SHIPENGINEERING船舶工程Vol.45No.12023总第45卷,2023年第1期—77—非定常工况下导管对螺旋桨水动力性能的影响王贵彪1,2a,单长飞3,李国强2b,崔雪亮1,2a,张海波1,2a(1.浙江省海洋水产研究所,浙江舟山316201;2.浙江海洋大学,a.海洋与渔业研究所;b.船舶与海运学院,浙江舟山316201;3.挪威船级社(中国)有限公司江阴分公司,江苏江阴214400)摘要:以某远洋拖网渔船的导管桨为例,在有无导管情况下,利用计算流体力学(CFD)计算软件对螺旋桨在桨叶折断、锁死和四象限等非定常工况下的水动力性能进行计算,并对桨叶表面压力分布和桨后流场情况进行分析与对比。结果表明:随着进速系数的增大,导管推力不断减小,使得导管桨的推力和敞水效率在低进速系数下比无导管螺旋桨大;完整桨叶时导管推力系数明显大于桨叶折断状态,但某一桨叶折断程度对导管的推力无明显的影响;在桨叶锁死下,导管的阻力远高于其所提供的推力;导管的存在能在各象限下极大的改善桨后尾流状态。关键词:螺旋桨;导管;非定常工况;水动力性能;影响中图分类号:U664.33文献标志码:A【DOI】10.13788/j.cnki.cbgc.2023.01.12InfluenceofDuctonHydrodynamicPerformanceofPropellerunderUnsteadyConditionsWANGGuibiao1,2a,SHANChangfei3,LIGuoqiang2b,CUIXueliang1,2a,ZHANGHaibo1,2a(1.ZhejiangMarineFisheriesResearchInstitute,Zhoushan316201,Zhejiang,China;2.ZhejiangOceanUniversity,a.InstituteofOceanographyandFisheries;b.SchoolofNavalArchitectureandMaritime,Zhoushan316021,Zhejiang,China;3.JiangyinBranch,DNVChinaCompanyLimited,Jiangyin214400,Jiangsu,China)Abstract:Takingtheductedpropellerofadeep-seatrawlerasanexample,thehydrodynamicperformanceofpropellerwithorwithoutductunderunsteadyconditionssuchasbladebreaking,lockingandfourquadrantiscalculatedbyComputationalFluidDynamics(CFD)software,andthepressuredistributiononthebladesurfaceandtheflowfieldbehindthepropellerareanalyzedandcompared.Theresultsshowthat:theductthrustdecreasescontinuouslywiththeincreaseoftheadvancecoefficient,sothatthethrustandopenwaterefficiencyoftheductpropelleraregreaterthanthatofpropellerwithoutductatlowadvancecoefficient;whenthebladeisintact,theductthrustcoefficientisobviouslygreaterthanthatinthebladebreakingsta...