第33卷第6期 2016年11月
土木工程与管理学报 Journal of Civil Engineering and Management
Vol. 33 No. 6 Nov.2016
风力发电机塔筒结构在坡地上的风压数值模拟
牛建刚，陈旭，闫梁
（内蒙古科技大学建筑与土木工程学院，内蒙古包头014010）
摘要：为了研究当风流经时不同地形对风力发电机塔筒的影响，以内蒙古白云鄂博地区的锥形塔筒风力发电机为研究对象，利用ANSYS有限元软件建立了塔筒分别位于坡度为15°、30°、45°山坡上的模型，通过分析风流经山坡时塔筒周围的风压系数分布情况推导出了风压值在平地与山区之间以及不同坡度山坡之间的关系，得到了锥型塔筒结构周围流场的变化特征和爬坡增值系数的建议取值。分析表明，风压和风速会随坡度增加而增大，且塔筒表面风压系数在迎风面分布较密在背风面分布较疏，并在0°位置处出现最大正风压系数，在侧面 90°和270°位置处出现最小负风压系数。本文研究结果可为今后在不同地貌上风力发电机的设计与研究提供参考。
关键词：风力发电机塔筒；地形地貌；风压系数；爬坡增值系数；数值模拟
中图分类号：TU312+.1；TU347
文献标识码：A
文章编号：2095-0985(2016)06-0006-06
Numerical Simulation of Wind Pressure on the Wind Turbine
toWerstructureontheSlopingField NIU Jiang-gang，CHEN Xu,YAN Liang
( School of Architecture and Civil Engineering, Inner Mongolia University of Science and Technology,
Baotou014010，China）
Abstract : In order to study the influence of different terrain on wind power generator when wind come through, and take the wind power generators of Baiyunebo, in Inner Mongolia, as study object. The models of the wind turbine tower on the slopes of 15°,30°,45° are established by ANSYS finite element software,the relationship of wind pressure value between plains and mountains is deduced by the distribution of wind pressure coefficient around the tower when winds come through, the characteristics of the flow field around the tower and the recommended value of climbing increment coefficient are obtained. By analysis, wind pressure and wind speed will increase with the increase of slope, and on the surface of the tower, the wind pressure coefficients distribution in the windward side is more dense than the leeward side, the maximum positive pressure coefficients locate in the O position, and the minimum negative wind pressure coefficient locate in the 90°and 270° positions on the side. The research results will provide a reference for the design of the wind power generator on different landforms.
Key words: wind turbine tower; topography; wind pressure coefficient; climbing increment
coefficient; numerical simulation
当气流流经如山脊、山坡、独立丘陵、悬崖等复杂地形时会发生大尺度流动分离和回流等现象，风速也将有很大程度提高，虽然有利于风力发
收稿日期：2016-03-02修回日期：2016-04-20
电，但对风力发电机的支撑结构也会有显著影响。因此山地风力发电机塔架结构周围风场分布情况关系到风力发电机安全性能，进而影响整个风场
作者简介：牛建刚（1976-），男，山西太原人，教授，博士，研究方向为混凝土耐久性（niujianggang@imust.edu.cn）基金项勇再据然科学基金（51068021）