摘要
Alargeeddysimulation(LES)oftheflowsaroundanunderwatervehiclemodelatintermediateReynoldsnumbersisperformed.TheunderwatervehiclemodelistakenastheDARPASUBOFFwithfullappendages,wheretheReynoldsnumberbasedonthehulllengthis1.0×105.Animmersedboundarymethodbasedonthemoving-least-squaresreconstructionisusedtohandlethecomplexgeometricboundaries.Theadaptivemeshrefinementisutilizedtoresolvetheflowsnearthehull.Theparallelscalabilitiesoftheflowsolveraretestedonmesheswiththenumberofcellsvaryingfrom50millionto3.2billion.Theparallelsolverreachesnearlylinearscalabilityfortheflowsaroundtheunderwatervehiclemodel.Thepresentsimulationcapturestheessentialfeaturesofthevortexstructuresnearthehullandinthewake.Bothofthetime-averagedpressurecoefficientsandstreamwisevelocityprofilesobtainedfromtheLESareconsistentwiththecharacteristicsoftheflowspassanappendedaxisymmetricbody.Thecodeefficiencyanditscorrectpredictionsonflowfeaturesallowustoperformthefull-scalesimulationsontensofthousandsofcoreswithbillionsofgridpointsforhigher-Reynolds-numberflowsaroundtheunderwatervehicles.
出版日期
2016年06月16日（中国期刊网平台首次上网日期，不代表论文的发表时间）
