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Numerical investigation of a single jet impingement on a flat surface using a cubic k-? non-linear eddy viscosity model, to predict the effect of cooling on gas turbine blades

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dc.citedby1
dc.contributor.authorMostafa N.A.en_US
dc.contributor.authorid24332354200en_US
dc.date.accessioned2023-12-29T07:54:07Z
dc.date.available2023-12-29T07:54:07Z
dc.date.issued2009
dc.description.abstractThe ability to accurately predict the effect of cooling on gas turbine blades is essential in designing the blades that will operate at extremely high temperature. The standard k-? linear eddy viscosity model is known to be inaccurate in predicting highly complex flows. Thus, a relatively new cubic k-? nonlinear eddy viscosity model was tested to ascertain whether it has improved the performance of eddy viscosity models. A single jet impingement on a flat plate with surface-to-nozzle distance of H/D = 6 was investigated numerically using a cubic k-? nonlinear eddy viscosity model of Craft et. al. [1] and high-Re k-? linear eddy viscosity model of Jones & Launder [2]. Both use standard wall-function to model the near-wall flow. Dynamic field profiles taken at certain distances away from the impingement point were compared with experimental results of Cooper et al. [3]. The heat transfer field results were compared with the experimental data of Baughn et al. [4]. The dynamic field results show that the cubic non-linear model gives a much better prediction than the linear model. The heat transfer results showed that the linear model over-predicted the heat transfer rate at the stagnation point whilst the non-linear model gave under-prediction due to a lower prediction of the turbulent kinetic energy at that region. �2009 IEEE.en_US
dc.description.natureFinalen_US
dc.identifier.ArtNo5398641
dc.identifier.doi10.1109/ICEENVIRON.2009.5398641
dc.identifier.epage231
dc.identifier.scopus2-s2.0-77949615353
dc.identifier.spage226
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-77949615353&doi=10.1109%2fICEENVIRON.2009.5398641&partnerID=40&md5=9d4cd1f483196429cea2f55df35a4e82
dc.identifier.urihttps://irepository.uniten.edu.my/handle/123456789/30828
dc.pagecount5
dc.sourceScopus
dc.sourcetitleICEE 2009 - Proceeding 2009 3rd International Conference on Energy and Environment: Advancement Towards Global Sustainability
dc.subjectCubic
dc.subjectEddy viscosity model
dc.subjectFlat surface
dc.subjectJet impingement
dc.subjectNon-linear
dc.subjectNumerical investigation
dc.subjectForecasting
dc.subjectGas turbine locomotives
dc.subjectGas turbines
dc.subjectHeat exchangers
dc.subjectHeat transfer
dc.subjectKinetic energy
dc.subjectSustainable development
dc.subjectTurbomachine blades
dc.subjectTurbulent flow
dc.subjectViscosity
dc.subjectWall flow
dc.subjectEddy viscosity model
dc.subjectFlat surfaces
dc.subjectJet impingement
dc.subjectNon-linear
dc.subjectNumerical investigations
dc.subjectMathematical models
dc.titleNumerical investigation of a single jet impingement on a flat surface using a cubic k-? non-linear eddy viscosity model, to predict the effect of cooling on gas turbine bladesen_US
dc.typeConference paperen_US
dspace.entity.typePublication
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