Resumo

VILLEGAS-LEON, José J et al. Analytical Expressions of the Coefficient of Energy Losses in Diameter Reduction Devices on Forced Regime. rev.ing. [online]. 2015, n.43, pp.24-31. ISSN 0121-4993.  https://doi.org/10.16924/riua.v0i43.861.

Analytical expressions of the energy loss coefficient for abrupt and gradual diameter reduction devices, operating in ducts on forced regime are obtained. For this approach, a state of the art was carried out where it was identified that the traditionally utilized methods (that assess the loss of the devices) needed formulas, tables and/or graphs when estimating the K coefficient. These results were used as data in multiple linear regression methods until a representative equation for each case study was obtained. These equations constitue a reliable tool to determine the loss of the K coefficient without having to manipulate tables and graphs.

Palavras-chave : Dynamics of Fluids; Hydraulic Losses; Hydraulic Modeling; Losses Coefficient.

        · resumo em Espanhol     · texto em Espanhol     · Espanhol ( pdf )