Investigation of effects of scale and surface roughness on efficiency of water jet pumps using CFD

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dc.contributor.authorAldaş, Kemal
dc.contributor.authorYapıcı, Rafet
dc.date.accessioned13.07.201910:50:10
dc.date.accessioned2019-07-29T19:27:48Z
dc.date.available13.07.201910:50:10
dc.date.available2019-07-29T19:27:48Z
dc.date.issued2014
dc.departmentMühendislik Fakültesi
dc.description.abstractComparing to pumps with moving parts water-jet pumps have a lower efficiency and surface roughness is an important factor for these types of pumps. The aim of this simulation study is to numerically determine how the scaling-up, downscaling and change in the absolute and relative roughness would impact on the energy efficiency of the pumps, using a commercial computational fluid dynamics (CFD) solver ANSYS FLUENT. In order to select the turbulence model that produces the predictions closest to the actual data from four turbulence models, a preliminary study was conducted on a full-scale jet pump. Using the transition SST model, which gives the best results among all the models, the effects of scale and roughness on the performance of the pumps were investigated in the scale range from 1/4 to 20/1. The optimum efficiencies for different area ratios over a wide range were determined according to the scale and size of roughness. It was seen that the efficiency increases significantly up to a given scale size at a constant absolute roughness, while it is generally independent of the scale size at constant relative roughness. The relative efficiency for the area ratio 5.92 reduces to 60% at the relative roughness value of 0.05. Moreover, CFD appears to be the most appropriate tool for model studies of jet pumps.
dc.description.sponsorshipSelcuk University under the BAP Project [11201037]
dc.description.sponsorshipThis research was supported by Selcuk University under the BAP Project No: 11201037.
dc.identifier.doi10.1080/19942060.2014.11015494
dc.identifier.endpage25en_US
dc.identifier.issn1994-2060
dc.identifier.issn1997-003X
dc.identifier.issue1en_US
dc.identifier.scopusqualityQ1
dc.identifier.startpage14en_US
dc.identifier.urihttps://doi.org/10.1080/19942060.2014.11015494
dc.identifier.urihttps://hdl.handle.net/20.500.12451/5932
dc.identifier.volume8en_US
dc.identifier.wosWOS:000332216500002
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherHong Kong Polytechnic University
dc.relation.ispartofEngineering Applications of Computational Fluid Mechanics
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/embargoedAccess
dc.subjectJPump
dc.subjectScale Effect
dc.subjectCFD
dc.subjectFlow Simulation
dc.subjectRoughness Effect
dc.titleInvestigation of effects of scale and surface roughness on efficiency of water jet pumps using CFD
dc.typeArticle

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