转弯运动通气超空泡形态及流场结构数值研究.pdf

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1、第15卷第12期船舶力学V01．15No．122011年12月JournalofShipMechanicsDec．2011ArticleID：1007-7294(2011)12-1335-09NumericalResearchonVentilatedSupercavityShapeandFlowStructureintheTurningMotionZHANGGuang,YUKai-ping,ZHOUJing-jun(SchoolofAstronautics，HarbinInstituteofTechnology，Harbin150001

2、，China)Abstract：Forsupercavitatingvehicle，thepredictionofcavityshapeintheprocessofmaneuverisanurgentproblemtobeinvestigated．Inthispaper，intheframeworkoftwo-fluidmuhiphageflowmodel，athreedimensionalnumericalmodelwagpresentedforsolvingventilatedcavitatingflowattheturningmo

3、tion．BysolvingtheRANSequationsandSST(ShearStressTransport)turbulencee。quations，theventilatedsupercavityofdisccavitatorwaspredictdandcomparedwiththeresultsofLogvinovichindependenceprincipleofthecavitysectionexpansion，thecomparsionresultsverifiedtheaccuracyofnumericalmodel

4、．Onthisbasis．theinfluenceofdifferentturningradiusestothecav—ityshapeWaganalyzedandtheflowstructureWagalsoinvestigatedundertheconditionofdifferentFroudenumber．Keywords：turningmotion；ventilatedmpercavity；twofluidmultiphaseflowmodel；numericalsimulationCI．Cnumber：，Iv131．3+2D

5、ocumentcode：A1IntroductionSupercavitationhasbecomeahottopicduetoitspotentialtosignificantlyenhancethespeedofunderseaweaponsandvehicles．Unliketraditionalmotionmodeofunderwatervehiclemotionmode，allormostofthesupercavitatingvehiclesurfacearesurroundedbycavity，andonlvthecavi

6、tatorandpartofthetailincontactwithwater．Theforcestateandstabilityofve-hiclearecloselyrelatedwithdeformationofsupercavityshape[．】．Basedonalargenumberofexperimentalresearches，foreignscl：olarssummarizedaseriesofformulaforcalculatingcavityshapeandanalyzedthemainfactorsthataf

7、fectthecavityshapeintheearlystagerS-31；recently，usingparticleimagevelocimetrytestsystem(PIV)anda-coustictestsystem，thewakedetailsofventilatedcavityweredecribedf明andthepropertiesofthecavitycontentsweremeasuredl53．ThesestudieshaveimprovedourunderstandingofthepIlysicsphenom

8、ena．Inaddition，Chineseresearchershaveconductedcertainexperimentsandnumericalsimulationsonseveralaspects