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dc.contributor.authorGhoma, Mohamed Ibrahem*
dc.contributor.authorHussain, Khalid*
dc.contributor.authorTait, Simon J.*
dc.date.accessioned2016-11-23T18:25:38Z
dc.date.available2016-11-23T18:25:38Z
dc.date.issued2014
dc.identifier.citationGhoma M, Hussain K and Tait SJ (2014) The experimental and numerical approach of two-phase flows by wall jets on rough beds in open channel flow. In: Proceedings of the World Congress on Engineering. 2-4 Jul 2014, London, UK. Vol II.
dc.identifier.urihttp://hdl.handle.net/10454/10642
dc.descriptionYes
dc.description.abstractThis paper presents the results of investigations carried out to study the effect of horizontal wall jets on a fixed rough bed in an open channel. The study used both numerical and experimental approaches. The numerical and experimental studies are compared for validation. The main objective of this study is to understand the effect of wall jets on a horizontal fixed rough bed in an open channel. The experimental study investigated the effect of wall jets on a fixed horizontal bed, with a known roughness in an open channel flume. A sid-looking Acoustic Doppler Velocimetry (ADV) was used to measure the velocity profile of the flow at different flow zones. The wave monitor was used to measure the free surface during the experiments. Computational fluid dynamics CFD simulations were conducted in a rectangular channel to compare with the laboratory tests using the volume of fluid VOF multiphase method and K- ࢿ model. The two phase (water and air) was used in this study. Computer simulations for the model were used to predict the fluid horizontal velocity (u) revealing the characteristics of the wall jet over different flow zones (developing, fully developed and recovering zones). The results showed that the velocity profiles distribution in the stream wise direction in the channel were reasonable. The reverse velocity was close to the wall jet and the maximum reverse velocity was observed near the water surface. Also the results showed that the depression was close to the wall jet. The agreement between the results obtained from the numerical and the experimental data were reasonable.
dc.relation.isreferencedbyhttp://www.iaeng.org/publication/WCE2014/WCE2014_pp1257-1261.pdf
dc.subjectVOF method; Two-phase flow; ADV
dc.titleThe experimental and numerical approach of two-phase flows by wall jets on rough beds in open channel flow
dc.status.refereedYes
dc.typeConference Paper
dc.type.versionPublished version
refterms.dateFOA2018-07-27T01:46:29Z


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