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中国沙漠 ›› 2003, Vol. 23 ›› Issue (4): 337-346.

• 研究综述 •    下一篇

空气动力学粗糙度的物理与实践意义

刘小平, 董治宝   

  1. 中国科学院 寒区旱区环境与工程研究所沙漠与沙漠化重点实验室, 甘肃 兰州 730000
  • 收稿日期:2002-01-22 修回日期:2002-04-15 出版日期:2003-08-20 发布日期:2003-08-20
  • 作者简介:刘小平(1972-),女(汉族),四川威远县人,副研究员,博士,主要从事风沙物理研究。
  • 基金资助:
    国家重点基础研究发展规划"中国北方沙漠化过程及其防治研究"(G2000048702);国家杰出青年基金(40225003)资助

Review of Aerodynamic Roughness Length

LIU Xiao-ping, DONG Zhi-bao   

  1. The Key Laboratory of Desert and Desertification, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China
  • Received:2002-01-22 Revised:2002-04-15 Online:2003-08-20 Published:2003-08-20

摘要: 空气动力学粗糙度是风沙边界层的一个重要参数。文章回顾了空气动力学粗糙度概念的由来;用流体力学的量纲分析法和数学方法,从两个不同的角度推导了空气动力学粗糙度;阐述了空气动力学粗糙度的物理与实践意义;简明介绍了空气动力学粗糙度的分类和各种不同下垫面空气动力学粗糙度的主要研究成果,就目前研究中存在的问题、研究趋势等方面做了探讨。

关键词: 空气动力学粗糙度, 分类, 物理及实践意义

Abstract: Aerodynamic roughness length is an important parameter of atmospheric boundary layer.There have been important advances in the studying of it in recent years.In this review,attention is directed towards five important aspects of aerodynamic roughness length:①origin of aerodynamic roughness length,②derivation of aerodynamic roughness length both by applying Buckingham's π-method and mathematical method,③physical significance of aerodynamic roughness length,④classification of aerodynamic roughness length,and ⑤the major research results of aerodynamic roughness length on different underlying surfaces.

Key words: aerodynamic roughness length, classification, significance

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