中国农村水利水电Issue(1)：152-156,5.DOI:10.12396/znsd.2500356
导流罩外部结构对微水头水轮机水动力性能的影响研究
Research on the Influence of the External Structure of the Fairing on the Hydrodynamic Performance of the Micro-head Hydraulic Turbine
摘要
Abstract
To study the influence of adding an external fairing structure on the hydrodynamic performance of low-velocity hydraulic turbines,this paper proposes a parabolic external structure to enhance the turbine's power generation efficiency.The computational fluid dynamics(CFD)method and Fluent simulation software were used to conduct a comparative analysis of the turbine's hydrodynamic performance before and after adding the external structure.The results show that adding the external structure significantly improves the stability of the flow field in the turbine's working area.Based on this,the influence of different upper-to-lower axis ratios of the external structure on the flow field characteristics and impeller performance was further investigated.It was found that adding an external structure with an axis ratio of 19∶21 optimized the water flow uniformity,maximized the impeller's power coefficient,and enhanced the turbine's stability and power generation efficiency.关键词
低流速/外部结构/上下轴比例/水流稳定性/发电效率Key words
low velocity/external structure/upper-to-lower axis ratio/water flow stability/power generation efficiency分类
信息技术与安全科学引用本文复制引用
吴其桧,高强,高艳婧,李亚宁,严鹏飞..导流罩外部结构对微水头水轮机水动力性能的影响研究[J].中国农村水利水电,2026,(1):152-156,5.基金项目
山西省基础研究计划青年科学研究项目(202203021222053) （202203021222053）
山西省基础研究计划联合资助项目(太重)(202403011212007). （太重）
