简介:ScaleeffectofISWsloadsonFloatingProductionStorageandOffloading(FPSO)isstudiedinthispaper.TheapplicationconditionsofKdV,eKdVandMCCISWstheoriesareusedinthenumericalmethod.ThedepthaveragedvelocitiesinducedbyISWsareusedforthevelocity-inletboundary.Threescalerationumericalmodelsλ=1,20and300wereselected,whichthescaleratioisthesizeratioofnumericalmodelstotheexperimentalmodel.Thecomparisonsbetweenthenumericalandformerexperimentalresultsareperformedtoverifythefeasibilityofnumericalmethod.Thecomparisonsbetweenthenumericalandsimplifiedtheoreticalresultsareperformedtodiscusstheapplicabilityofthesimplifiedtheoreticalmodelsummarizedfromtheloadexperiments.Firstly,thenumericalresultsofλ=1numericalmodelshowedagoodagreementwithformerexperimentalandsimplifiedtheoreticalresults.ItisfeasibletosimulatetheISWsloadsonFPSObythenumericalmethod.Secondly,thecomparisonsbetweentheresultsofthreescalerationumericalmodelsandexperimentalresultsindicatedthatthescaleratioshavemoresignificantinfluenceontheexperimentalhorizontalforcesthantheverticalforces.Thescaleeffectofhorizontalforcesmainlyresultsfromthedifferentviscosityeffectsassociatedwiththemodel’sdimension.Finally,throughthecomparisonsbetweenthenumericalandsimplifiedtheoreticalresultsforthreescaleratiomodels,thesimplifiedtheoreticalmodelofthepressuredifferenceandfrictionforcesexertedbyISWsonFPSOisappliedforlarge-scaleorfull-scaleFPSO.