Boundary-Layer Meteorology

, Volume 83, Issue 1, pp 75–98

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

Authors

  • DAVID D. APSLEY
    • Dept. of Mechanical EngineeringUMIST
  • IAN P. CASTRO
    • University of Surrey
Article

DOI: 10.1023/A:1000252210512

Cite this article as:
APSLEY, D.D. & CASTRO, I.P. Boundary-Layer Meteorology (1997) 83: 75. doi:10.1023/A:1000252210512

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.

Atmospheric boundary layer Stable stratification Turbulence modelling k-ε model

Copyright information

© Kluwer Academic Publishers 1997