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Inderscience, International Journal of Environment and Pollution, 1/2/3/4(48), p. 164

DOI: 10.1504/ijep.2012.049663

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Sensitivity analysis of a concentration fluctuation model to dissipation rate estimates

Journal article published in 2012 by Andrea Amicarelli, Pietro Salizzoni, Giovanni Leuzzi, Paolo Monti, Lionel Soulhac ORCID, François-Xavier Cierco, Francis Leboeuf
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

Lagrangian dispersion models require estimates of the local dissipation rate (epsilon) of turbulent kinetic energy (k). In this study, we evaluate the sensitivity of a Lagrangian model to different estimates of e in simulating passive scalar dispersion in a turbulent boundary layer over a rough surface. Two different estimates of epsilon are used to simulate pollutant dispersion emitted by a linear elevated source with a Lagrangian model which integrates a macromixing and a micromixing scheme. Comparison between numerical and experimental results allows us to discuss the performance of the model and to define its sensitivity to epsilon.