Please use this identifier to cite or link to this item: https://doi.org/10.1115/1.1514204
Title: Air entrainment effects on the pressure transients of pumping systems with weir discharge chamber
Authors: Lee, T.S. 
Ngoh, K.L.
Issue Date: Dec-2002
Source: Lee, T.S., Ngoh, K.L. (2002-12). Air entrainment effects on the pressure transients of pumping systems with weir discharge chamber. Journal of Fluids Engineering, Transactions of the ASME 124 (4) : 1034-1043. ScholarBank@NUS Repository. https://doi.org/10.1115/1.1514204
Abstract: This paper presents a new model for the study of air entrainment on the extreme pressure surges in pumping systems. For the present fluid system considered with a weir discharge chamber, numerical investigations showed that, with the proposed model of the air entrainment, reasonable predictions of transient pressures with proper phasing and attenuation of pressure peaks can be obtained. The results obtained are consistent with observations from field measurements made when the pumps were operating at low pump cutout levels where air entrainment due to attached surface vortex and falling jets from the inflow near the pump intake were present. Further studies were also made on the design characteristics of the weir discharge chamber on the extreme pressure transients for the unsteady flow in the pipeline system with various degrees of air entrainment.
Source Title: Journal of Fluids Engineering, Transactions of the ASME
URI: http://scholarbank.nus.edu.sg/handle/10635/59396
ISSN: 00982202
DOI: 10.1115/1.1514204
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