ON SOME AERODYNAMIC CHARACTERISTICS OF ATMOSPHERIC BOUNDARY LAYER
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摘要: 本文在定常和中性温度层结条件下,首先介绍了均匀平坦地面上大气边界层的一些空气动力学特征,并将大气边界层与一般空气动力学边界层作了比较。然后介绍了地面粗糙度分布有阶跃变化以及非平坦地形上的大气边界层特征。文中说明,气流的平均流场结构以及湍流特性与均匀平坦地面的情形相比有显著不同。最后,提出了一些有待今后进一步研究的问题。Abstract: In this paper, general properties of the atmospheric boudary layer (ABL)undcr homogeneous, surface conditions are described,including a comparison of ABL with aerodynamic boundary layer. Also, the aerodynamic characteristics of ABL over the surfaces which experience a sudden change in roughness and over terrain are discussed. With respect to ABL dynamics, some problems, important for further studies, are proposed by the author.
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Key words:
- atmospheric boundary layer /
- aerodynamics /
- turbulence
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