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A LIMITED-LENGTH-SCALE k-ε MODEL FOR THE NEUTRAL AND STABLY-STRATIFIED ATMOSPHERIC BOUNDARY LAYER

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Abstract

Analytical and numerical models of the neutral and stably-stratifiedatmospheric boundary layer are reviewed. Theoretical arguments andcomputational models suggest that a quasi-steady state is attainable in aboundary layer cooled from below and it is shown how this may be incorporatedwithin a time-steady, one-dimensional model. A new length-scale-limitedk-ε model is proposed for flows where a global maximum mixing length isimposed by the finite boundary-layer depth or, in stably-stratifiedconditions, by the Obukhov length, whilst still reducing to a form consistentwith the logarithmic law in the surface layer. Simulations compare favourablywith data from the Leipzig experiment and from Cardington airfield inEngland.

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Author notes

  1. DAVID D. APSLEY

    Present address: Dept. of Mechanical Engineering, UMIST, Manchester, M60 1QD, England

Authors and Affiliations

  1. University of Surrey, Guildford, GU2 5XH, England

    IAN P. CASTRO

Authors
  1. DAVID D. APSLEY
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  2. IAN P. CASTRO
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APSLEY, D.D., CASTRO, I.P. A LIMITED-LENGTH-SCALE k-ε MODEL FOR THE NEUTRAL AND STABLY-STRATIFIED ATMOSPHERIC BOUNDARY LAYER. Boundary-Layer Meteorology 83, 75–98 (1997). https://doi.org/10.1023/A:1000252210512

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