Showing papers by "Silvana Di Sabatino published in 2011"
TL;DR: In this paper, the authors examined the prediction accuracy of pollutant dispersion within an urban street canyon of width to height ratio W/H=1 using two steady-state Reynolds-averaged Navier-Stokes (RANS) turbulence closure models, the standard k-e and Reynolds Stress Model (RSM), and Large Eddy Simulation (LES) coupled with the advection-diffusion method for species transport.
252 citations
TL;DR: In this article, the aerodynamic effects of trees on local scale flow and pollutant concentration in idealized street canyon configurations by means of laboratory experiments and Computational Fluid Dynamics (CFD).
201 citations
University of Salento1, Ca' Foscari University of Venice2, Aarhus University3, University of Siegen4, University of Hamburg5, Massachusetts Institute of Technology6, University of Aveiro7, National Research Council8, Finnish Meteorological Institute9, Kone10, Aristotle University of Thessaloniki11, University of Bielsko-Biała12, Budapest University of Technology and Economics13, University of Western Macedonia14, Complutense University of Madrid15, Central Institution for Meteorology and Geodynamics16, Danish Meteorological Institute17, Tomsk State University18
TL;DR: In this paper, the authors describe the use of a general methodology tailored to the evaluation of micro-scale meteorological models applied to flow and dispersion simulations in urban areas, which has been tested through a large modelling exercise involving many groups across Europe.
Abstract: The aim of this paper is to describe the use of a general methodology tailored to the evaluation of micro-scale meteorological models applied to flow and dispersion simulations in urban areas. This methodology, developed within COST 732, has been tested through a large modelling exercise involving many groups across Europe. The major test case used is the Mock Urban Setting Test (MUST) experiment representing an idealised urban area. It is emphasised that a full model evaluation is problem-dependent and requires several activities including a statistical validation that requires a careful choice of the metrics for the comparison with measurements.
69 citations
TL;DR: In this paper, the application of Computational Fluid Dynamics (CFD) and integral approaches to the study of effects of obstacles on pollutant dispersion from a point source placed within an idealised urban area (MUST) is discussed.
Abstract: This paper looks at the application of Computational Fluid Dynamics (CFD) and integral approaches to the study of effects of obstacles on pollutant dispersion from a point source placed within an idealised urban area (MUST). This study is part of a modelling exercise within the COST Action 732. Numerical results are compared with wind tunnel data. We use the CFD code FLUENT and the dispersion model ADMS-Urban. The CFD model predicts concentrations more accurately than the integral model. However, both models results satisfy accepted statistical criteria, showing that those criteria should not be the only way of evaluating a model.
12 citations
TL;DR: The protocol was proposed with building-resolving models in mind, but integral models have also been included and the suggested approach can be used for further micro-scale model evaluation and for the standardisation of their applications.
Abstract: This paper reports on the stages forming a model evaluation protocol for urban flow and dispersion models proposed within the COST Action 732 on “Quality Assurance and Improvement of Micro-Scale Meteorological Models”. It discusses the different components forming model evaluation with emphasis on validation and implementation of the protocol for the test case Mock Urban Setting Test (MUST). The protocol was proposed with building-resolving models in mind, but integral models have also been included. The suggested approach can be used for further micro-scale model evaluation and for the standardisation of their applications.
2 citations
TL;DR: In this paper, the authors used the Emissions and Dispersion Modelling System (EDMS) for Heathrow Airport and its surroundings to simulate the year 2002 and the results formed part of a submission to the UK government in July 2006.
Abstract: Air quality modelling near airports has received attention due to the impact of emissions from aircrafts near ground level. This work is part of the model inter-comparison study undertaken for the Department of Transport in connection with air quality near Heathrow Airport. Results formed part of a submission to the UK government in July 2006. The Emissions and Dispersion Modelling System (EDMS) was used. Our contribution required the setting up and running of EDMS for Heathrow Airport and its surroundings to simulate the year 2002. NOX, NO2 and PM10 were chosen for the study; these being of particular concern.
2 citations