欢迎来到天天文库
浏览记录
ID:36639463
大小:1.68 MB
页数:73页
时间:2019-05-13
《粘性对船舶横剖面垂向运动水动力的影响研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、分类号UDC密级编号工学硕士学位论文粘性对船舶横剖面垂向运动水动力的影响研究硕士研究生:指导教师:学科级别:学科、专业:所在单位:论文提交日期:论文答辩日期:学位授予单位:孙鹏段文洋教授工学硕士船舶与海洋结构物设计制造船舶工程学院2006年2月2006年3月哈尔滨工程大学哈尔滨工程大学硕士学位论文ABSTRACTDtlring廿】edevelopmentoftheseatrade,peoplehaverathcrincreasingdemandforbetcershipdesigningme也ods.A
2、higherspeedcanbeachievedbyoptimiZjngmes场ptype.However,诵tht11eincreaseoft11eforwardspeed,adimcultproblemarisesthat}lowtopredictthchydrodynaⅡlicperf0Hnanceofbigh.speedmoVingbod孓hcaseofsmall—amplitudemotioni11thehnennediaterangeofwave丘equenciesforwIlich1ine
3、archaracterismailllyrepresented,classicalflrst-ordcrpoteInial-theoryresultsa托knowntobereason暑山lyaccurate.Resuhsofsecond-orderanalysisindicatetllatnomirleare丘bctsareiⅡlportami11mehjgh.骶quencyraIlge.However,relativelyfewinvestigationsofviscos埘in(Iucedhydro
4、dynaⅡlicnonlineare丘'cctshaVebeencarriedout.Intllispaper,骶觚quentlyusedcoIIlIn甜cialCFDsofhvareFLUENTisusedf.ormlmericalsimulationandcomputation.Firsny,吐lroughwmdm衄ele)【pe血nemsofslenderbody,someparaI][1etersiIl柳Oequations_j}一stIlrblllencemodelareselected,an
5、d廿lenuidfieldcon出tiollsareanalyzedandcompared.A血erwards,tllen哪er王calsimlllationsandcomputationsfortvvodimensionalsectionsvalidated血efeasibilityoftwoequa吐oIls
6、i}一FtIlrbulencemodeltlorsiⅡmIatiI唱andcomputil培丘ee—surfaceunsteadyflowproblems.Aftcrcomparinga11d
7、analyzingtllehydrod灿icperfoⅡnanccofsomes11ipfornls,suchasrectanglesectionfom,U-form,de印v-fbm,semi-submersiblebowsectionfoml,etc.,the“horcomparedtheresuhsof删merkalsimulations甜ldcompll伽OnsⅥdmpoteIm“一也eoryresultsundercorrespondillgconditions,therefbreinclud
8、ingmeviscollse船ctonhydrodyn锄jcforcesonsections.Forsmall一砌plittldeoscillationsofregularhullsectiOn,也eresultsobtainedbypatential卅1eoryareclosetoviscousn啪ericalresuhs,也edi任矗encebetween也ese帆oresultsgetlargeastheamplitudeincreases.ForseIIli-submersiblebowsect
9、ionfo姐,that哈尔滨工程大学硕士学位论文din、erenceremaills1argeeVeni11caseofsmall-amplimdeoscillation,w蛐chshowthecomplex耐ofviscousnowaIldshouldbepaidM曲attentioninthemotionpredictionofhi曲speedvessel.Keywords:FLUENT,Nurnericalsimulation;Sll
此文档下载收益归作者所有