An investigation of string cavitation in a true-scale fuel injector flow geometry at high pressure
journal contributionposted on 08.04.2010 by Ben Reid, Graham Hargrave, Colin Garner, Graham Wigley
Any type of content formally published in an academic journal, usually following a peer-review process.
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.
- Mechanical, Electrical and Manufacturing Engineering