模型林带附近乱流特征的观测研究

中国农业气象

模型林带附近乱流特征的观测研究

朱廷曜;关德新;孔繁智;尹洁芬;王新英;

中国科学院沈阳应用生态研究所,中国科学院沈阳应用生态研究所,中国科学院沈阳应用生态研究所,北京大学环境科研中心,北京大学环境科研中心,

出版日期:1990-09-10 发布日期:1990-09-10
基金资助:
林业部重点(攻关)课题三北防护林研究报告之一

THE CHARACTERISTICS OF TURBULENCE NEARBY THE MODEL SHELTERBELTS

Zhu Tingyao Guan Dexin Kong Fanzhi(Institute of Applied Ecology, Academia Sinica, Shenyang)Yin Jiefen Wang Xinying(Environmental Sciences Center, Beijing University)

Online:1990-09-10 Published:1990-09-10

摘要/Abstract

摘要： 该文由风洞实验资料分析了林带模型对附近乱流度和动力速度的影响。结果表明,林带附近相对乱流度ε/ε_0的分布与相对风速的分布特征相反,在相对风速较小的背风面ε/ε_0最大可达200％以上。相对动力速度V_*/V_(*0)的分布特征:①林带附近的三角形区域(高1H、水平距10H)内V_*/V_(*0)减小,甚至出现负值区;②背风面存在一个卵形增值区,最大值可达200％以上,出现在高1.2H、水平距5H附近。

关键词: NULL

Abstract: The distribution of turbulent intensity (ε=u'~2~(1/2)/u) and friction velocity (V_(?)=-u'w'~(1/2)) nearby the model shelterbelts is studied in this paper according to the wind tunnel experiment. The distribute characteristic is where there is decreased velocity there must be increased turbulent intensity and the maximum of ε/ε_0 is 200% more behind the model shelterbelt. The relative friction velocity (V_(?)/V_(?)0) is increased in the leeward the maximum is about 200% but it is decreased very much in the trianglar position nearby the model shelterbelt.

Key words: NULL, NULL

朱廷曜;关德新;孔繁智;尹洁芬;王新英;. 模型林带附近乱流特征的观测研究[J]. 中国农业气象.

Zhu Tingyao Guan Dexin Kong Fanzhi(Institute of Applied Ecology, Academia Sinica, Shenyang)Yin Jiefen Wang Xinying(Environmental Sciences Center, Beijing University). THE CHARACTERISTICS OF TURBULENCE NEARBY THE MODEL SHELTERBELTS[J]. Chinese Journal of Agrometeorology.