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Modelling tracer dispersion from landfills

Carpentieri, M; Giambini, P; Corti, A; (2008) Modelling tracer dispersion from landfills. ENVIRONMENTAL MODELING & ASSESSMENT , 13 (3) 415 - 429. 10.1007/s10666-007-9103-9. Green open access

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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.

Type: Article
Title: Modelling tracer dispersion from landfills
Open access status: An open access version is available from UCL Discovery
DOI: 10.1007/s10666-007-9103-9
Publisher version: http://dx.doi.org/10.1007/s10666-007-9103-9
Language: English
Additional information: The original publication is available at www.springerlink.com
Keywords: landfill, wind tunnel, PIV, air pollution, validation, dispersion modelling
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
URI: https://discovery.ucl.ac.uk/id/eprint/1383725
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