南京理工大学学报（自然科学版）2024，Vol.48Issue(4)：405-414,10.DOI:10.14177/j.cnki.32-1397n.2024.48.04.001
基于不同重叠比的高速公路隔离栅Savonius风力机气动性能仿真
Simulation of aerodynamic performance of Savonius wind turbine for highway separation fence based on different overlap ratios
摘要
Abstract
The wind conditions on highways are complex and variable,and its wind field is mainly composed of natural wind and moving vehicles wake,and the velocity presents aperiodicity and perturbation.In order to study the influence law of different overlap ratios on the aerodynamic performance of Savonius(S)vertical axis wind turbine of highway separation fences,the auto-regressive(AR)model of linear filtering and overset grid technology are used to establish a highway time-domain wind field model.Based on above,through hydrodynamic transient numerical simulation,the S wind turbine power aerodynamic efficiency coefficient Cp and moment coefficient Cm are analyzed and discussed when the natural wind speed is five and six,and the overlap ratio is 0～0.24.The results show that,when the aspect ratio and impeller radius of the wind turbine are determined,the wind turbine Cp and Cm improve with increasing overlap ratio for a highway time-domain wind field with a natural wind speed of five.When the natural wind speed reaches six,two peaks of wind turbine Cp and Cm occur at overlap ratios of 0.06 and 0.18,and the overall performance of the S wind turbine is optimal when the overlap ratio is 0.18.关键词
垂直轴风力机/重叠比/时域风速/高速公路/气动性能Key words
vertical axis wind turbine/overlap ratio/time-domain wind speed/highway/aerodynamic characteristic分类
能源科技引用本文复制引用
吴世贤,黄雷,袁军堂,李玉龙..基于不同重叠比的高速公路隔离栅Savonius风力机气动性能仿真[J].南京理工大学学报（自然科学版）,2024,48(4):405-414,10.基金项目
江苏省自然科学基金(BK20200499) （BK20200499）
江苏省博士后科研资助计划(2021K602C) （2021K602C）
