Bonilla-Correa, Dalia M.; Coronado-Hernández, Oscar Enrique; Fuertes-Miquel, Vicente S.; Besharat, Mohsen; Ramos, Helena M.(MDPI AG, 2023-04)
[EN] The estimation of thermodynamic behavior during filling processes with entrapped air in water pipelines is a complex task as it requires solving a system of algebraic-differential equations. A lot of different numerical ...
Besharat, Mohsen; Coronado-Hernández, Oscar Enrique; Fuertes-Miquel, Vicente S.; Viseu, Maria Teresa; Ramos, Helena M.(Taylor & Francis, 2018-11-14)
[EN] The prediction of the pressure inside the air pocket in water pipelines has been the topic for a lot of research works. Several aspects in this field have been discussed, such as the filling and the emptying procedures. ...
Besharat, Mohsen; Coronado-Hernández, Oscar Enrique; Fuertes-Miquel, Vicente S.; Viseu, Maria Teresa; Ramos, Helena M.(Taylor & Francis, 2019-08-06)
[EN] The occurrence of sub-atmospheric pressure in the drainage of pipelines containing an air pocket has been known as a major cause of several
serious problems. Accordingly, some system malfunction and pipe buckling ...
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 ...
Coronado-Hernández, Oscar E.; Besharat, Mohsen; Fuertes-Miquel, Vicente S.; Ramos, Helena M.(MDPI AG, 2019-08-31)
[EN] The filling process in water pipelines produces pressure surges caused by the compression
of air pockets. In this sense, air valves should be appropriately designed to expel sufficient air to
avoid pipeline failure. ...
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 ...
Coronado-Hernández, Oscar Enrique; Vicente S. Fuertes-Miquel; Besharat, Mohsen; Ramos, Helena M.(MDPI, 2017-02)
The emptying procedure is a common operation that engineers have to face in pipelines.
This generates subatmospheric pressure caused by the expansion of air pockets, which can produce
the collapse of the system depending ...
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 ...
Ramos, Helena M.; Kuriqui, Alban; Besharat, Mohsen; Creaco, Enrico; Tasca, Elias; Coronado-Hernández, Oscar E.; Pienika, Rodolfo; Iglesias Rey, Pedro Luís(MDPI AG, 2023-03)
[EN] One of the main factors contributing to water scarcity is water loss in water distribution systems, which mainly arises from a lack of adequate knowledge in the design process, optimization of water availability, and ...
Coronado-Hernández, Oscar Enrique; Fuertes-Miquel, Vicente S.; Besharat, Mohsen; Ramos, Helena M.(Taylor & Francis, 2018)
[EN] An air pocket's behaviour inside of a pipeline during transient conditions is of great importance due to its effect on the safety of the hydraulic system and the complexity of modeling its behaviour. The emptying ...
Paternina-Verona, Duban A.; Coronado-Hernández, Oscar E.; Espinoza-Román, Héctor G.; Besharat, Mohsen; Fuertes-Miquel, Vicente S.; Ramos, Helena M.(MDPI AG, 2022-11)
[EN] Air valves operate as protection devices in pipelines during drainage processes in order to mitigate vacuum pressures and control the transient flows. Currently, different authors have proposed one-dimensional models ...