CFD Analysis of Internal Combustion Engine Processes

Abstract

Day by day the pollution of exhaust gases created by vehicles on the road increases. One way to reduce the pollution is to use an alternative fuel. This solution is long-term solution. The short –term solution to reduce the pollution is to make engines more efficient and cleaner. To make engines efficient and cleaner the knowledge of processes happening inside an internal combustion engine is required. This knowledge of processes inside in an internal combustion engine can be obtained by two ways. One way is to perform experiment on an engine, which is difficult task. Another way is the numerical experiment which is not difficult task because it do not require an expensive and time consuming measurement set-up. Due to increased computing power today it is possible to model every processes happening inside an internal combustion engine.The aim of this project is to model the processes happening inside an internal combustion engine with the help of Computational Fluid Dynamics (CFD) package Fluent 6.3. The flow field inside an engine is obviously turbulent in nature. There are various turbulent models available in Fluent which can be used to model the turbulent processes inside an internal combustion engine. The simulation was performed on a single cylinder engine with inlet and exhaust valves having different combustion chamber configuraions. The simulation was performed on four different configurations of engine.The running engine simulations give realistic results which are used for better understanding of processes happening in an internal combustion engine. The way is open for future work in this topic.