简介：Thenumericalmodellingoftheinteractionsbetweenwaterwavesandfloatingstructuresissignificantfordifferentareasofthemarinesector,especiallyseakeepingandpredictionofwave-inducedloads.SeakeepinganalysisinvolvingsevereflowfluctuationsisstillquitechallengingevenfortheconventionalRANSmethod.Particlemethodhasbeenviewedasalternativeforsuchanalysisespeciallythoseinvolvingdeformableboundary,wavebreakingandfluidfragmentationaroundhullshapes.Inthispaper,theweaklycompressiblesmoothedparticlehydrodynamics(WCSPH),afullyLagrangianparticlemethod,isappliedtosimulatethesymmetricradiationproblemforastationarybargetreatedasaflexiblebody.Thisiscarriedoutbyimposingprescribedforcedsimpleharmonicoscillationsinheave,pitchandthetwo-andthree-nodedistortionmodes.Theresultant,radiationforcepredictions,namelyaddedmassandfluiddampingcoefficients,arecomparedwithresultsfrom3-Dpotentialflowboundaryelementmethodand3-DRANSCFDpredictions,inordertoverifytheadoptedmodellingtechniquesforWCSPH.WCSPHwerefoundtobeinagreementwithmostresultsandcouldpredictthefluidactionsequallywellinmostcases.
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