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A Turbulence-based Model for Resolving Velocity arid Temperature Profiles In the Atmospheric Surface Layer

机译:基于湍流的大气表层速度和温度剖面解析模型

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摘要

The goal of this paper is to demonstrate the advantages of coupling the integrated Monin-Obukhov similarity functions with an algebraic turbulence equation to resolve the profiles of temperature and velocity in the atmospheric surface layer. The latter equation is derived using the definition of turbulent viscosity from the k-t turbulence model. The proposed surface-layer model is validated with eddy covariance and profile measurements from the CASES99 experiment and the results are compared with classic flux-profile techniques. In doing so, the relative benefits of the presented formulation become apparent. Firstly, the addition of a turbulence model improves convergence in the moderate to very stable regime. Secondly, the addition of an extra equation allows the four atmospheric parameters of interest (u~* 9~* L and ZQ) to be resolved simultaneously. Furthermore, the definition of turbulent viscosity can be used to reformulate the Monin-Obukhov equations for the very stable limit.
机译:本文的目的是证明将集成的Monin-Obukhov相似度函数与代数湍流方程耦合以解决大气表层温度和速度分布的优点。后一个方程式是使用k-t湍流模型中的湍流粘度定义得出的。拟议的表面层模型已通过CASES99实验的涡动协方差和轮廓测量进行了验证,并将结果与​​经典的通量轮廓技术进行了比较。这样,所提出的制剂的相对益处变得显而易见。首先,增加湍流模型可改善中度到非常稳定状态下的收敛性。其次,添加一个额外的方程式可以同时解析四个感兴趣的大气参数(u〜* 9〜* L和ZQ)。此外,湍流粘度的定义可用于将Monin-Obukhov方程重新表述为非常稳定的极限。

著录项

  • 来源
    《Wind Engineering》 |2006年第4期|p. 317-340|共24页
  • 作者单位

    CRC -Nordic Environment Aerodynamics of Wind Turbines Ecole de technologic superieurej 100, rue Notre-Dame Ouest, Montreal, Quebec, Canada, H3C IK3;

    CRC -Nordic Environment Aerodynamics of Wind Turbines Ecole de technologic superieurej 100, rue Notre-Dame Ouest, Montreal, Quebec, Canada, H3C IK3;

  • 收录信息 美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 风能、风力机械;
  • 关键词

  • 入库时间 2022-08-18 00:26:10

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