船舶纵倾调整减阻分析

《船舶纵倾调整减阻分析》由会员上传分享，免费在线阅读，更多相关内容在工程资料-天天文库。

1、AbstractWiththesignificantlyrapiddevelopmentofuniversaleconomy,humansocietyincreasinglyrealisethegrimsituationofenergyissuesandenvironmentalissues.Inthesocietywithglobalizedeconomy,transportationinshipsstillplaysakeyrole.Reducingboththeshipfuelconsumptionandthepollutio

2、noftheenvironmentarepaidmuchattention.Optimizingtheshiptrimforshipresistancereductionisoneofthemosteffectivemethodstoreducethefuelconsumptionofshipsandthepollution.Inthisthesis,theimportanceoftheperformanceofshipresistanceisdescribedatthebegining,andrapidityisasignific

3、antlyimportantperfonnanceforboththemilitaryshipsandcivilships.Inthesecondplacethesignificanceofshipenergyconservationisintroduced.Andthentheresearchstatusofoptimaltrimforresistancereductiondomesticandoverseasisdescribedindetails・Inthethesis,westudythechangeofshipresist

4、ancebyoptimizingthetrimineachdraftandeachspeedviamodeltestandCFDmethod.Thenafteranalyzingtheshipresistanceperformanceofeachdraftandeachspeed,wecangettheoptimaltrim.Theresultsshowthatshipsindifferentdraftstatushavedifferenttrimfeatures:insomedraftstatustrimbybowmaytendt

5、obetterresistanceperformance,insomedraftstatustrimbysternmaytendtobetterresistanceperformance,insomedraftstatusevenkeelmaytendtobetterresistanceperformance.Andthesituationisthesameasindifferentspeed.Inconclusion,optimazingtheshiptriminvariousloadstatusviamodeltestandCF

6、Disoneofthemosteffectivewaytoreducetheshipresistance,anditissignificantforenergyconservation.Keywords：TrimShipresistancereductionModeltestCFD符号说明Rw兴波阻力Rf摩擦阻力Rpv粘压阻力Rt总阻力Rp压阻力Rv粘性阻力V运动粘性系数p密度g重力加速度V速度Fr傅汝德数Re雷诺数S湿表面积L船长Cv粘性阻力系数cw兴波阻力系数cf摩擦阻力系数ACf粗糙度补贴系数总阻力系数形状系数速度矢量速度在X

7、方向分量Vy速度在y方向分量速度在Z方向分量点矢量压力时间动力粘性系数矢量质量力Pv表面力在X方向分力表面力在y方向分力Pz表面力在z方向分力湍动能湍流耗散率时均速度分量脉动速度分量涡粘性Kronneckerdelta函数摘要IABSTRACTII符号说明III目录V第1章绪论1.1课题研究背景(1)1.2国内外研究现状(5)1.3论文主要内容(11)1.4本章小结(12)第2章船舶阻力基本理论2.1船舶阻力概述(14)2.2船舶阻力模型试验(15)2.3船舶阻力CFD理论基础(19)2.4本章小结(26)第3章船舶阻力模型试验3.

8、1模型试验过程(27)3.2模型试验结果及分析(37)3.3本章小结(39)第4章船舶阻力CFD数值计算4.1CFD数值计算过程(40)4.2CFD数值计算结果及分析(46)4.3本章小结(49)第5章理论分析(51)第6章结论与展望