Author(s): Joao Delgado; Didia I. C. Covas; Antonio Betamio De Almeida
Linked Author(s): João Nuno Gomes Borga Delgado, Dídia Isabel Cameira Covas, A.P. Betamio de Almeida
Keywords: Hydraulic transients; Pumping systems; Hydropneumatic vessel; Check valve
Abstract: The current paper aims to discuss the main uncertainties associated with the hydraulic transient modelling of pumping systems with and without surge protection. A numerical model was developed to describe the 1-D hydraulic transients in pumping systems and tested using transient pressure data collected from two laboratory hydraulic circuits. Transients were generated by the sudden stoppage of the pump due to power failure. Collected data were compared with the results of the numerical modelling and used to calibrate model parameters, and a good agreement was obtained. Some tests with the hydropneumatic vessel connected lead to higher pressure surges than when there was no protection in the system.
Year: 2014