简介：ResultsofseveralLargeEddySimulations(LES)ofopenchannelflowswithnon-submergedvegetationarepresentedinthisarticle.Itisshownthatthevegetationcanmaketheflowstructureinthemainstreamdirectionuniformforbothsupercriticalandsubcriticalflows.Forsubcriticalflows,theLESresultsoftheensemble-averageoftime-averagedvelocitydistributionsatfourverticalsectionsaroundasingleplantareingoodagreementwithmeasurements.Thevelocityseesdoublepeaksattheupperandlowerpositionsofflows.Forsupercriticalflows,theensemble-averagevelocitiesseesomediscrepancybetweenLESandmeasurementresults.Somesecondaryfloweddiesappearnearthesingleplant,andtheyjustlocateinthepositionsofthedoublepeaksinstream-wisevelocityprofiles.ItisalsofoundthatthevegetationdragcoefficientdeceasesastheFroudenumberincreases.