Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/43131
DC FieldValueLanguage
dc.contributor.authorLu, J.Y.en_US
dc.contributor.author盧昭堯zh_TW
dc.contributor.authorChen, J.Y.en_US
dc.contributor.authorChang, F.H.en_US
dc.contributor.authorLu, T.F.en_US
dc.date1998zh_TW
dc.date.accessioned2014-06-06T08:09:35Z-
dc.date.available2014-06-06T08:09:35Z-
dc.identifier.issn0733-9429zh_TW
dc.identifier.urihttp://hdl.handle.net/11455/43131-
dc.description.abstractAn understanding of the effect of rainfall on the characteristics of shallow flow is needed for the proper modeling of the physical processes related to erosion and sedimentation. In this study, the turbulence characteristics of shallow rain-impacted flow over a smooth bed were investigated using a fiber-optic laser Doppler velocimeter and a specially designed artificial raindrop simulator. An empirical formula was derived to predict the variation of momentum correction factor beta with the parameters related to the flow and the rainfall characteristics. Statistical correlations were developed successfully to predict the distributions of both the longitudinal and the vertical turbulence intensities for rainfalls with different intensities and raindrop diameters. The statistical characteristics of the Reynolds stress under different rainfall conditions also were analyzed. Analysis of the energy spectrum of the longitudinal velocity component indicated that the energy for the largescale eddies (low frequencies) was increased significantly because of the mixing effect of the raindrop impact for the region near the water surface.en_US
dc.language.isoen_USzh_TW
dc.relationJournal of Hydraulic Engineering-Asceen_US
dc.relation.ispartofseriesJournal of Hydraulic Engineering-Asce, Volume 124, Issue 12, Page(s) 1242-1252.en_US
dc.relation.urihttp://dx.doi.org/10.1061/(asce)0733-9429(1998)124:12(1242)en_US
dc.titleCharacteristics of shallow rain-impacted flow over smooth beden_US
dc.typeJournal Articlezh_TW
dc.identifier.doi10.1061/(asce)0733-9429(1998)124:12(1242)zh_TW
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextno fulltext-
item.cerifentitytypePublications-
item.grantfulltextnone-
item.languageiso639-1en_US-
item.openairetypeJournal Article-
Appears in Collections:土木工程學系所
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