Turbulence statistics of natural airflow within a large Open Top Chamber

ZHANG Jun-hui; HAN Shi-jie; SONG Guo-zheng

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Turbulence statistics of natural airflow within a large Open Top Chamber

机译：大型开放式顶室内的自然气流湍流统计

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The turbulence statistics parameters (variables) of natural airflow within a large Open Top Chamber (OTC), 4 m in high height and 3 m in diameter, were measured with a three-dimensional ultrasonic anemometer/ thermometer at Research Station of Changbai Mountain Forest Ecosystems Jilin Province, China in May 2004, for improving the field application of OTP. Results showed that because of the physical limitation, turbulence within OTC exhibited unique map compared with that of natural environments. There were clear daily patterns for most parameters. Turbulence here seemed to be isotropic and closely linked at all directions. Shape of eddies looked like a 'cylinder' which was very similar to the shape of OTC. Continuous airflow was always interpreted by large scale eddies from top of OTC and showed high interactive intermittence at all directions.

机译：在长白山森林生态系统研究站，用三维超声风速仪/温度计测量了大型高顶舱（OTC）中自然气流的湍流统计参数（变量），该高海拔高度为4 m，直径为3 m。 2004年5月，中国吉林省，以改善OTP的现场应用。结果表明，由于物理限制，与自然环境相比，OTC内的湍流显示出独特的图。大多数参数都有明确的每日模式。这里的湍流似乎是各向同性的，并且在各个方向上都紧密相连。涡流的形状看起来像一个“圆柱体”，与OTC的形状非常相似。连续气流总是被OTC顶部的大型涡旋所解释，并在各个方向都表现出高度的互动性。

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来源
《Journal of Forestry Research》 |2005年第4期|p.303-305|共3页
作者
ZHANG Jun-hui; HAN Shi-jie; SONG Guo-zheng;
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作者单位

Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, P. R. China;

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原文格式 PDF
正文语种 eng
中图分类林业;
关键词
open top chamber; turbulence density; time and length scales; intermittence; buoyancy;

机译：开顶室;湍流密度;时间和长度刻度;间歇性;浮力;

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Turbulence statistics of natural airflow within a large Open Top Chamber

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