Journal
JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS
Volume 96, Issue 10-11, Pages 1998-2006Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jweia.2008.02.062
Keywords
LES; numerical simulation; turbulent flow field; windbreak; filtered Navier-Stokes equations; porous object
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There are few practical applications for flow prediction in and around porous objects such as radiators, filters, fences or plant canopies. Reproduction of the configuration of solid obstacles in the fine mesh discretization is a direct way to make numerical calculations on porous objects. However, calculations using the fine mesh increase the computational load and cost a lot of time and money. In order to reduce these factors, we applied space averaging to the Navier-Stokes equations and derived filtered equations with a subgrid scale turbulent modeling for the large eddy simulation (LES). This paper demonstrates how we were able to calculate the space-averaged property of flows with coarse meshes without a heavy computational load. Finally, we also present a numerical calculation for the turbulent field around a windbreak placed oil a flat plane and compare the results to a wind tunnel test data. (c) 2008 Published by Elsevier Ltd.
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