Boundary-Layer Meteorology

, Volume 70, Issue 4, pp 341–367

Development of a non-linear mixed spectral finite difference model for turbulent boundary-layer flow over topography

  • Dapeng Xu
  • Keith W. Ayotte
  • Peter A. Taylor
Article

DOI: 10.1007/BF00713775

Cite this article as:
Xu, D., Ayotte, K.W. & Taylor, P.A. Boundary-Layer Meteorol (1994) 70: 341. doi:10.1007/BF00713775

Abstract

Further development of the non-linear mixed spectral finite difference (NLMSFD) model of turbulent boundary-layer flow over topography is documented. This includes modifications and refinements to the solution procedure, the incorporation of second-order turbulence closures to the model and the three-dimensional extension of the model. Based on these higher order closures, linear limitations, boundary-layer approximation and non-linear effects are discussed. The impact of different turbulence closures on the prediction of the NLMSFD model is also demonstrated. Furthermore, sample results for 3D idealized topography (sinusoidal) are presented. The parameterization of drag over small-scale topography is also addressed.

Copyright information

© Kluwer Academic Publishers 1994

Authors and Affiliations

  • Dapeng Xu
    • 1
  • Keith W. Ayotte
    • 1
  • Peter A. Taylor
    • 1
  1. 1.Department of Earth and Atmospheric ScienceYork UniversityNorth YorkCanada
  2. 2.NCARAtmospheric Environment Service of Canada MMMBoulderUSA

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