Topical Problems of Fluid Mechanics


Institute of Thermomechanics AS CR, v.v.i.	CTU in Prague Faculty of Mech. Engineering Dept. Tech. Mathematics	MIO Université du Sud Toulon Var - AMU - CNRS - IRD	Czech Pilot centre ERCOFTAC

Numerical Study of Stratification Effects on Local Wind Flow and Pollution Dispersion
Bodnár T., Fraunié P.
Abstract:
The aim of this paper is to demonstrate and clarify the various effects of stable stratifcation on the wind ow over wall mounted obstacles in atmospheric boundary layer. The example being solved is motivated by the wind ow and pollution dispersion studies in the proximity of various technological blocks in the area of opencast coal mine. The equations of uid motion are based on the Boussinesq approximation of momentum equations, supplemented by the divergence-free incompressibility constraint. Turbulence is described by a modifed SSTk -? model. Concentration of heavy particles is considered and described by an additional transport equation
Keywords:
atmospheric boundary layer, stratifcation, turbulence, SSTk-? model, finite-volume

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In Proceedings Topical Problems of Fluid Mechanics 2015, Prague, 2015 Edited by David Šimurda and Tomáš Bodnár, pp. 11-16 ISBN 978-80-87012-55-0 (Print) ISSN 2336-5781 (Print)