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

Friday, 19 December 2014
Yansen Wang1, Benjamin MacCall1, Christopher M Hocut2 and Harindra Joseph Fernando3, (1)US Army Research Lab, Adelphi, MD, United States, (2)US Army Research Laboratory, White Sands Missile, NM, United States, (3)Univ of Notre Dame, Notre Dame, IN, United States
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.