基于RANS法的B系列对转螺旋桨敞水性能数值模拟  

Numerical simulation of open water performance of B series of contra-rotating propellers based on RANS methods

作　　者：胡俊明[1] 李铁骊[1] 林焰[1] 纪卓尚[1] 杜祥进 

机构地区：[1]大连理工大学船舶工程学院,辽宁大连116024

出　　处：《大连理工大学学报》2017年第2期148-156,共9页Journal of Dalian University of Technology

基　　金：国防基础科研计划资助项目(A0820132027);渔业节能关键技术研究与重大装备开发资助项目(201003024);国家自然科学基金资助项目(51209034);中央高校基本科研业务费专项资金资助项目(DUT14RC(3)043);中国博士后科学基金资助项目(2014M561234);中国博士后科学基金特别资助项目(2015T80256);辽宁省博士启动基金资助项目(201501176)

摘　　要：应用RANS法研究B系列对转螺旋桨敞水性能,对单桨和对转螺旋桨进行数值计算,研究不同湍流模型对数值结果的影响,分析研究对转螺旋桨桨距比和直径比的参数匹配问题,比较对转螺旋桨和单桨的敞水效率,剖析尾流场的变化情况,突破传统势流理论方法无法计入黏性和微观流动机理难以分析和把握等局限.数值结果表明:RSM模型的数值精度较高,且选取桨距比和直径比合适的对转螺旋桨明显提高其推进效率,对转螺旋桨后桨能吸收前桨轴向速度和尾涡能量,减小切向速度对流体扰动的影响,增大流经桨叶的流体动量,减小前桨尾流外直径,增加螺旋桨的推力,提高对转螺旋桨推进性能,具有工程实用性.Based on RANS methods, the open water performance of B series of contra-rotating propellers is studied,and single propeller and contra-rotating propellers are calculatedeffects of different turbulence models on the numerical results. The research isparameters matching of contra-rotating propellers between pitch ratio and diameter water efficiency of single propeller and contra-rotating propellers is compared, meanwhile, the change of wake stream field is dissected. The method breaks through the limitat ion of the traditional potential flow theory which can not include v iscosity, and the difficulty of analyzing and grasping the micro-flow mechanism and so on. The numerical analyses results show that the numerical accuracy of RSM model is higher, and the reasonable diameter ratio and distance between the brotating propellers significantly improve the propulsive efficiency. The rear propeller can absorb the axial velocity and vortex energy of the fro nt propeller which will increase the fluid momentum f lowing through the blade and reduce the external diameter of wake f low of the ftangential velocity＇s influence on f lu id disturbance which can increase the propeller’ s thrust. It ’ spractical for improving the propeller,s propulsion performance in engineering.

关 键 词：对转螺旋桨 RANS法 水动力性能 湍流模型 数值模拟 

分 类 号：U661.3[交通运输工程—船舶及航道工程]