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首页> 外文会议>25th Conference on Agricultural and Forest Meteorology and 12th Joint Conference on the Applications of Air Pollution Meteorology with Aamp;WMA and Fourth Symposium on the Urban Environment May 20-24, 2002 Norfolk, Virginia >BUDGET OF VELOCITY VARIANCES ACROSS A FOREST EDGE: A COMPARISON BETWEEN FIELD, WIND TUNNEL AND NUMERICAL SIMULATION STUDIES
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BUDGET OF VELOCITY VARIANCES ACROSS A FOREST EDGE: A COMPARISON BETWEEN FIELD, WIND TUNNEL AND NUMERICAL SIMULATION STUDIES

机译：森林边缘的速度变化预算：田间，风洞和数值模拟研究的比较

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摘要

Airflow experiences a drastic adjustment when it flows across a vegetation discontinuity, for example a forest edge. The fact that different velocity components take different rates in their adjustments has been recognized in many studies. As one example, by investigating the statistics of field data, Irvine et al. (1997) reported that the adjustment of streamwise velocity variance was faster than that of vertical velocity variance in the turbulent flow across a forest edge. They also suggested that the flow distortion at the edge was responsible for the different adjusting rates. In order to understand the controlling mechanisms of flow adjustment in the transition zone, budget analyses of velocity variances will be presented and a comparison of budgets between field, wind tunnel and numerical simulation studies will be made in this paper.
机译：当气流穿过植被间断点（例如森林边缘）时，气流会经历剧烈的调整。许多研究已经认识到，不同的速度分量在其调整中会采用不同的速率。举一个例子，欧文等人通过调查现场数据的统计数据。 （１９９７）报道，在森林边缘的湍流中，水流速度变化的调整要快于垂直速度变化的调整。他们还认为，边缘的流动畸变是造成不同调节率的原因。为了理解过渡带流量调节的控制机理，本文将对速度变化进行预算分析，并对田间，风洞和数值模拟研究之间的预算进行比较。

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