4.5 Assessment of a Lattice Boltzmann Model for Canopy Flow Using Laboratory and Field Measurements

Monday, 12 May 2014: 4:30 PM
Bellmont A (Crowne Plaza Portland Downtown Convention Center Hotel)
Yardena Bohbot-Raviv, Israel Institute for Biological Research, Ness Ziona, Israel; and S. Moltchanov and U. Shavit

The flow through and above forest canopies which covers much of the Earth's surface is abundantly non-uniform and complex. Since it is an essential ingredient in modeling multi-scale transport, material evaporation and dispersion, simplified flow models, which can incorporate additional physics, are advantageous. In this talk a two-dimension lattice Boltzmann model of the double-averaged Navier-Stokes (DANS) equations is presented. The model solutions are validated using detailed Particle Image Velocimetry (PIV) measurements obtained at various regions along a finite artificial canopy. Field measurements taken within and above a peach orchard are used in order to further test the capabilities of the model to account for the effects of leaf-area-density (LAD) and turbulence stability.
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