可再生能源2026，Vol.44Issue(3)：336-344,9.
管道式Savonius空心涡轮机尾流场不稳定流动特性研究
Study on the unstable flow characteristics in the tail flow field of a pipeline Savonius hollow turbine
摘要
Abstract
In modern water supply pipeline systems,pipeline type Savonius turbine generators can use the residual pressure of pipeline fluid to generate power for pipeline system detection equipment.In depth research on the internal flow mechanism of Savonius turbines is crucial for improving their efficiency and operational stability.This article takes the DN50 pipeline Savonius turbine as the research object,and analyzes the unstable flow characteristics of the wake flow field of turbines with different structural schemes through numerical simulation methods.The energy gradient theory and dynamic mode decomposition(DMD)combined method are used to study the structural characteristics and motion laws of the unstable flow field in the wake flow field,and the energy loss characteristics caused by unstable flow are analyzed.The results indicate that the hollow structure Savonius turbine effectively suppresses the unstable counter jet phenomenon in the wake flow field and reduces the large-scale disturbance flow caused by uneven distribution of fluid energy gradient.The complex and unstable flow structure in the wake field exhibits periodic fragmentation and dissipation caused by dynamic and static interference.Reduced the output power loss caused by unstable flow and improved efficiency.关键词
Savonius涡轮机/转轮空心结构/不稳定流动/能量梯度理论/动态模态分解Key words
savonius turbine/hollow structure of the wheel/unstable flow/energy gradient theory/dynamic mode decomposition分类
能源科技引用本文复制引用
王晓晖,朱寅彬,苗森春,杨军虎,史凤霞,祁炳..管道式Savonius空心涡轮机尾流场不稳定流动特性研究[J].可再生能源,2026,44(3):336-344,9.基金项目
国家自然科学基金资助项目(52469018) （52469018）
甘肃省青年人才项目(2025QNTD36) （2025QNTD36）
甘肃省青年博士基金(2023QB-033). （2023QB-033）
