec633ec90e2023-11-20T10:29:40ZengMDPI AGWater2073-44412020-08-01128231310.3390/w12082313Transient Phenomena Generated in Emptying Operations in Large-Scale Hydraulic PipelinesGuillermo Romero0Vicente S. Fuertes-Miquel1Óscar E. Coronado-Hernández2Román Ponz-Carcelén3Francisco Biel-Sanchis4Empresa Mixta Metropolitana S.A., EMIMET, 46023 Valencia, SpainDepartment of Hydraulic Engineering and Environment, Universitat Politècnica de València, 46022 Valencia, SpainFacultad de Ingeniería, Universidad Tecnológica de Bolívar, Cartagena 131001, ColombiaEmpresa Mixta Metropolitana S.A., EMIMET, 46023 Valencia, SpainEmpresa Mixta Metropolitana S.A., EMIMET, 46023 Valencia, SpainAir pockets generated during emptying operations in pressurized hydraulic systems cause significant pressure drops inside pipes. To avoid these sudden pressure changes, one of the most widely used methods involves the installation of air valves along the pipeline route. These elements allow air exchange between the exterior and the interior of the pipe, which alleviates the pressure drops produced and thus prevents possible breaks or failures in the structure of the installation. This study uses a mathematical model previously validated by the authors in smaller installations to simulate all hydraulic variables involved in emptying processes over time. The purpose of these simulations is the validation of the mathematical model in real large-scale installations, and to do this, the results obtained with the mathematical model are compared with actual measurements made by the partner company. The hydraulic system selected for the study is a pipeline with a nominal diameter of 400 mm and a total length of 1020 m. The results obtained from the mathematical model show great similarity with the experimental measurements, thus validating the model for emptying large pipes.https://www.mdpi.com/2073-4441/12/8/2313hydraulic transientspipelines emptyingtrapped airair valvesmathematical modellarge-scale installations
spellingShingle Guillermo Romero
Vicente S. Fuertes-Miquel
Óscar E. Coronado-Hernández
Román Ponz-Carcelén
Francisco Biel-Sanchis
Transient Phenomena Generated in Emptying Operations in Large-Scale Hydraulic Pipelines
Water
hydraulic transients
pipelines emptying
trapped air
air valves
mathematical model
large-scale installations
title Transient Phenomena Generated in Emptying Operations in Large-Scale Hydraulic Pipelines
title_full Transient Phenomena Generated in Emptying Operations in Large-Scale Hydraulic Pipelines
title_fullStr Transient Phenomena Generated in Emptying Operations in Large-Scale Hydraulic Pipelines
title_full_unstemmed Transient Phenomena Generated in Emptying Operations in Large-Scale Hydraulic Pipelines
title_short Transient Phenomena Generated in Emptying Operations in Large-Scale Hydraulic Pipelines
title_sort transient phenomena generated in emptying operations in large scale hydraulic pipelines
topic hydraulic transients
pipelines emptying
trapped air
air valves
mathematical model
large-scale installations
url https://www.mdpi.com/2073-4441/12/8/2313
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