CFD modelling of a pump intake

Truasheim, Barak (2011) CFD modelling of a pump intake. [USQ Project]

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Abstract

Traditionally the modelling of pumping station wet wells and pump intakes has been carried out using physical models. It is generally considered that provided physical
models are large enough the flow patterns identified and solutions developed to problems are reasonably reliable. This paper considers the use of computational fluid
dynamics (CFD) as an alternative tool to assist the engineer in the hydraulic design of pumping stations by comparing two alternate designs. Encouragingly, the results show CFD can be utilised to produce qualitative statements regarding pumping station performance. The CFD results compared the merits of modification to the inlet pipe
across four criteria specified in the standards for pump intake design (ANSI/HI 9.8- 1998); prediction of vortices, swirl angle, velocity distribution and air entrainment.
With regards to the prediction of vortices in the wet well, the applied CFD models perform well. However, the effectiveness of the models to capture velocity distribution
and highly swirling flows at pump intakes is debatable. Also, there is uncertainty as to the reliability of air entrainment results, where free surface effects are important. It is not yet claimed that CFD can replace physical modelling, but, it can provide a powerful tool to supplement the experience and hydraulic expertise of the pumping station designer.


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Item Type: USQ Project
Refereed: No
Item Status: Live Archive
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Agricultural, Civil and Environmental Engineering
Supervisors: Wandel, Andrew
Date Deposited: 10 Jan 2013 07:08
Last Modified: 03 Jul 2013 01:38
Uncontrolled Keywords: pump intake, CFD modelling
Fields of Research : 09 Engineering > 0915 Interdisciplinary Engineering > 091508 Turbulent Flows
URI: http://eprints.usq.edu.au/id/eprint/22697

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