学科分类
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4 个结果
  • 简介:Anumericalanalysisofnon-Newtonianfluidflowinnon-planararterywithbifurcationwasperformedbyusingafiniteelementmethodtosolvethethree-dimensionalNavier-Stokesequationscoupledwiththenon-Newtonianconstitutivemodels,includingCarreau,CrossandBinghammodels.Theobjectiveofthisstudyistoinvestigatetheeffectsofthenon-Newtonianpropertiesofbloodaswellascurvatureandout-of-planegeometryinthenon-planardaughtervesselsonthevelocitydistributionandwallshearstress.Theresultsofthisstudysupporttheviewthatthenon-planarityofbloodvesselsandthenon-Newtonianpropertiesofbloodareofimportantinhemodynamicsandplayasignificantroleinvascularbiologyandpathophysiology.

  • 标签: 非线性牛顿流体 血液动力学 颈动脉分流 数值分析 非平面动脉 病理生理学
  • 简介:Athree-dimensionalmathematicalmodelforcalculatingthesteadyflowofcircularnon-buoyantturbulentsurfaceinacoflowingchannelispresentedinthispaper.Forclosingthecontrolequations,theκ-εturbulencemodelisusedinthemathematicalmodel.Thewall-functionmethodisemployedtotreatthewallboundaryconditionatthebottomplane.TheclosedcontrolequationsarediscretizedbyusingHybridFiniteAnalyticMethod(HFAM)onanon-uniformstaggeredgridsystem.Thenumericalresultsareobtainedfordifferentratioofthejetvelocitytothecoflowingvelocity.Thecomparisonwithexperimentaldatashowsgoodagreement.

  • 标签: SURFACE jets coflowing STREAMS 3-dimensional hybrid