简介：Itiswellknownthatsharkskinsurfacecaneffectivelyinhabittheoccurrenceofturbulenceandreducethewallfriction,butinordertounderstandthemechanismofdragreduction,onehastosolvetheproblemoftheturbulentflowongrooved-scalesurface,andinthatrespect,thedirectnumericalsimulationisanimportanttool.Inthisarticle,basedontherealbiologicalsharkskin,themodelofrealsharkskinisbuiltthroughhigh-accuratescanninganddataprocessing.Theturbulentflowonarealsharkskiniscomprehensivelysimulated,andbasedonthesimulation,thedragreductionmechanismisdiscussed.Inaddition,inordertovalidatethedrag-reducingeffectofsharkskinsurface,actualexperimentswerecarriedoutinwatertunnel,andtheexperimentalresultsareapproximatelyconsistentwiththenumericalsimulation.