基于叶片仿生优化的离心泵压力脉动控制  

Pressure pulsation control of centrifugal pump based on biomimetic optimization of blades

作　　者：王红超 林言丕 李晓俊[2] 朱祖超[2] WANG Hongchao;LIN Yanpi;LI Xiaojun;ZHU Zuchao(AVIC Xinxiang Aviation Industry(Group)Co.,Ltd.,Xinxiang,Henan 453003,China;Zhejiang Key Laboratory of Multiflow and Fluid Machinery,Zhejiang Sci-Tech University,Hangzhou,Zhejiang 310018,China)

机构地区：[1]新乡航空工业(集团)有限公司,河南新乡453003 [2]浙江理工大学浙江省复杂流动与流体工程装备重点实验室,浙江杭州310018

出　　处：《排灌机械工程学报》2025年第3期224-230,共7页Journal of Drainage and Irrigation Machinery Engineering

基　　金：国家自然科学基金资助项目(U21A20126,52406059);浙江省重点研发计划项目(2024C01117)。

摘　　要：为降低离心泵动静干涉区域的压力脉动,设计了一种仿生正弦尾缘结构.采用试验和数值计算相结合的方法,定量研究了仿生叶片尾缘结构对离心泵压力脉动的减弱效果.引入压力脉动强度系数,获得了离心泵内部的压力脉动强度分布,对离心泵流场中的高强度压力脉动区域进行精确定位.研究结果表明:采用仿生正弦结构尾缘叶轮可以消除离心泵动静干涉区内的高频压力脉动,有效提高离心泵动静干涉流场稳定性,从而减小离心泵动静干涉区域内的压力脉动强度;仿生叶片尾缘结构还能够破除叶片尾缘大尺度涡结构,有助于改善叶片尾缘涡的不断脱落引起的流场局部振荡;与采用原始尾缘相比,采用仿生叶片尾缘结构时,离心泵动静干涉区压力脉动振幅下降了约5.7%,定量说明了仿生叶片尾缘结构的流场稳定效果.研究结果有助于改善离心泵动静干涉区域的压力脉动特性,提高泵运行稳定性.A biomimetic sinusoidal trailing edge structure was designed to reduce pressure pulsation in the rotor-stator interaction area of centrifugal pumps.The effect of biomimetic blade trailing edge structure on the pressure pulsation of the centrifugal pump was quantitatively studied by the combination of experiment and numerical simulation.The pressure pulsation intensity coefficient was introduced to obtain the pressure pulsation intensity distribution within the centrifugal pump,and the high-intensity pressure pulsation areas in the centrifugal pump flow field was accurately determined.It is found that the biomimetic sinusoidal trailing edge impellers can eliminate the high-frequency pressure pulsations within the rotor-stator interaction region of the centrifugal pump.This approach effectively improves the stability of the rotor-stator interaction flow field,consequently diminishing the pressure pulsation intensity in the rotor-stator interaction region.The biomimetic blade trailing edge structure is capable of disrupting the large-scale vortex structures at the trailing edge of the blade,thereby mitigating the local oscillation of the flow field caused by the persistent shedding of the blade trailing edge vortex.In comparison to the original structure,the pressure pulsation amplitude in the rotor-stator interaction region of the centrifugal pump is reduced by about 5.7%when biomimetic blade trailing edge structure is used.This quantitatively illustrates the flow field stability effect on the flow field afforded by the biomi-metic blade trailing edge structure.The findings of this research contribute to improve the pressure pulsation characteristics of the centrifugal pump,thereby enhancing the pump operation stability.

关 键 词：叶片尾缘 仿生优化 压力脉动 动静干涉 涡结构 

分 类 号：S277.9[农业科学—农业水土工程] TP72[农业科学—农业工程]