|Table of Contents|

Experiment and simulation on atomization characteristics of screw centrifugal nozzle(PDF)

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]

Issue:
2015年06期
Page:
21-26
Research Field:
研究与设计
Publishing date:

Info

Title:
Experiment and simulation on atomization characteristics of screw centrifugal nozzle
Author(s):
WU Gaoyang;  SU Lingyu;  NIE Wansheng;  HE Haobo;  QIAO Ye
Equipment Academy, Beijing 101416, China
Keywords:
screw centrifugal nozzleatomization characteristicVOF modelspray angle
PACS:
V434-34
DOI:
-
Abstract:
The spray morphology and angle variation law of screw centrifugal nozzle were researched via high-speed camera and volume of fluid (VOF) model at different injection pressure and back pressure. The results show that the primary breakup of drop can be exacerbated significantly and the broken length of drop can be shortened at higher injection pressure drop, and the greater impact on secondary breakup of drop will appear at the higher back pressure and it is helpful to improve atomization quality; with higher back pressure and injection pressure drop, the spray angle increases gradually to a constant value, but the increase of back pressure will have much smaller contribution to the angle gradient than the increase of injection pressure drop, it means that the influence of the former on spray angle is more significantly. The numerical simulation results of spray morphology and angle agree well with those of the experiment.

References:

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Last Update: 1900-01-01