简介:Tosolvethedimensionallimitationsofphysicalmodelsintests,anequivalentwaterdepthtruncateddesignforaclassicalSPARworkingin913mwaterwasinvestigated.Thewaterdepthwasreducedto736mandthento552m.Asthiswasdone,themooringlinelengths,EAvalue,andmasspermeterwereadjusted.Truncationrulesandformulasforparametersandtruncationfactorswereproposed.SPARstaticcharacteristicsweremadetobeconsistentwiththoseatfullwaterdepth.Thenfurthertime-domaincoupledanalysiswascarriedoutfortheSPARwhenthemooringsystemexperiencedwaves.Themooringlinesweresimulatedbyquasi-staticmethod.Globalresponsesandmooringlineforceswerefoundtoagreewellwithtestresultsforaprototypeatthatwaterdepth.Thetruncationmethodprovedtoberobustandreliable.
简介:GiventherecentsuccessinthedevelopmentofseveralsubmersiblesinChina,people’sinterestinthehistoryofsubmersibledevelopmentisincreasing.ThispaperpresentsthehistoryofsubmersibledevelopmentinChina,whichcanbebrieflydividedintothreeperiods.Thefirstoneistheearlyperiodofhardship(1971–2000).ManyprototypesubmersiblesofHOVs,ROVs,andAUVsweredevelopedatthistime,butthemainachievementwastheestablishmentofspecialresearchorganizationsandthetrainingofresearchanddevelopmentpersonnel.Thesecondperiodcanberegardedasthequickdevelopmentperiod(2001–2015).Allcurrentlyusedsubmersiblesweredevelopedduringthisperiod.Themostremarkableachievementwasthesuccessfuldevelopmentof7000m-deepmannedsubmersibleBJiaolong.^Thethirdperiodaimstodevelop11000msubmersiblesforchallengingthefulloceandepth(2016–2020).Inthisperiod,twounmannedsubmersiblesandtwomannedsubmersibleswillbethesignificantindicatorsofachievement.Ifthis5-yearplancanbesuccessfullycompleted,Chinacanplayasignificantroleintheinvestigationofthedeepestpartoftheoceans,namely,thehadaltrenches(6500–11000m).
简介:基于船舶航行安全可靠的考虑,分析国内外船舶电力系统电能质量研究方法的现状,阐述电能质量研究方法,提出电能质量的评估与改善方法和技术手段.结合全电力推进船舶电力系统的特性,建立构建船舶电能质量监测评估系统,重点研究大型负载、船舶操纵及特殊工况时电网参数的影响,借助电能质量的评估与性能方法和技术手段,进行电能质量改善的仿真研究.
简介:1.航海教育立法研究;2.新时代中国航海教育发展战略;3.航海教育的内涵、功能与定位研究;4.航海类专业新工科建设研究;5.基于工程教育专业认证的专业建设研究;6.航海教育管理体制改革研究;7.航海类专业教学质量(航海人才培养质量)评价体系研究;8.高校管理体制机制改革研究;9.海员培训与发证制度改革研究.