CFD on Parametric Analysis of Compression Ignition Engine by using Star CCM+

D. Chaitanya Varma; Y. Raghuram; Sk. Irshad; P. Durga Prasad

Abstract

Stringent emission from the conventional vehicles draws attention of automobile researches to develop engine either high fuel efficiency and low emission of NOx, CO and unburnt hydrocarbons. Hence, there by Homogeneous charge compression ignition came to the effect. Homogeneous charge compression ignition engine is the type of engine the well organised mixture of air and fuel ratio enters into the combustion chamber, and it is compressed up to auto-ignited temperature and there by combustion takes place. HCCI combines the characteristics of both SI and CI engine. In the current study, we will discuss about the performance parameters of the HCCI engine like Pressure, Temperature, Turbulent kinetic viscosity and swirl inside the cylinder at three different speed 1000, 2000, 3000 rpms through CFD analysis. The modelling of each part like cylinder, piston, Intake manifold and exhaust manifold in CATIA v5 and Computational fluid dynamics analysis was performed on STAR CCM+ by using large eddy simulational (LES) model. As we discussed about the combustion parameters pressure, temperature, Turbulent kinetic viscosity, swirl and identified behaviour of those parameters at suction, compression, expansion and exhaust in four stroke single cylinder diesel engine at 1000rpm,2000rpm and 3000rpm.The graphs are drawn between parameters with respect to crank angle as pressure vs crank angle, temperature vs crank angle, turbulent kinetic viscosity vs crank angle, swirl vs crank angle. The maximum a pressure obtained at 2000 rpm which is 57 bar, Maximum temperature obtained at 3000 rpm which is 1399.3 k, maximum turbulent kinetic viscosity at the speed of 3000 rpm in the exhaust process is 8424.3 j/kg. The maximum swirl obtained at 3000 rpm

CFD on Parametric Analysis of Compression Ignition Engine by using Star CCM+

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