A computational investigation on cavitating flow characteristic of innovative nozzle structures in diesel engine

DOI

10.2991/iccte-17.2017.127How to use a DOI?

Keywords

innovative nozzle structures; cavitating flow; angle of inclination; numerical simulation

Abstract

The relative differences in the flow characteristics of the fuel within nozzle holes of diesel injectors significantly influences the atomization and combustion characteristics of diesel engines. The numerical simulation of cavitating flow developed fully in nozzle holes of a vertical four hole injector with mixture homogeneous equilibrium model was carried out. And then the effects of four essential parameters (the use of innovative nozzle construction, elliptical geometry nozzle hole, the ratio of nozzle's length to orifice's diameter and hole inclination angle) on the cavitating flow in nozzle holes were studied. It is finally concluded that the medium expansion nozzle is better than that of the ordinary nozzle and the three-stage tapered nozzle and elliptical geometry with vertically oriented major axis are less prone to cavitate and the cavitation is more likely to occur when the nozzle mounting angle is smaller.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Jiarui Li
AU  - Bo Yuan
AU  - Liangming Pan
AU  - Shuai Jia
PY  - 2017/07
DA  - 2017/07
TI  - A computational investigation on cavitating flow characteristic of innovative nozzle structures in diesel engine
BT  - Proceedings of the 2017 2nd International Conference on Civil, Transportation and Environmental Engineering (ICCTE 2017)
PB  - Atlantis Press
SP  - 716
EP  - 727
SN  - 2352-5401
UR  - https://doi.org/10.2991/iccte-17.2017.127
DO  - 10.2991/iccte-17.2017.127
ID  - Li2017/07
ER  -