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Large-Eddy Simulation of Windbreak Flow

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Abstract

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.

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Author notes

  1. Edward G. Patton

    Present address: Department of Soil, Water, and Climate, University of Minnesota, St. Paul, Minnesota, U.S.A, 55108

Authors and Affiliations

  1. Department of Land, Air and Water Resources, University of California, Davis, U.S.A

    Edward G. Patton & Roger H. Shaw

  2. Department of Soil, Water, and Climate, University of Minnesota, St. Paul, Minnesota, U.S.A, 55108

    Murray J. Judd

  3. National Center for Atmospheric Research, P. O. Box 3000, Boulder, CO, U.S.A, 80307-3000

    Michael R. Raupach

Authors
  1. Edward G. Patton
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  2. Roger H. Shaw
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  3. Murray J. Judd
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  4. Michael R. Raupach
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Patton, E.G., Shaw, R.H., Judd, M.J. et al. Large-Eddy Simulation of Windbreak Flow. Boundary-Layer Meteorology 87, 275–307 (1998). https://doi.org/10.1023/A:1000945626163

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