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Listar por palabra clave "Air valves"

Mostrando ítems 1-19 de 19

Analysis of hydraulic transients during pipeline filling processes with air valves in large-scale installations

Romero, Guillermo; Fuertes-Miquel, Vicente S.; Coronado-Hernández, Óscar E.; Ponz-Carcelén, Román; Biel-Sanchis, Francisco (Taylor & Francis, 2020-08-04)

[EN] During the filling process in pressurized hydraulic systems, sudden pressure changes generated inside the pipes can cause significant damage. To avoid these excessive overpressures, air valves should be installed to ...
Análisis de los transitorios hidráulicos generados durante los procesos de llenado y vaciado en instalaciones reales

Romero García-Consuegra, Guillermo (Universitat Politècnica de València, 2020-07-09)

[ES] Al realizar maniobras de llenado y de vaciado en los sistemas hidráulicos a presión, se generan en el interior de las tuberías unos cambios bruscos de presión que pueden provocar importantes daños. Para evitar alcanzar ...
Caracterización de válvulas de admisión y expulsión de aire comerciales

Iglesias Rey, Pedro Luis; Fuertes-Miquel, Vicente S.; García-Mares, Francisco-José; Martínez-Solano, F. Javier (Instituto Mexicano de Tecnologia del Agua, 2016)

[ES] El objetivo del trabajo es estudiar en detalle el comportamiento real de diferentes ventosas (válvulas de admisión y expulsión de aire). La primera parte del trabajo describe las diferentes técnicas experimentales ...
Caracterización experimental de flujos de admisión y expulsión de aire en ventosas

Arrue-Burillo, Paloma; Romero-Sedo, Antonio-Manuel; Espert Alemany, Vicent B.; García-Serra García, Jorge; Ponz Carcelén, Román; Biel Sanchís, Francisco; Alonso Campos, Joan Carles (Infoedita, 2019)

[EN] The present paper summarizes the results obtained in air release and admission tests in air valves with diameter between 50 and 150 mm. The pressure-flow curves are presented and the pressure values at which dynamic ...
Comparative Study of Intake and Exhaust Air Flows of Different Commercial Air Valves

Iglesias Rey, Pedro Luis; Fuertes-Miquel, Vicente S.; García Mares, Francisco José; Martínez-Solano, F. Javier (Elsevier, 2014)

This work aims to study in detail the methods of experimental characterization of air valves. In the first part, different experimental techniques are compared to the measurements made in the Air Valves Test Bench built ...
Concerning dynamic effects in pipe systems with two-phase flows: pressure surges, cavitation and ventilation

Ramos, Helena M.; Fuertes-Miquel, Vicente S.; Tasca, Elias; Coronado-Hernández, Oscar E.; Besharat, Mohsen; Zhou, Ling; Karney, Bryan (MDPI AG, 2022-08)

[EN] The risks associated with unsteady two-phase flows in pressurized pipe systems must be considered both in system design and operation. To this end, this paper summarizes experimental tests and numerical analyses that ...
Desarrollo de equipos para el ensayo de ventosas mediante la aplicación de la semejanza hidrodinámica

García Mares, Francisco José (Universitat Politècnica de València, 2016-10-20)

[ES] En la operación de las redes hidráulicas a presión uno de los mayores causantes de problemas es el aire atrapado en las mismas. Problemas que pueden tener en ocasiones consecuencias fatales para la integridad de la ...
Dynamic Behaviour of Air Valves in a Large-Scale Pipeline Apparatus

Bergant, Anton; Kruisbrink, Arno; Arregui de la Cruz, Francisco (ASSOC MECHANICAL ENGINEERS TECHNICIANS SLOVENIA, 2012)

[EN] This paper describes an experimental programme on the dynamic behaviour of air valves performed in a large-scale pipeline apparatus. Dynamic flow tests were performed at large (full) scale, since previous quasi-steady ...
Effects of Orifice Sizes for Uncontrolled Filling Processes in Water Pipelines

Aguirre-Mendoza, Andrés M.; Paternina-Verona, Duban A.; Oyuela, Sebastián; Coronado-Hernández, Oscar E.; Besharat, Mohsen; Fuertes-Miquel, Vicente S.; Iglesias Rey, Pedro Luís; Ramos, Helena M. (MDPI AG, 2022-03)

[EN] The sizing of air valves during the air expulsion phase in rapid filling processes is crucial for design purposes. Mathematical models have been developed to simulate the behaviour of air valves during filling processes ...
Emptying Operation of Water Supply Networks

Coronado-Hernández, Oscar Enrique; Fuertes-Miquel, Vicente S.; Angulo-Hernandez, Fredy N. (MDPI AG, 2018)

[EN] 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 ...
Maniobras de llenado y vaciado en grandes conducciones. Aplicación a una tubería de fundición DN400 en Massamagrell (Valencia, España)

Romero, G.; Coronado-Hernández, O.E.; Fuertes-Miquel, V.S.; Ponz-Carcelén, R. (Universitat Politècnica de València, 2020-01-31)

[ES] Debido a las bolsas de aire que hay en el interior de las tuberías durante los procesos de llenado y vaciado, se producen depresiones o sobrepresiones en el interior de las mismas, capaces de producir serios daños en ...
Modelo numérico del proceso de llenado de una conducción simple con válvula de aire

Coronado-Hernández, Oscar Enrique; Fuertes-Miquel, Vicente S.; Besharat, Mohsen; Ramos, Helena M. (Associacao Portuguesa dos Recursos Hidricos, 2019-12)

[EN] Water filling processes in pipes generate overpressures that must be considered so that the facilities do not fail during their operation. The filling manoeuvres with air trapped in water pipes have been studied by ...
Módulo de cálculo para el posicionamiento, el dimensionamiento y la selección de ventosas y desagües en redes de abastecimiento

Grisales Morales, David Eduardo (Universitat Politècnica de València, 2021-11-15)

[ES] Las operaciones de llenado y vaciado, el aire disuelto bajo condiciones normales de operación de una conducción o las roturas, crean bolsas de aire que producen problemas críticos a lo largo de la conducción capaces ...
Numerical modelling of pipelines with air pockets and air valves

Fuertes Miquel, Vicente Samuel; López Jiménez, Petra Amparo; Martínez-Solano, F. Javier; López-Patiño, Gonzalo (NRC Research Press (Canadian Science Publishing), 2016-12)

[EN] This work considers the behaviour of air inside pipes when the air is expelled through air valves. Generally, the air shows isothermal behaviour. Nevertheless, when the transient is very fast, it shows adiabatic ...
Parámetros significativos durante los procesos de vaciado en conducciones de agua

Coronado-Hernández, O.E.; Fuertes-Miquel, V.S.; Iglesias-Rey, P.L.; Mora-Meliá, D. (Universitat Politècnica de València, 2018-07-30)

[EN] Emptying pipelines can be critical in many water pipelines because subatmospheric pressure troughs are reached due to the expansion of entrapped air, which could cause considerable damage to the system depending on ...
Real-Time Analysis and Digital Twin Modeling for CFD-Based Air Valve Control During Filling Procedures

Paternina-Verona, Duban A.; Coronado-Hernández, Oscar E.; Pérez-Sánchez, Modesto; Ramos, Helena M. (MDPI AG, 2024-10-22)

[EN] Air exchange in pressurized water pipelines is an essential but complex aspect of pipeline modeling and operation. Implementing effective air management strategies can yield numerous benefits, enhancing the system¿s ...
Simplified Mathematical Model for Computing Draining Operations in Pipelines of Undulating Profiles with Vacuum Air Valves

Coronado-Hernández, Óscar E.; Fuertes-Miquel, Vicente S.; Quiñones-Bolaños, Edgar E.; Gatica, Gustavo; Coronado-Hernández, Jairo R. (MDPI AG, 2020-09)

[EN] The draining operation involves the presence of entrapped air pockets, which are expanded during the phenomenon occurrence generating drops of sub-atmospheric pressure pulses. Vacuum air valves should inject enough ...
Transient Phenomena Generated in Emptying Operations in Large-Scale Hydraulic Pipelines

Romero, Guillermo; Fuertes-Miquel, Vicente S.; Coronado-Hernández, Óscar E.; Ponz-Carcelén, Román; Biel Sanchis, Francisco (MDPI AG, 2020-08)

[EN] 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 ...
Understanding air release through air valves

Carlos Alberola, María del Mar; Arregui de la Cruz, Francisco; Cabrera Marcet, Enrique; Palau, C.V. (American Society of Civil Engineers, 2011)

[EN] Water transients with entrapped air can originate large pressure peaks that can severely damage distribution networks. Entrapped air can have a damping or amplifying effect on these undesirable pressure peaks. ...