Experimental Studies of the Turbulence Structure Parameters of the Convective Boundary Layer
Experimental Studies of the Turbulence Structure Parameters of the Convective Boundary Layer
复制标题
对流边界层湍流结构参数的实验研究
DOI：
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发表时间：
1983
期刊：
影响因子：
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通讯作者：
J. Fontan
中科院分区：
文献类型：
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作者：
A. Druilhet;J. Frangi;D. Guédalia;J. Fontan
本文介绍了一组有关对流边界层湍流特性的实验数据。这些数据是1973年至1978年在五个飞行区上空进行的多次试验中通过装有仪表的飞机获得的。本报告仅包含具有弱动力不稳定性的干对流条件。计算的量是感热和潜热的垂直湍流通量，垂直风分量的二阶和三阶矩，潜在的温度和湿度，耗散和光谱特性和长度尺度。所有这些量使用Deardorff的对流相似性假设进行归一化。一个特殊的情况下被认为是湿度，它是必要的两个边界条件之间进行选择：蒸发和夹带通量。后者被选中。
Abstract We present a collection of experimental data concerning turbulent characteristics of the convective boundary layer. These data were obtained by means of instrumented aircraft during numerous experiments carried out above five flight areas from 1973 to 1978. Only dry convective conditions with weak dynamic instability are contained in this report. The computed quantities are vertical turbulent fluxes of sensible and latent heat, second- and third-order moments of vertical wind component, potential temperature and humidity, dissipative and spectral characteristics and length scales. All these quantities are normalized using the convective similarity hypothesis of Deardorff. A particular case is considered for humidity where it is necessary to choose between the two boundary conditions: evaporation and entrainment flux. The latter is chosen.