Inordertogetsomeusefulparametersforgridgenerationofcatamaran,theCFDsoftwareFLUENTisusedtoinvestigatethemaineffectsofgridgenerationonflowfieldcalculation.Theinfluencesofsomeelementsareinvestigatedwithaseriesofcalculationsinthepresentpaper,andsomealterativesareproposed.Theproposedalterativesbasedontheanalysisoftheeffectsareusedforacatamaranresistancecalculation,comparisonsofthecalculatedresultswithexperimentaldatashowgoodagreement.Itshowsthattheresearchresultofthispaperisusefulforthenumericalcalculationofcatamaran.
