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Browsing by Author "Besharat, Mohsen"

Now showing items 1-6 of 6

Backflow air and pressure analysis in emptying a pipeline containing an entrapped air pocket

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. ...
Computational fluid dynamics for sub-atmospheric pressure analysis in pipe drainage

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 ...
Effect of a commercial air valve on the rapid filling of a single pipeline: a numerical and experimental analysis

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. ...
Experimental and Numerical Analysis of a Water Emptying Pipeline Using Different Air Valves

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 ...
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 ...
Subatmospheric pressure in a water draining pipeline with an air pocket

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 ...