Large-eddy simulation of windbreak flow

A large-eddy simulation has been performed of turbulent flow around multiple windbreaks set within a wheat canopy under neutral stability conditions. The simulation is validated against a wind tunnel data set taken under similar conditions. Velocity profiles and second-order statistics are presented...

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Bibliographic Details
Published in:Boundary-layer meteorology 1998-05, Vol.87 (2), p.275-306
Main Authors: PATTON, E. G, SHAW, R. H, JUDD, M. J, RAUPACH, M. R
Format: Article
Language:English
Subjects:
Convection, turbulence, diffusion. Boundary layer structure and dynamics
Earth, ocean, space
Exact sciences and technology
External geophysics
Meteorology
Spatial distribution
Studies
Turbulence
Turbulent flow
Wind tunnels
Windbreaks
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Summary:A large-eddy simulation has been performed of turbulent flow around multiple windbreaks set within a wheat canopy under neutral stability conditions. The simulation is validated against a wind tunnel data set taken under similar conditions. Velocity profiles and second-order statistics are presented and compared to those found in the wind tunnel. From the numerical simulation, we discuss spatial distributions of instantaneous velocity fields and pressure statistics, which are important and telling features of the flow that are difficult to measure experimentally. We present a discussion of the momentum balance at various locations with respect to the windbreak, and similarly, we introduce the budget of a passive scalar. These discussions show the importance of the terms in each budget equation as they vary upstream and downstream of the windbreak.[PUBLICATION ABSTRACT]
ISSN:0006-8314
1573-1472
DOI:10.1023/A:1000945626163