学科分类
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1 个结果
  • 简介:ThispaperpresentsthenumericalinvestigationofthedistributionofinertialsedimentparticlesintheturbulentboundarylayerofanopenchannelflowwiththeparticleStokesnumberrangingfrom0.6to20.4.Themethodologyisacombinationofthreenumericalapproaches,i.e.directnumericalsimulationofturbulentflow,thepoint-particleimmersedboundarymethod,andthediscreteparticlemethod.ByapplyingtheVorono?analysis,thepreferentialconcentrationcharacteristicsofsedimentparticleswereinvestigatedquantitatively.ItwasfoundthatthenormalizedareaoftheVorono?cellsfollowsalognormalparticledistribution.Theinertialsedimentparticlesdistributedunevenlyintheturbulentboundarylayerandtheunevenness,governedbytheparticleStokesnumber,wasmoresignificantastheparticleStokesnumberapproachesunity.Theinertialsedimentparticlesintheturbulentboundarylayeraccumulatedpreferentiallyinstreamwise-alignedstreakystructuresandthispatternwaslesssignificantwithincreasingparticleStokesnumber.

  • 标签: INERTIAL sediment particles TURBULENT boundary layers