Please use this identifier to cite or link to this item: https://doi.org/10.1007/s00348-006-0124-y
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dc.titleEffects of jet velocity profiles on a round jet in cross-flow
dc.contributor.authorNew, T.H.
dc.contributor.authorLim, T.T.
dc.contributor.authorLuo, S.C.
dc.date.accessioned2014-06-17T06:19:22Z
dc.date.available2014-06-17T06:19:22Z
dc.date.issued2006-06
dc.identifier.citationNew, T.H., Lim, T.T., Luo, S.C. (2006-06). Effects of jet velocity profiles on a round jet in cross-flow. Experiments in Fluids 40 (6) : 859-875. ScholarBank@NUS Repository. https://doi.org/10.1007/s00348-006-0124-y
dc.identifier.issn07234864
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/60112
dc.description.abstractThis paper reports the results of an experimental investigation on the effects of jet velocity profiles on the flow field of a round jet in cross-flow (JICF) using laser-induced fluorescence and digital particle-image velocimetry techniques (DPIV). Tophat and parabolic jets were considered, with the momentum ratios (MRs) ranging from 2.3 to 5.8. Results show that the thicker shear layer associated with a parabolic JICF is able to delay the formation of leading-edge and lee-side vortices when compared to the tophat JICF at the corresponding MR. As a result, there is an increase in jet penetration and a reduction in the near-field entrainment of cross-flow fluid by a parabolic JICF. Also, the less coherent nature of the leading-edge and lee-side vortices in a parabolic JICF is more likely to break up sporadically into smaller-scaled vortices. In addition, DPIV results show that a parabolic JICF exhibits not only a faster velocity recovery of cross-flow fluid at the jet lee-side than the corresponding tophat JICF, it also consistently registers a higher magnitude of the peak average vorticity than the tophat JICF for all MR considered. Despite these differences, the time-averaged flow topology for both cases share many salient features.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1007/s00348-006-0124-y
dc.sourceScopus
dc.typeArticle
dc.contributor.departmentMECHANICAL ENGINEERING
dc.contributor.departmentTEMASEK LABORATORIES
dc.description.doi10.1007/s00348-006-0124-y
dc.description.sourcetitleExperiments in Fluids
dc.description.volume40
dc.description.issue6
dc.description.page859-875
dc.description.codenEXFLD
dc.identifier.isiut000239549100004
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