中国机械工程2025，Vol.36Issue(10)：2198-2206,9.DOI:10.3969/j.issn.1004-132X.2025.10.005
转速和流量对轮缘驱动轴流泵压力脉动的影响
Influences of Rotational Speed and Flow Rate on Pressure Pulsations of a Rim-driven Axial Flow Pump
摘要
Abstract
A novel RDP generated pressure pulsations during operations,which might negatively im-pact pump performance and system stability.The numerical simulation was employed to analyze the exter-nal characteristics and internal flow patterns of RDP under different rotational speeds and flow conditions.Utilizing POD,the main energy modes were extracted through spatiotemporal feature decomposition to in-vestigate the influences of rotational speed and flow rate on the pressure pulsation at the trailing edges of the impeller blades,revealing the relationship between nonlinear dynamics and fluid-structure interaction phe-nomena.The results show that each rotational speed corresponds to a distinct optimal operating point,with the optimal point shifting towards lower flow rates as the rotational speed decreases.Moreover,the pres-sure pulsations are predominantly governed by nonlinear dynamics behavior,with nonlinear interaction ef-fects between the impeller blades and guide vanes becoming more pronounced at lower rotational speeds and higher flow rates.关键词
轮缘驱动轴流泵/压力脉动/本征正交分解/动静干涉/转速/流量Key words
rim-driven axial flow pump(RDP)/pressure pulsation/proper orthogonal decomposition(POD)/rotor-stator interaction/rotational speed/flow rate分类
交通运输引用本文复制引用
陈孟杰,张琢,欧阳武,盛晨兴,刘报,刘伟..转速和流量对轮缘驱动轴流泵压力脉动的影响[J].中国机械工程,2025,36(10):2198-2206,9.基金项目
国家重点研发计划(2022YFB4300802) （2022YFB4300802）
