应用FINEMarine的航行Wigley船的辐射数值模型-豆柴文库

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应用FINEMarine的航行Wigley船的辐射数值模型
Introduction
Radiatednoiseisamajorconcerninthemarineindustry,asithasbeenlinkedtoadverseeffectsonmarinemammalsandotheraquaticlife.Theincreasinguseofmarinetransportationhasledtoacorrespondingincreaseintheamountofradiatednoiseintheoceans.Thishaspromptedtheuseofnumericalmodelstopredicttheradiatednoiseofshipsindifferentoperatingconditions.OnesuchmodelistheWigleyhull-formmodel,whichisdiscussedinthispaper.
Wigleyhull-formmodel
TheWigleyhull-formmodelisanumericalmodelusedforpredictingtheradiatednoiseofships.ThemodelisbasedontheWigleyshipdesign,whichisaslender,well-proportionedhullformthatminimizesdragandturbulence.Themodelisalsobasedontheassumptionthattheradiatednoiseofashipisprimarilycausedbytheturbulentflowaroundthehull.Themodelcalculatesthenoiselevelsatdiscretefrequenciesalongthelengthoftheship,aswellastheoverallnoiselevel.
TheWigleyhull-formmodelhasbeenimplementedintheFINEMarinesoftware,whichisusedtosimulateshiphydrodynamicsandnoiseperformance.Themodeliscalibratedusingexperimentaldatafromtowing-tanktestsandsea-trials,andcanbeusedtopredicttheradiatednoiseofashipinanyoperatingcondition.
ApplicationoftheWigleyhull-formmodel
TheWigleyhull-formmodelhasbeenusedinnumerousstudiestopredicttheradiatednoiseofships.Forexample,themodelhasbeenusedtopredictthenoiselevelsofacontainershipindifferentoperatingconditions,suchasspeed,draft,andseastate.Themodelhasalsobeenusedtocomparethenoiselevelsofdifferentshipdesigns,andtooptimizethedesignofshipsforlownoiseemission.
Inonestudy,theWigleyhull-formmodelwasusedtostudytheeffectsofbulbousbowsontheradiatednoiseofships.Thebulbousbowisacommonfeatureofmodernshipdesign,andisintendedtoreducewave-makingresistanceandimprovefuelefficiency.However,thepresenceofabulbousbowcanalsoaffecttheflowaroundthehullandtheresultingnoiselevels.Thestudyfoundthattheadditionofabulbousbowtoashipdesignresultedinanincreaseintheradiatednoiseatlowfrequencies,butadecreaseinnoiseathigherfrequencies.
Conclusion
TheWigleyhull-formmodelisaneffectiveto