冰阻塞对倒车螺旋桨空化和水动力性能的影响  

Effect of Ice Blockage on Cavitation and Hydrodynamic Performance of Reversing Propeller

作　　者：郑思洁 周利 丁仕风 高俊亮[1] ZHENG Sijie;ZHOU Li;DING Shifeng;GAO Junliang(Jiangsu University of Science and Technology,School of Naval Architecture and Ocean Engineering,Zhenjiang 212003,China)

机构地区：[1]江苏科技大学船海学院,镇江212003

出　　处：《中国造船》2022年第3期83-92,共10页Shipbuilding of China

基　　金：国家自然科学基金(51809124,51911530156);江苏省自然科学基金(BK20170576);江苏省高等学校自然科学研究基金(17KJB580006);上海交通大学海洋工程国家重点实验室研究基金(1704,1807);工信部高技术船舶科研计划项目(2017-[614])。

摘　　要：针对极地船舶在冰区航行时空泡对螺旋桨倒车性能的影响,采用敞水螺旋桨模型试验和基于RANS黏流CFD数值模拟的方法,开展双向破冰船螺旋桨在冰阻塞环境下倒车性能研究。研究结果表明,在空泡数σ为4.0和1.5,冰-桨距离L/D从0.7减小到0.3时,推力系数和扭矩系数呈现先增加后减小的趋势,空泡覆盖面积增加。在进速系数J=0.55、空泡数σ=1.5时,螺旋桨倒车性能最差。对于这一工况,当冰-桨距离L/D从0.7减小到0.3时,推力系数从0.141增加到0.147,然后减小到0.137,扭矩系数从0.023 1增加到0.023 9,然后减小到0.022 8;冰-桨距离L/D=0.3时近冰块桨叶吸力面上空泡覆盖面积约为L/D=0.7时的3倍,螺旋桨尾流在冰阻塞影响下偏转了14°。这项研究可为极地船舶冰区螺旋桨设计提供技术支持。With respect to the cavitation effect on reversing performance of propellers in the ice field, a two-way ice-breaking ship under ice blockage and cavitation occurring is studied with propeller model test and CFD numerical simulation based on RANS viscous flow. The results show that for cavitation number σ is 4.0 and 1.5, when the ice-propeller distance L/D decreases from 0.7 to 0.3, both the thrust coefficient and torque coefficient first increase and then decrease, and the cavitation coverage area increases. In the case of the advance coefficient J = 0.55 and cavitation number σ = 1.5, the reversing performance of the propeller is the worst, and when the ice-propeller distance L/D is reduced from 0.7 to 0.3, the thrust coefficient first increases from 0.141 to 0.147, then decreases to 0.137, and the torque coefficient increases from 0.023 1 to 0.023 9, and then decreases to 0.022 8. The cavitation coverage area of the blade near the ice block with L/D = 0.3 is about 3 times of that with L/D = 0.7, and the propeller wake is deflected 14 degrees under the influence of ice blockage. This study may provide technical support for the design of propellers of polar ships in the ice field.

关 键 词：冰区螺旋桨 倒车 冰阻塞 空化性能 水动力性能 

分 类 号：U661.313[交通运输工程—船舶及航道工程]