Link between in-nozzle cavitation and jet spray in a gasoline multi-hole injector

Gavaises, E., Mirshahi, M., Nouri, J. M. & Yan, Y. (2013). Link between in-nozzle cavitation and jet spray in a gasoline multi-hole injector. Paper presented at the ILASS 2013 - 25th Annual Conference on Liquid Atomization and Spray Systems, 1-4 Sept 2013, Chania, Crete.

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Abstract

The importance of cavitation inside multi-hole injectors has been addressed in many previous investigations where the cavitation formation and its development, fuel spray characteristics and atomisation have quantified. Different types of geometrical and vortex cavitations have been previously reported inside the nozzles of multi-hole injectors with good indication of their influences on the emerging spray. However, the effect of cavitation on jet spray, its stability and liquid breakup and atomisation is not yet fully understood. The current research work is aimed to address some of the above issues. As the initial phase, the current experimental work focuses on the initiation and development of different type of cavitation inside a 15-times enlarged model of a symmetric 6-hole SIDI injector and tries to quantify the effects of the cavitation on the near nozzle jet spray in terms of jet cone angle and its stability. To achieve this, a high speed camera has been used to visualise the innozzle flow and emerging spray simultaneously.

Item Type: Conference or Workshop Item (Paper)
Additional Information: Copyright 2013, the authors.
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: School of Engineering & Mathematical Sciences > Engineering
URI: http://openaccess.city.ac.uk/id/eprint/14407

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