摇摆条件下离心泵汽蚀特性分析  

Numerical investigations on the cavitation of centrifugal pump under rolling conditions

作　　者：肖颀 柴盈华 马俊 苟金澜 邹振海 刘子平 俞建阳[3] 申晓慧 XIAO Qi;CHAI Yinghua;MA Jun;GOU Jinlan;ZOU Zhenhai;LIU Ziping;YU Jianyang;SHEN Xiaohui(Laboratory on Thermal Energy and Power,Wuhan Second Ship Design and Research Institute,Wuhan 430205 China;Project Management Office,Naval Equipment Department,Beijing 100010,China;School of Energy Science and Engineering,Harbin Institute of Technology,Harbin 150001,China)

机构地区：[1]武汉第二船舶设计研究所热能动力技术重点实验室,湖北武汉430205 [2]海军装备部装备项目管理中心,北京100010 [3]哈尔滨工业大学能源科学与工程学院,黑龙江哈尔滨150001

出　　处：《舰船科学技术》2024年第14期103-109,共7页Ship Science and Technology

基　　金：国家自然科学基金资助项目(12302334)。

摘　　要：为准确描述摇摆等工况对海洋平台离心泵汽蚀特性及热力特性影响目标,采用动网格方法,综合考虑泵运行时绕中心轴自转以及绕摇摆中心公转运动,构建海洋条件下离心泵汽蚀仿真模型。研究针对不同摇摆幅值及频率下的离心泵汽蚀特性开展仿真计算。结果表明,在摇摆过程中离心泵的导轮叶片位置将出现局部空化,不同摇摆位置处的影响范围体现出了较大的差异。单个周期内,空化影响范围呈现出了先增大后减小的趋势,在约3/4周期时刻空化影响范围达到了最大,并以此提出了衡量海洋条件对离心泵特性影响极限波动系数,为海洋条件下离心泵抗汽蚀设计及海洋核动力平台动力系统安全稳定运行提供技术支撑。Aiming to give an accurate description of the rolling conditions influence on centrifugal pump cavitation and thermal-hydraulics characteristics,taking rotation and revolution into consideration,centrifugal pump cavitation simulation model under rolling conditions is established with dynamic mesh method,with which simulations for correlating characteristics under rolling conditions of different frequency and amplitudes are performed.Results suggest cavitation emerges nearby the inducer blades with a non-uniform spatial influence under rolling conditions,as the temporal evolution during a single period,the cavitation range shrinks after extends with maxima at about three quarters of a rolling period.Subsequently,a rolling conditions influence limit factor for centrifugal pump performance is proposed,which could provide necessary support for centrifugal pump anti-cavitation design under rolling conditions and safety and stability analysis of marine nuclear power platform power system.

关 键 词：摇摆条件 离心泵 汽蚀 动网格 

分 类 号：TL334[核科学技术—核技术及应用]