飑线风横向风剖面的工程计算方法

doi:10.3969/j.issn.1000-7229.2014.01.008

电力建设 ›› 2014, Vol. 35 ›› Issue (1): 40-45.doi: 10.3969/j.issn.1000-7229.2014.01.008

飑线风横向风剖面的工程计算方法

党会学1，张露2，杨风利1，杨靖波1，李杰2

1.中国电力科学研究院，北京市 100055；2.西北工业大学航空学院，西安市 710072

出版日期:2014-01-01
作者简介:党会学（1982），男，博士，工程师，主要从事输电线路流固耦合力学方面的研究工作，E-mail：danghuixue@epri.sgcc.com.cn；张露（1987），男，博士研究生，主要从事计算流体力学方面的研究工作，E-mail:zhanglu@nwpu.edu.cn；杨风利（1980），男，博士，高级工程师，主要从事输电线路力学及杆塔结构方面的研究工作，E-mail:yangfl1@epri.sgcc.com.cn；杨靖波（1973）, 男，博士，高级工程师，主要从事输电线路杆塔结构方面的研究工作，E-mail: yjb@epri.sgcc.com.cn；李杰（1969），男，博士，教授，博导，主要从事计算空气动力学的基础与应用研究工作，E-mail：lijieruihao@126.com。
基金资助:
国家电网公司科技项目（电网主要灾害规律研究及分布图绘制，输配电线路抗强风关键技术研究与应用）。

Engineering Calculation Method for Horizontal Wind Profiles of Downburst

DANG Huixue1, ZHANG Lu2, YANG Fengli1, YANG Jingbo1, LI Jie2

1.China Electric Power Research Institute, Beijing 100055, China；2.School of Aeronautics, Northwestern Polytechnical University, Xi’an 710072, China

Online:2014-01-01

摘要/Abstract

摘要：

雷暴天气中的下沉气流在近地面区域形成了飑线风，这是破坏力最强的风灾之一。为方便飑线风风剖面在工程设计中的应用，以垂直撞击水平地面的飑线风为例，整理了采用国际量纲的飑线风横向风剖面的计算流程，然后通过计算流体动力学计算得到了全尺寸飑线风的风场，进而比较分析并选取了飑线风风剖面的经验公式，得到了工程可用的风剖面计算方法。最后利用选取的风剖面经验公式计算得到了不同径向位置的风剖面，并结合大气边界层风剖面的分布情况，对飑线风的影响高度及径向尺度进行探讨，指出了在飑线风的最大风速位置附近，其影响高度最高。

关键词: 飑线风, 横向风剖面, 工程计算方法, 国际量纲, 经验公式

Abstract:

Downburst is a kind of strong wind that results from the flow downdraft nearby ground in thunderstorm. In order to make the application of downburst wind profiles convenient in engineering design, taking the vertical dash of downburst on horizontal ground as an example, this paper summarized the calculation process of horizontal wind profiles of downburst with using international dimension, and simulated the true scale wind field of downburst with using CFD, Then, different empirical formulas were compared and selected to obtain the engineering calculation method of wind profile. Finally, downburst wind profiles at different radial position were calculated by the chosen emprical formula, as well as the influencing height and radial scale of downburst were analyzed based on the downburst distribution at atmosphere boundary layer, which has shown that the maximum influencial height of downburst is near the position of its maximum wind speed.

Key words: downburst, horizontal wind profile, engineering calculation method, international dimension, emprical formula

党会学，张露，杨风利，杨靖波，李杰. 飑线风横向风剖面的工程计算方法[J]. 电力建设, 2014, 35(1): 40-45.

DANG Huixue, ZHANG Lu, YANG Fengli, YANG Jingbo, LI Jie. Engineering Calculation Method for Horizontal Wind Profiles of Downburst[J]. ELECTRIC POWER CONSTRUCTION, 2014, 35(1): 40-45.

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飑线风横向风剖面的工程计算方法

Engineering Calculation Method for Horizontal Wind Profiles of Downburst

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