Suscripción a Biblioteca: Guest
Página principal de la Biblioteca Digital de ICHMT Año actual Archivos Comité Ejecutivo Centro Internacional de Transferencia de Calor y Masa

On modeling and simulations of photochemical smog formation in simplif ed and complex urban areas

DOI: 10.1615/ICHMT.2015.THMT-15.1510
pages 683-686

C. Muilwijk
Transport Phenomena Section, Department of Chemical Engineering, Faculty of Applied Sciences, Delft University of Technology, Julianalaan 136, 2628 BL Delft, The Netherlands

P.J.C. Schrijvers
Transport Phenomena Section, Department of Chemical Engineering, Faculty of Applied Sciences, Delft University of Technology, Julianalaan 136, 2628 BL Delft, The Netherlands

Sasa Kenjeres
Transport Phenomena Section, Department of Chemical Engineering, Faculty of Applied Sciences, Delft University of Technology and J.M. Burgerscentrum for Fluid Mechanics, Delft, The Netherlands

Sinopsis

In the present study we address numerical modeling and simulations of f ow, turbulence and reactive pollutant distributions (smog formation) within and over simplif ed (laboratory scale) and complex (real scale) urban areas. We have extended the recently proposed seamless hybrid T-RANS/VLES approach ([1], [2]) with additional set of the reactive scalars, to represent chemistry of the photochemical smog formation. The smog is generated as a result of a chemical reaction of nitrogen oxides and volatile organic compounds in atmosphere, which is triggered by sunlight. The presence of nitrogen oxides is caused by traff c or industrial emissions. We demonstrate that application of the Generic Reaction Set (GRS) model represents a good compromise between the physical accuracy, numerical eff ciency and robustness in predicting smog formation. The model is validated first by comparisons with experiments for a reactive plume dispersion in decaying turbulence where good results are obtained in predicting radial prof les of NO, NO2 and O3 at different locations behind the point emission source, proving correct modeling of the chemistry. Then, we test combined effects of f ow recirculation and different exposure to the sunlight within a laboratory-scale street canyons. The GRS model predicted local ozone distributions in good agreement with observations. Finally, a real-scale environmental applications (one of neighborhoods in city of Rotterdam, The Netherlands) is presented for typical approaching wind conditions and localized pollution emissions from the main roads.

ICHMT Digital Library

Bow shocks on a jet-like solid body shape. Thermal Sciences 2004, 2004. Pulsed, supersonic fuel jets - their characteristics and potential for improved diesel engine injection. PULSED, SUPERSONIC FUEL JETS - THEIR CHARACTERISTICS AND POTENTIAL FOR IMPROVED DIESEL ENGINE INJECTION
View of engine compartment components (left). Plots of temperature distributions in centreplane, forward of engine (right). CHT-04 - Advances in Computational Heat Transfer III, 2004. Devel... DEVELOPMENT AND CURRENT STATUS OF INDUSTRIAL THERMOFLUIDS CFD ANALYSIS
Pratt & Whitney's F-135 Joint Strike Fighter Engine under test in Florida is a 3600F class jet engine. TURBINE-09, 2009. Turbine airfoil leading edge stagnation aerodynamics and heat transfe... TURBINE AIRFOIL LEADING EDGE STAGNATION AERODYNAMICS AND HEAT TRANSFER - A REVIEW
Refractive index reconstructed field. (a) Second iteration. (b) Fourth iteration. Radiative Transfer - VI, 2010. Theoretical development for refractive index reconstruction from a radiative ... THEORETICAL DEVELOPMENT FOR REFRACTIVE INDEX RECONSTRUCTION FROM A RADIATIVE TRANSFER EQUATION-BASED ALGORITHM
Two inclusion test, four collimated sources. Radiative Transfer - VI, 2010. New developments in frequency domain optical tomography. Part II. Application with a L-BFGS associated to an inexa... NEW DEVELOPMENTS IN FREQUENCY DOMAIN OPTICAL TOMOGRAPHY. PART II. APPLICATION WITH A L-BFGS ASSOCIATED TO AN INEXACT LINE SEARCH