MSE Research Project Database

Theoretical and numerical study of auto-ignition


Project Leader: Mohsen Talei
Collaborators: Yi Yang
Primary Contact: Mohsen Talei (mohsen.talei@unimelb.edu.au)
Keywords: combustion and emissions; energy efficiency; fluid dynamics; fluid mechanics
Disciplines: Mechanical Engineering
Domains: Optimisation of resources and infrastructure
Research Centre: Advanced Centre for Automotive Research and Testing (ACART)

Internal combustion engines are an essential part of our modern life. At the same time, they have a significant contribution to the increased level of greenhouse gas emissions. As a result, many researchers have devoted their time to develop highly efficient engines with a low level of emission produced. This requires a sound understanding of the combustion process inside the internal combustion engines. Auto-ignition is the main driver of the combustion initiation in a diesel engine. Furthermore, it is a major drawback in developing more efficient spark ignition engines with higher compression ratios. In this type of engine, ignition is initiated with a spark plug, and increasing the compression ratio more than an acceptable level will lead to auto-ignition of the end gas, therefore resulting in an unwanted phenomenon known as ‘engine knock’.  
 
The aim of this project is to gain an improved understanding of auto-ignition characteristics under engine-relevant conditions using theory and numerical simulation.  This project will involve high-fidelity simulation of turbulent combustion and therefore a strong background in combustion and computational fluid dynamics is desirable.
 
Further information: http://people.eng.unimelb.edu.au/mohsent/