Numerical Study of the Neutral Atmospheric Boundary Layer Over Complex Terrain

We evaluate the Reynolds-averaged Navier–Stokes equations available as commercial computational fluid dynamics code for the simulation of a neutral atmospheric boundary layer and attempt to define a proper numerical simulation procedure. Four turbulence models, including two-equation and Reynolds st...

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Bibliographic Details
Published inBoundary-layer meteorology Vol. 143; no. 2; pp. 393 - 407
Main Authors Moreira, Gilberto A. A., dos Santos, André A. C., do Nascimento, Carlos A. M., Valle, Ramon M.
Format Journal Article
LanguageEnglish
Published Dordrecht Springer Netherlands 01.05.2012
Springer
Springer Nature B.V
Subjects
Analysis
Atmospheric boundary layer
Atmospheric Protection/Air Quality Control/Air Pollution
Atmospheric Sciences
Boundaries
Computer simulation
Convection, turbulence, diffusion. Boundary layer structure and dynamics
Earth and Environmental Science
Earth Sciences
Earth, ocean, space
Exact sciences and technology
External geophysics
Finite element method
Fluid dynamics
Mathematical models
Meteorology
Navier-Stokes equations
Numerical analysis
Planetary boundary layer
Reynolds stress
Topography
Turbulence
Turbulence models
United Kingdom
Scotland
Great Britain
Europe
Western Europe
British Isles, Scotland
Complex topography
Atmospheric boundary layer
Turbulence model
models
sensitivity analysis
topography
Wind velocity
digital simulation
cartography
turbulence
Reynolds stress
digitization
Navier Stokes equation
Complex terrain
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Summary:We evaluate the Reynolds-averaged Navier–Stokes equations available as commercial computational fluid dynamics code for the simulation of a neutral atmospheric boundary layer and attempt to define a proper numerical simulation procedure. Four turbulence models, including two-equation and Reynolds stress models, were evaluated together with two near-wall models. Mesh and map digitization sensitivity tests were also performed. The simulations were compared to experimental field data from the Askervein Hill in Scotland. The results show that the simulations performed with ANSYS CFX 12.1 on a proper mesh and topological map with a Reynolds stress turbulence model provided the best wind-speed predictions when compared to the experimental results.
Bibliography:ObjectType-Article-1
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ISSN:0006-8314
1573-1472
DOI:10.1007/s10546-011-9694-1