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Flow and pollutant dispersion within the Canal Grande channel in Venice (Italy) via CFD techniques
Dipartimento di Informatica, Università Ca' Foscari Venezia, Mestre-Venezia, Italy; Dipartimento di Scienza Dei Materiali, University of Salento, Lecce, Italy.
Dipartimento di Informatica, Università Ca' Foscari Venezia, Mestre-Venezia, Italy.
Dipartimento di Scienza Dei Materiali, University of Salento, Lecce, Italy.
Dipartimento di Scienza Dei Materiali, University of Salento, Lecce, Italy.
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2010 (English)In: HARMO 2010 - Proceedings of the 13th International Conference on Harmonisation within Atmospheric Dispersion Modelling for Regulatory Purposes / [ed] Albergel, A., 2010, 760-764 p.Conference paper, Published paper (Refereed)
Abstract [en]

The present paper is aimed at the analysis of flow and pollutant dispersion in a portion of the Canal Grande (Grand Canal) in Venice (Italy) by means of both Computational Fluid Dynamics (CFD) FLUENT simulations and wind tunnel experiments performed at the University of Gävle (Sweden). For this application, Canal Grande can be viewed as a sort of street canyon where the bottom surface is water and bus boat emissions are the major source of pollution. Numerical investigations were made to assess the effect of the water surface on air flow and pollutant concentrations in the atmosphere. One of the challenges has been to deal with the interface between two immiscible fluids which requires ad-hoc treatment of the wall in terms of the numerical scheme adopted and the grid definition which needs to be much finer than in typical numerical airflow simulations in urban street canyons. Preliminary results have shown that the presence of water at the bottom of the street canyon modifies airflow and turbulence structure with direct consequences on concentration distribution within the domain.

Place, publisher, year, edition, pages
2010. 760-764 p.
Keyword [en]
Canal Grande, CFD simulations, Multiphase model, Street canyon, Wind tunnel experiments
National Category
Architectural Engineering
Identifiers
URN: urn:nbn:se:hig:diva-10540Scopus ID: 2-s2.0-84984536060OAI: oai:DiVA.org:hig-10540DiVA: diva2:444514
Conference
13th International Conference on Harmonisation within Atmospheric Dispersion Modelling for Regulatory Purposes, HARMO 2010, 1-4 June 2010, Paris, France
Available from: 2011-09-29 Created: 2011-09-29 Last updated: 2017-04-10Bibliographically approved

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