干旱区生态环境知识资源中心(Arid): 气象观测塔架周围风场水平风速畸变规律的定量分析

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	气象观测塔架周围风场水平风速畸变规律的定量分析
其他题名	Numerical analysis of the distortion of the horizontal flow field induced by a meteorological tower
	许学庆; 王国华; 郑晓静; 薄天利
来源期刊	兰州大学学报. 自然科学版
ISSN	0455-2059
出版年	2015
卷号	51 期号:3 页码:426-434
中文摘要	采用FLUENT软件,对位于中国巴丹吉林沙漠边缘高度为50 m的气象观测塔,定量模拟了处于水平来流流向风速作用下,塔架周围流场的畸变规律.定量模拟结果显示:流向风速在塔架背风区域的畸变与已有野外测量和风洞实验结果良好吻合,证实了本文定量模拟结果的可靠性.在此基础上给出了流向风速在塔架迎风区域的畸变规律,指出流向风速在塔架迎风区附近的亏损率随塔架方位theta基本服从高斯分布,且无论水平来流流向风速多大和距塔架表面多近,在方位角theta = 55°附近均可基本忽略塔架对来流风速的影响.揭示展向的塔架诱导风速随离塔架表面距离和方位以及水平来流流向风速变化的规律,发现塔架的诱导风速会随着水平来流流向风速的增大而增大,其最大值在展向可达到来流流向风速的15%左右.
英文摘要	Taking a 50 m high meteorological tower located at the southeastern edge of the Badain Jaran Desert as the research object, this study conducted FLUENT simulations and analyses of the distorting influence of the tower structure on the flow field around it and the results showed that the attenuation of the wind in the lee wake of the tower agreed well with the existing field observations and wind tunnel experiments which verified the accuracy of the numerical simulations in this study. A simulation-based analysis was performed with a particular concentration on the stream wise, lateral and vertical components of the tower-induced wind velocity errors on the windward side, which showed that the reduction ratio of the stream wise wind velocity varied with the azimuth angle theta of the tower-mounted anemometers yielding a Gaussian distribution. When theta = 55o the distorting effect was not significant regardless of the incoming wind velocity and the distance from the tower. For the lateral components, the tower-induced velocities increased with the incoming stream wise wind velocity, and the maximum tower-induced wind velocity could reach 15% of the inlet stream wise wind velocity.
中文关键词	气象塔 ; 数值模拟 ; 塔架流场畸变规律 ; 诱导风速
英文关键词	meteorological tower numerical simulation distorting influence of the tower structure induced wind velocity
语种	中文
国家	中国
收录类别	CSCD
WOS类目	MECHANICS ; ENVIRONMENTAL SCIENCES
WOS研究方向	Mechanics ; Environmental Sciences & Ecology
CSCD记录号	CSCD:5471349
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/232967
作者单位	兰州大学, 西部灾害与环境力学教育部重点实验室, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	许学庆,王国华,郑晓静,等. 气象观测塔架周围风场水平风速畸变规律的定量分析[J]. 兰州大学,2015,51(3):426-434.
APA	许学庆,王国华,郑晓静,&薄天利.(2015).气象观测塔架周围风场水平风速畸变规律的定量分析.兰州大学学报. 自然科学版,51(3),426-434.
MLA	许学庆,et al."气象观测塔架周围风场水平风速畸变规律的定量分析".兰州大学学报. 自然科学版 51.3(2015):426-434.