简介：全挂式平板车是港口短途水平运输的重要工具。目前平板车使用中因存在着一些问题，如无缓冲装置、板面尺寸不合理而造成运输效益低、运输途中易掉包等问题，因此，文章就如何进行改进并设计出一种较为实用的加长平板车作了相关论述。

简介：认真学习、正确领会、坚决贯彻全教会精神，是海事大学的当务之急。全校上下能否学习好、领会好、贯彻好全教会精神，关系到海事大学今后一个时期能否进一步改革、建设和发展，实际上也就是关系到海事大学的前途和命运。这些年来，我们将“建设成为世界第一流的高等航海学...

简介：Green-Naghdi(G-N)theoryisafullynonlineartheoryforwaterwaves.SomeresearcherscallitafullynonlinearBoussinesqmodel.DifferentdegreesofcomplexityofG-Ntheoryaredistinguishedby"levels"wherethehigherthelevel,themorecomplicatedandpresumablymoreaccuratethetheoryis.IntheresearchpresentedhereacomparisonwasmadebetweentwodifferentlevelsofG-Ntheory,specificallylevelIIandlevelIIIG-Nrestrictedtheories.AlinearanalyticalsolutionforlevelIIIG-Nrestrictedtheorywasgiven.WavesonaplanarbeachandshoalingwaveswerebothsimulatedwiththesetwoG-Ntheories.ItwasshownforthefirsttimethatlevelIIIG-Nrestrictedtheorycanalsobeusedtopredictfluidvelocityinshallowwater.AlevelIIIG-NrestrictedtheoryisrecommendedinsteadofalevelIIG-Nrestrictedtheorywhensimulatingfullynonlinearshallowwaterwaves.

简介：Severalindustrialapplicationssuchaselectronicdevices,heatexchangers,gasturbineblades,etc.needcoolingprocesses.Theinternalcoolingtechniqueisproperforsomeapplications.Inthepresentwork,computationalsimulationsweremadeusingANSYSCFXtopredicttheimprovementsofinternalheattransferintherectangularribbedchannelusingdifferentcoolants.Severalcoolantssuchasair,steam,air/mistandsteam/mistwereinvestigated.Theshearstresstransportmodel(SST)isselectedbycomparingthestandardk-ωandOmegaReynoldsStress(ωRS)turbulencemodelswithexperimentalresults.Theresultsindicatethattheheattransfercoefficientsareenhancedintheribbedchannelwhileinjectingsmallamountsofmist.Theheattransfercoefficientsofair/mist,steamandsteam/mistincreaseby12.5%,49.5%and107%overthatofair,respectively.Furthermore,incomparisontoair,theair/mistheattransfercoefficientenhancesbyabout1.05to1.14timeswhenthemistmassfractionincreasesfrom2%to8%,respectively.Thesteam/mistheattransfercoefficientincreasesbyabout1.12to1.27timeshigherthanthatofsteamovertheconsideredrangeofmistmassfraction.

简介：巨大的屏幕上,海浪拍打着船艏,船体微微摇晃。驾驶台前,进港船舶上的引航员和驾驶员全神贯注地进行着准备靠港的各种操作,并与协助船舶进港的4艘拖轮驾驶员交互协同作业。

简介：一、进一步认真学习、深刻领会、全面宣传贯彻落实全教会精神，是进一步增强学校改革的责任感和紧迫感，全面搞好学校下一步各项改革工作的关键问题这次党中央、国务院在北京召开的全国教育工作会议，是在我国即将胜利进入２１世纪之际，党中央、国务院从我国社会主义现代...