湖北汽车工业学院学报2025，Vol.39Issue(2)：19-24,6.DOI:10.3969/j.issn.1008-5483.2025.02.004
偏工况下轴流泵压力脉动特性分析
Pressure Pulsation Characteristics of Axial Flow Pump under Off-design Conditions
摘要
Abstract
To investigate the variation of pressure pulsations and identify the main excitation sources in axial-flow pumps under off-design conditions,a computational fluid dynamics(CFD)simulation analy-sis model was established based on the Reynolds-averaged Navier-Stokes(RANS)equations and the SST k-ω turbulence model to analyze spectral and spatial distribution on pressure pulsations within the pump.The research reveals that,under off-design conditions,high-amplitude pressure pulsations at the monitoring points on the axial-flow pump wall are primarily concentrated at frequencies correspond-ing to 4,11,3,and 1.3 times the shaft rotational frequency.Specifically,under low-flow conditions,the amplitude of pressure pulsations at the leading and trailing edges of the impeller blades significantly in-creases at frequencies of 11,3,and 4 times the shaft rotational frequency.Meanwhile,the amplitude at the leading and trailing edges of the guide vanes notably rises at 1.3 times the shaft rotational frequency.关键词
轴流泵/压力脉动/湍动能/熵产损失Key words
axial flow pump/pressure pulsation/turbulent kinetic energy/entropy production loss分类
机械工程引用本文复制引用
马润彬,周慧慧,龚青山,辛新..偏工况下轴流泵压力脉动特性分析[J].湖北汽车工业学院学报,2025,39(2):19-24,6.基金项目
国家自然科学基金项目(52375508) （52375508）
湖北省教育厅重点项目(D20211803) （D20211803）
湖北汽车工业学院博士科研启动基金(BK202001) （BK202001）
