摘要
ResultsofseveralLargeEddySimulations(LES)ofopenchannelflowswithnon-submergedvegetationarepresentedinthisarticle.Itisshownthatthevegetationcanmaketheflowstructureinthemainstreamdirectionuniformforbothsupercriticalandsubcriticalflows.Forsubcriticalflows,theLESresultsoftheensemble-averageoftime-averagedvelocitydistributionsatfourverticalsectionsaroundasingleplantareingoodagreementwithmeasurements.Thevelocityseesdoublepeaksattheupperandlowerpositionsofflows.Forsupercriticalflows,theensemble-averagevelocitiesseesomediscrepancybetweenLESandmeasurementresults.Somesecondaryfloweddiesappearnearthesingleplant,andtheyjustlocateinthepositionsofthedoublepeaksinstream-wisevelocityprofiles.ItisalsofoundthatthevegetationdragcoefficientdeceasesastheFroudenumberincreases.
出版日期
2011年02月12日（中国期刊网平台首次上网日期，不代表论文的发表时间）
