潜艇主艇体三维粘性流场数值计算方法研究

潜艇主艇体三维粘性流场数值计算方法研究Abstract:This paper presents a numerical simulation of the three-dimensional visc

潜艇主艇体三维粘性流场数值计算方法研究 Abstract: Thispaperpresentsanumericalsimulationofthe three-dimensionalviscousflowfieldofthemainsubmarinehull. Thestudyfocusesonthecomputationalmethodsusedto simulatetheflowfieldaroundthehull.Thestudyusescommercial ComputationalFluidDynamics(CFD)softwareANSYSFluentto performnumericalsimulationsofanidealizedsubmarinehull. Introduction Submarinesarecomplexstructuresthatrequireadvanced engineeringdesignandprototypingprocesses.Acrucialpartof submarinedesignisthecalculationoftheflowfieldaroundthe submarinehull.Theviscousflowfieldaroundthesubmarinehullis notwellunderstood,andnumericalsimulationisthemostreliable waytostudyit.Thispaperpresentsastudyofthenumerical simulationoftheviscousflowfieldaroundasubmarinehull.The aimistodevelopanaccurateandefficientnumericalmodelfor predictingtheflowfieldaroundthehull. Methodology ThenumericalsimulationwasperformedusingtheANSYS Fluentsoftwarepackage.Thestudytookanidealizedsubmarine hullasthebasisforthesimulation.Thegeometryofthe submarinehullwasobtainedthroughaseriesofsketchesthat wereimportedintoANSYSFluent.Theboundaryconditionsofthe simulationincludedinletvelocity,pressureoutlet,andwall boundaryconditions. Anunstructuredmeshwasgeneratedforthesimulationusing theANSYSMeshingtool.Themeshqualitywasevaluatedusing theANSYSMeshingqualitycontroltool.Thesimulationwas carriedoutusingthefinitevolumemethod.TheNavier-Stokes equationsweresolvedusingtheReynolds-averaged Navier-Stokes(RANS)turbulencemodel. Results Thenumericalsimulationproducedaccurateresultsregarding theflowfieldaroundthesubmarinehull.Thefluidvelocityfield aroundthehullwasanalyzedandthepressuredistributionaround