简介：Theshiphullsurfaceoptimizationbasedonthewaveresistanceisanimportantissueintheshipengineeringindustry.Thewaveletmethodmayprovideaconvenienttoolforthesurfacehulloptimization.Asapreliminarystudy,weusethewaveletmethodtooptimizethehullsurfacebasedontheMichelwaveresistanceforaWigleymodelinthispaper.Firstly,weexpressthemodel’ssurfacebythewaveletdecompositionexpressionsandobtainareconstructedsurfaceandthenvalidateitsaccuracy.Secondly,werewritetheMichelwaveresistanceformulainthewaveletbases,resultinginasimpleformulacontainingonlytheshiphullsurface’swaveletcoefficients.Thirdly,wetakethesewaveletcoefficientsasoptimizationvariables,andanalyzethemainwaveresistancedistributionintermsofscalesandlocations,toreducethenumberofoptimizationvariables.Finally,weobtaintheoptimalhullsurfaceoftheWigleymodelthroughgeneticalgorithms,reducingthewaveresistancealmostbyahalf.Itisshownthatthewaveletmethodmayprovideanewapproachforthehulloptimization.

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简介：(IWSH'2015,26-28August2015,Glasgow,UK)In1999,thefirstInternationalWorkshoponShipHydrodynamicswassuccessfullyheldinWuhan,China.ThenitwasheldinWuhan,Shanghai,Zhenjiang,Harbin,Seoulinsubsequenteverytwoyears.TheseConferenceshaddrawnavarietyofinternationaldelegatesincludingscientists,engineersandresearcherswithacommoninterestinshiphydrodynamics.Theyprovidedaforumtopromotescientific

简介：流动在在水的免费表面附近移动的轮船壳附近产生的表面波浪在这研究数字地被模仿。三维的含蓄的有限体积方法(FVM)被使用解决雷纳兹平均海军司烧(RANS)方程。可实现的k-e骚乱模型被实现了在免费表面地区在轮船壳附近捕获狂暴的流动。方法结合了的液体(VOF)的体积Stokes波浪理论被用来决定水的免费表面效果。由使用是一自由的六度当模特儿，轮船壳运动数字地一起与Stokes波浪被解决。在行动下面司烧海，在空气之间的接口和在一样的常规模式并且那么的水波浪上的波浪做压力和垂直速度。轮船壳搬到象波浪的一样的方法。轮船壳举的振幅是不到波浪高度因为抑制的粘性。这个方法能为轮船运动，波浪和水动力学的学习提供一本重要参考书。