Modelling traffic air pollution in road tunnels

摘要: This paper presents two models for the description of air pollutant concentrations in road tunnels due to traffc. Turbulence is assumed depend on both atmospheric turbulence and vehicle's motion. Emissions are calculated with COPERT90 methodology (Eggleston et al., 1991). Up 34 different vehicle categories can be considered at same time, an arbitrary number vehicles travelling inside tunnel. as a function position tunnel time. Three pollutants simulated current version models, CO, NO, VOC. It also possible consider null emissions. The able effects ofan ofsinks. Flow rates outdoor ofthe time each sink. equation consen'ation mass has been solved control volumes method. Particular attention given formulation stability conditions. Sensitivity analysis was conducted verify model ans*'er input parameters such initial concentration, boundary concentra- tions vehicle-induced turbulence. Examples application urban traffic regime, including passenger cars fuels, light dut-,- trucks, heavy duty trucks motorbikes, underground railway. Simulations have carried out five working days week. @ 1997 Elsevier Science Ltd. All rights reserved.