Simulation of Convective Atmospheric Boundary Layer Flows Using a Lattice Boltzmann Method

Yansen Wang, US Army Research Laboratory, Adelphi, MD, United States, Benjamin MacCall, US Army Research Lab, Adelphi, MD, United States, Christopher M Hocut, US Army Research Laboratory, Wsmr, NM, United States and Harindra Joseph Fernando, University of Notre Dame, Department of Civil and Environmental Engineering and Earth Sciences, Notre Dame, IN, United States
Abstract:
A Lattice Boltzmann model (LBM) prototype was developed recently at Army Research Laboratory. As an initial validation process, we used LBM to simulate the thermally driven flows such as Rayleigh-Benard convection and instability, thermally driven upslope flows. Two-dimensional laboratory data are compared with the simulation results. The scaling parameters were also computed from simulation results to characterize flow physics. The model was extended to simulate convective atmospheric boundary-layer flows over flat and sloped terrain. Some preliminary results will be presented at this meeting.
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