推进叶轮的水动力性能数值模拟与变参数分析  

Numerical simulation and variable parameter analysis on hydrodynamic performance of propelling vane wheel

作　　者：胡健[1] 陈崇格 王珏如 孙聪[1] 赵大刚[1] HU Jian;CHEN Chongge;WANG Jueru;SUN Cong;ZHAO Dagang(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,黑龙江哈尔滨150001

出　　处：《哈尔滨工程大学学报》2021年第4期463-468,共6页Journal of Harbin Engineering University

基　　金：国家自然科学基金项目(51679045,51579052);装备预研船舶重工联合基金项目(6141B42862);装备预研领域基金项目(61402100201,61402070503).

摘　　要：为了研究运转工况和几何参数对叶轮水动力性能的影响,本文建立了有限流域内叶轮水动力性能的计算方法,开展了大型循环水槽驱动叶轮的水动力分析。基于面元法建立数值计算方法,在循环水槽壁面上以反余弦方式布置轴向面元,并均匀布置周向面元;在叶轮叶片上径向和弦向均采用余弦方式布置面元,计算过程中用压力库塔条件进行迭代至收敛。结果表明:叶轮在适当低的转速时效率较高,而叶轮的叶数只在螺距比较小时对水动力性能有较大影响。本文方法能够很好地预报推进叶轮的水动力性能,并且能够对叶轮设计提供指导意见。A numerical method for simulation of hydrodynamic performance in a limited fluid domain is developed to study the effects of operating conditions and geometric parameters on the hydrodynamic performance of the vane wheel;hydrodynamic analysis for the propelling vane wheel in a circulating water channel is performed.The anti-cosine panel distribution is used to arrange the axial surface elements on the circulating channel wall surface using a surface panel method;thus,the circumferential surface elements are evenly arranged.Cosine panel distribution is applied on vane wheel blades in radial and chordwise directions and the pressure Kutta condition is used in the iterative calculation for convergency.The results show that the efficiency of the vane wheel is higher for an approximately low rotational speed.However,the number of blades of the vane wheel has a greater impact on the hydrodynamic performance when the pitch is relatively small.The proposed method can predict the hydrodynamic performance of the vane wheel and provide practical guidance for the design of the vane wheel.

关 键 词：循环水槽 叶轮 势流理论 面元法 有限流域 变参数分析 水动力性能 有效功率 

分 类 号：U661.1[交通运输工程—船舶及航道工程]