Improvement of Airport Local Air Quality Modeling

Even with all the benefits an airports brings, it may produce significant impacts on those living nearby and on the environment. Lately, interest in this problem has intensified in connection with increasing air traffic (at a mean annual rate of 5–7%) and a growing public awareness of local air quality around the airports. An aircraft is an important source of air pollution in the vicinity of an airport. The PolEmiCa model uses semiempirical techniques to characterize the transportation of contaminants from the aircraft engine by jet plume and does not takes into account ground surface influence on the jet's behavior and properties. Computational Fluid dynamics codes allow the investigation of the fluid mechanics aspects of the exhaust gas jet from an aircraft engine near the ground surface and estimates basic jet parameters (height and longitudinal coordinates of jet axis due to buoyancy effect, length of jet penetration, and dispersion characteristics) for inclusion in dispersion modeling of air pollution. This paper presents the results of complex PolEmiCa model improvements by including of assessment of ground impact on an aircraft engine jet using FLUENT 6.3 software. To reveal such an impact on the parameters of the jet, numerical simulations of turbulent free and wall jets are implemented in various wind conditions.