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Modelling tracer dispersion from landfills

Carpentieri, M, Giambini, P and Corti, A (2008) Modelling tracer dispersion from landfills Environmental Modeling and Assessment, 13 (3). 415 - 429. ISSN 1420-2026

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Abstract

Several wind tunnel experiments of tracer dispersion from reduced-scale landfill models are presented in this paper. Different experimental set-ups, hot-wire anemometry, particle image velocimetry and tracer concentration measurements were used for the characterisation of flow and dispersion phenomena nearby the models. The main aim of these experiments is to build an extensive experimental data set useful for model validation purposes. To demonstrate the potentiality of the experimental data set, a validation exercise on several mathematical models was performed by means of a statistical technique. The experiments highlighted an increase in pollutant ground level concentrations immediately downwind from the landfill because of induced turbulence and mean flow deflection. This phenomenon turns out to be predominant for the dispersion process. Tests with a different set-up showed an important dependence of the dispersion phenomena from the landfill height and highlighted how complex orographic conditions downwind of the landfill do not affect significantly the dispersion behaviour. Validation exercises were useful for model calibration, improving code reliability, as well as evaluating performances. The Van Ulden model proved to give the most encouraging results.

Item Type: Article
Uncontrolled Keywords: landfill, wind tunnel, PIV, air pollution, validation, dispersion modelling, ODOR, VALIDATION, SIMULATION
Divisions: Faculty of Engineering and Physical Sciences > Mathematics
Depositing User: Symplectic Elements
Date Deposited: 23 Jun 2011 04:33
Last Modified: 08 Nov 2013 12:07
URI: http://epubs.surrey.ac.uk/id/eprint/3014

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