Investigation of Pollutants Formation in a Diesel Engine Using Numerical Simulation

Abstract

The current study aims to explore the combustion process in a diesel engine and investigate the behavior of pollutant formation at different time events and different locations in the combustion chamber. The time event for maximum rate of production of pollutant soot is also investigated. Further, time events are investigate at which almost all the amounts of pollutants soot and nitric oxide have been produced. The combustion simulation is performed on a 3D sector. Finite volume method is used for numerically solving the partial differential equations that govern the flow along with Transition SST turbulence model. Eddy dissipation model is used for turbulence chemistry interaction. For soot calculation, Moss-Brookes model is used which has less empiricism and theoretically provides superior accuracy.

CFD Analysis of Sector Combustion Simulation in Four Stroke Direct Injection Diesel Engine

“…The task of reducing pollution may be accomplished by improving the engine design to achieve complete and perfect combustion which is highly dependent on the uniformity of the air-fuel mixture. (Zahid & Syed, 2021). Large scale flow structures such as swirl and tumble increase the level of turbulence at the time of ignition which, in turn, strongly affect both pollutant emissions and fuel efficiency (El-Adawy et al, 2017).…”