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An investigation of string cavitation in a true-scale fuel injector flow geometry at high pressure

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journal contribution
posted on 08.04.2010 by Ben Reid, Graham Hargrave, Colin Garner, Graham Wigley
String cavitation has been studied in an optical automotive size fuel injector with true-scale flow geometry at injection pressures of up to 2050 bar. The multihole nozzle geometry studied allowed observation of the hole-to-hole vortex interaction and, in particular, that of a bridging vortex in the sac region between the holes. A dependency on Reynolds number was observed in the formation of the visible, vapor filled vortex cores. Above a threshold Reynolds number, their formation and appearance during a 2 ms injection event was repeatable and independent of upstream pressure and cavitation number.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Citation

REID, B.A.....et al., An investigation of string cavitation in a true-scale fuel injector flow geometry at high pressure. Physics of Fluids, 22(031703)

Publisher

© American Institute of Physics

Version

VoR (Version of Record)

Publication date

2010

Notes

This article was published in the journal, Physics of fluids and is also available at: http://dx.doi.org/10.1063/1.3372174

ISSN

1070-6631

Language

en

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