简介：Icing(oriceaccretion)isaphenomenoninwhichsuper-cooledwaterdropletsimpingeandaccreteonabody.Itiswellknownthaticeaccretiononbladesandvanesleadstoperformancedegradationandhascausedsevereaccidents.Althoughvariousanti-icinganddeicingsystemshavebeendeveloped,suchaccidentsstilloccur.Therefore,itisimportanttoclarifythephenomenonoficeaccretiononanaircraftandinajetengine.However,flighttestsforiceaccretionareveryexpensive,andinthewindtunnelitisdifficulttoreproduceallclimateconditionswhereiceaccretioncanoccur.Therefore,itisexpectedthatcomputationalfluiddynamics(CFD),whichcanestimateiceaccretioninvariousclimateconditions,willbeausefulwaytopredictandunderstandtheiceaccretionphenomenon.Ontheotherhand,althoughtheicingcausedbysuper-cooledlargedroplets(SLD)isverydangerous,thenumericalmethodhasnotbeenestablishedyet.ThisiswhySLDicingischaracterizedbysplashandbouncephenomenaofdropletsandtheyareverycomplexinnature.Inthepresentstudy,wedevelopaniceaccretioncodeconsideringthesplashandbouncephenomenatopredictSLDicing,andthecodeisappliedtoafanrotorblade.ThenumericalresultswithandwithouttheSLDicingmodelarecompared.Throughthisstudy,theinfluenceoftheSLDicingmodelisnumericallyclarified.