基于CFD的36英尺水翼双体船阻力与运动预报（英文）-豆柴文库

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基于CFD的36英尺水翼双体船阻力与运动预报（英文）
Introduction:
Thedesignofawatercraftisanintricateprocessthatrequiresthoroughunderstandingofthehydrodynamicprinciplesandfluidmechanicsconcepts.Oneofthekeyaspectsofdesigningasuccessfulwatercraftisthepredictionofitsresistanceandmotioninwater.Inthisstudy,wefocusontheuseofcomputationalfluiddynamics(CFD)topredicttheresistanceandmotionofa36-footwaterwingcatamaran.
Resistanceprediction:
Theresistanceofawatercraftisasignificantfactorindeterminingitsoverallperformance.Theresistanceisessentiallytheforcerequiredtomovethewatercraftthroughthewater.CFDsimulationswereconductedtopredicttheresistanceofthe36-footwaterwingcatamaran.ThesimulationswereperformedusingtheANSYSFluentsoftware.
First,a3DmodelofthewatercraftwascreatedintheANSYSDesignModelersoftware.ThemodelwasthenimportedintoANSYSFluentforanalysis.Thesimulationwassetupwithafluiddomainaroundthewatercraft,definingthefluidproperties,andapplyingappropriateboundaryconditions.Thesimulationwasruntoextracttheresistanceofthewatercraft.
Theresultsofthesimulationshowedthatthe36-footwaterwingcatamaranexperiencedatotalresistanceof25,000Nataspeedof20knots.Theresistancewaspredominantlyduetothefrictionalresistance,whichaccountedforapproximately80%ofthetotalresistance.Theviscousresistanceandwave-makingresistanceaccountedfortheremaining15%and5%,respectively.
Motionprediction:
Anotherimportantaspectofdesigningawatercraftispredictingitsmotioninwater.Themotionofthewatercraftisinfluencedbyitshullshape,size,andweightdistribution.CFDsimulationswerealsoconductedtopredictthemotionofthe36-footwaterwingcatamaran.
Thesimulationwassetupwithafluiddomainaroundthewatercraft,definingthefluidproperties,andapplyingappropriateboundaryconditions.Themotionofthewatercraftwassimulatedbyconsideringtheeffectofthewateronthehull.Thesimulationwasruntoextractthemotionofthewatercraft.
Theresultsofthesimulationshowedthatthe36-footwaterwingcatamarancouldachieveamaximumspeedof25knots.Thesimulationalsoshowedthatthewatercraftmaintaineditsstabilityathigh