冰阻塞状态下吊舱推进器水动力性能分析  

Hydrodynamic performance analysis of podded propulsor under ice blockage condition

作　　者：郭春雨[1] 徐佩 王恋舟 骆婉珍 Guo Chunyu;Xu Pei;Wang Lianzhou;Luo Wanzhen(College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, China)

机构地区：[1]哈尔滨工程大学船舶工程学院

出　　处：《华中科技大学学报（自然科学版）》2018年第5期41-46,共6页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(51209048,51379043,51409063);工信部高技术船舶科研资助项目(G014613002)

摘　　要：为了分析L型吊舱推进器在冰阻塞状态下的水动力性能以及流场特征,基于RANS方法,运用重叠网格技术,对L型吊舱推进器在螺旋桨-冰不同距离下的非定常水动力性能进行了数值计算.研究结果表明：随着螺旋桨-冰之间距离的逐渐减小,螺旋桨和吊舱单元的推力和扭矩逐渐增加,距离较近时增加迅速,但增加值不稳定;当螺旋桨-冰之间的距离逐渐减小时,阻塞区域内桨叶的压力差逐渐增加,其他桨叶的压力差几乎不变;舱体和支架的压力差增加;螺旋桨-冰之间阻塞区域内轴向来流速度先减小后增加再减小,非阻塞区域的轴向来流速度几乎不变;螺旋桨尾涡的高速区向螺旋桨旋转方向逐渐增加.In order to analyze the hydrodynamic performance and flow field characteristics of L-type podded propulsor under ice blockage condition,based on the RANS method,the unsteady hydrodynamic performance of L-type podded propulsor at different distances between propeller and ice was numerically calculated by using the overlapping grid technology.Research results show that with the decrease of the distance between propeller and ice,thrust and torque of propeller and pod unit increase gradually,and rapid increase when the distance is near,but the added value is unstable.With the decrease of the distance between propeller and ice,blade pressure difference increases gradually in blocking region,while the other blade pressure differences are almost the same,and the pressure differences of the strut and pod increase.The axial inflow velocity in the blocking region between the propeller and ice decreases first,then increases,and then decreases,and the axial inflow velocity is almost constant in the non-blocking zone.The high velocity area of the propeller trailing vortex increases gradually towards the propeller rotation direction.

关 键 词：吊舱推进器 螺旋桨 重叠网格 冰 水动力性能 

分 类 号：U661.31[交通运输工程—船舶及航道工程]