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Experimental study on atomization characteristic of liquid jet in vacuum environment(PDF)

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

Issue:
2010年05期
Page:
27-30
Research Field:
研究与设计
Publishing date:

Info

Title:
Experimental study on atomization characteristic of liquid jet in vacuum environment
Author(s):
LI Long-fei;  CHI Bao-hua;  YANG Wei-dong;  HONG Liu
Xi’an Aerospace Propulsion Institute, Xi’an 710100, China
Keywords:
vacuum environment;  space rocket engine;  atomization characteristic
PACS:
V434.3-34
DOI:
-
Abstract:
In order to study the atomization characteristic and its influence on liquid jet in vacuum, an experimental system was built, in which water was used instead of the liquid propellant, the initial vacuum degree in the vacuum cabin was lower than 10 Pa, and the high-speed dynamic analysis system was adopted to measure the atomization. The experimental results show that the flashing of the liquid jet in vacuum environment is one of the main factors for atomization of liquid jet, the icing phenomenon occurs on the edge of injector as the jet velocity is low, the length to break up increases and the spray angle decreases with the increase of the liquid Reynolds number in vacuum, and while the jet velocity is same, the larger the diameter of nozzle orifice is, the longer the length to break up will be and the more the spray angle will become.

References:

[1]NASA. Ice in space: an experimental and theoretical investigation with application to comets, NASA 19760016-029[R]. USA: NASA, 1976. [2]KOFSKY I L, RALL D L, MARIS M A, et al. Pheno-menology of a water venting in low earth orbit[J]. Acta Astronautica 1992, 26(5): 325-347. [3]FOUCAUD R. Experimental study of the ariane 5 attitude control system (SCA) passivation, AIAA 2001-2763[R]. USA: AIAA, 2001. [4]刘伟民, 毕勤成, 刘璐, 等. 低压闪蒸液滴形态和温度变化的研究[J]. 工程热物理学报, 2007, 28(6): 957-960. [5]刘昌波, 张涛, 李福云. N2O4真空排放实验研[J]. 火箭推进, 2006, 32(6): 1-5. [6]MUNTZ E P, ORME M. Characteristics, control, and uses of liquid streams in space, AIAA1987-756[R]. USA:

Memo

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Last Update: 1900-01-01