Contribution of tuned liquid column gas dampers to the performance of offshore wind turbines under wind, wave, and seismic excitations-中国期刊网

摘要 Themainintentionofthepresentstudyistoreducewind,wave,andseismicinducedvibrationsofjackettypeoffshorewindturbines(JOWTs)throughanewlydevelopedvibrationabsorber,calledtunedliquidcolumngasdamper(TLCGD).UsingaSimulink-basedmodel,ananalyticalmodelisdevelopedtosimulateglobalbehaviorofJOWTsunderdifferentdynamicexcitations.ThestudyisfollowedbyaparametricstudytoexploreefficiencyoftheTLCGDintermsofnacelleaccelerationreductionunderwind,wave,andearthquakeloads.StudyresultsindicatethatoptimumfrequencyoftheTLCGDisratherinsensitivetoexcitationtype.Inaddition,whilethegaininvibrationcontrolfromTLCGDswithhighermassratiosisgenerallymorepronounced,heavyTLCGDsaremoresensitivetotheirtunedfrequencysuchthatill-regulatedTLCGDwithhighmassratiocanleadtodestructiveresults.ItisrevealedthatawellregulatedTLCGDhasnoticeablecontributiontothedynamicresponseoftheJOWTunderanyexcitation.

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Contribution of tuned liquid column gas dampers to the performance of offshore wind turbines under wind, wave, and seismic excitations

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Contribution of tuned liquid column gas dampers to the performance of offshore wind turbines under wind, wave, and seismic excitations

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