不同工况下螺旋桨空泡的水动力性能研究  

Hydrodynamic performance of propeller in cavitating conditions under different ambient pressures

作　　者：吴利红 刘铭[1] 张文灿 封锡盛 李一平[2] 李硕[2] WU Lihong;LIU Ming;ZHANG Wencan;FENG Xisheng;LI Yiping;LI Shuo(College of Naval Architecture and Ocean Engineering, Dalian Maritime University, Dalian 116026, China;State key laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110169, China)

机构地区：[1]大连海事大学船舶与海洋工程学院,辽宁大连116026 [2]中国科学院沈阳自动化研究所机器人学国家重点实验室,辽宁沈阳110169

出　　处：《哈尔滨工程大学学报》2022年第5期593-599,共7页Journal of Harbin Engineering University

基　　金：国家重点研发计划项目(2021YFC2801100);广东省重点领域研发计划项目(2020B1111010004);辽宁省自然科学基金项目(2020-KF-12-05).

摘　　要：为研究水面快速游艇、水面大型舰船和水下机器人的高负荷螺旋桨,本文采用MAU4-40小型桨,通过改变环境压力,基于两相流和空化模型预报了3种载体螺旋桨空泡初生的临界转速,空泡发展形状和空泡生成后的螺旋桨水动力性能曲线。并将水下机器人携带纵斜桨自航空泡问题进行研究。结果表明:理论预报空泡发生的临界转速小于数值模拟的临界转速;3种工况对应不同的临界转速;当空泡覆盖整个叶背区域,推力系数最大下降28.5%;纵斜能降低空泡发生,并使空泡位置移向随边;水下机器人伴流对螺旋桨空泡略有影响。To investigate the propeller cavitation of fast yachts,large ships and autonomous underwater vehicle(AUV)under heavy conditions,a MAU 4-40 model propeller is used to predict cavitation inception,cavitation development and hydrodynamic performance curve in cavitating conditions by changing the ambient pressure based on multiphase flow model and cavitation model.After that,the cavitation under non-uniform flow is studied for an AUV self-propulsion with a raked propeller.The numerical results showed that,the critical revolution for cavitation in theory is larger than that in numerical calculation;different critical revolution speeds for cavitation are found in three conditions;the maximum thrust coefficient decreased by 28.5%as the suction side is covered with cavitation;a raked propeller is helpful to decrease cavitation and to move the cavitation area into the trailing edge;The non-uniform inflow from the AUV will result in small cavitation variation.

关 键 词：螺旋桨 空泡预报 环境压力 纵斜 水动力性能 不同工况 自航 水下机器人 

分 类 号：U661.31[交通运输工程—船舶及航道工程]