What is it about?
This paper is about the influence of a single oil droplet on the ambient gaseous mixture. The ignition delay, pressure oscillation, flame ball expanding speed, the droplet surface temperature, droplet evaporation rate and the temperature distribution in the gas phase around the droplet are analyzed. The droplet would explode after the ignition of gas phase, and the droplet would influence the pressure oscillation in the combustion chamber. However, under these circumstances, the droplet would not influence the ignition delay of the ambient gaseous mixture very much.
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Why is it important?
Droplet ignition phenomenon is investigated under very high-temperature and high-pressure conditions which have hardly been performed by the previous researches experimentally, especially for oil droplet. This study is essential for revealing the mechanism of pre-ignition (one of the abnormal combustion phenomena harmful for engines) induction in engines. It is also significant to fundamental researches about droplet evaporation and ignition.
Perspectives
This paper could be as reference for the researchers who performs investigation on droplet ignition and the interaction between the droplet and gas phase, in the field of thermal and power engineering, automotive and aerospace engineering, as well as other related areas. I hope the phenomena and the process of analysis shown in this paper would be interesting to related researchers.
Shubo Fei
Tsinghua University
Read the Original
This page is a summary of: Ignition of a Single Lubricating Oil Droplet in Combustible Ambient Gaseous Mixture under High-Temperature and High-Pressure Conditions, Combustion Science and Technology, November 2018, Taylor & Francis,
DOI: 10.1080/00102202.2018.1542382.
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