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Home Archives Officers Future meetings American Society of Thermal and Fluids Engineering

ISSN Online: 2379-1748

ISBN Print: 978-1-56700-472-4 (Flash Drive)

ISBN Online: 978-1-56700-471-7

3rd Thermal and Fluids Engineering Conference (TFEC)
March, 4–7, 2018, Fort Lauderdale, FL, USA

Effects of Reduced Mesh Resolution on Large Eddy Simulations of Atmospheric Boundary Layer Flow

Get access pages 169-174
DOI: 10.1615/TFEC2018.cfd.021721

Abstract

This study explores simulation of turbulent atmospheric boundary layer (ABL) flow f elds using reduced mesh resolution as a means for reducing time and computational requirements. A full resolution simulation is performed using previously developed flow felds, within OpenFOAM, in an effort to reproduce the statistical results of the original study. The reduced resolution simulation is run on a personal computer (PC) and the results are compared to the full resolution simulation as well as the original study. As previously observed, the sub-grid scale (SGS) model produces inaccurate results near the ground and a large z-component of the velocity gradient still exists. There is a exacerbation of these issues within the reduced resolution simulation, but the increase in variance and vertical velocity gradient is more pronounced.
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