|Table of Contents|

Study on abnormal pressure pulsation of gas path in a liquid rocket engine(PDF)

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

Issue:
2022年05期
Page:
69-75
Research Field:
目次
Publishing date:

Info

Title:
Study on abnormal pressure pulsation of gas path in a liquid rocket engine
Author(s):
LIU Hongzhen;  TIAN Yuan
(Beijing Aerospace Propulsion Institute, Beijing 100076, China)
Keywords:
three-branched pipe pressure jump flow instability spiral flow liquid rocket engine
PACS:
V434
DOI:
-
Abstract:
In view of the abnormal pressure pulsation in the gas path of a liquid rocket engine, two flow patterns of spiral flow and bifurcation flow were obtained by numerical simulation, and an explanation for the flow instability caused by the mutual switching of two flow patterns was proposed.The large spiral vortex in the three-branched gas pipe and the spiral flow in the hydrogen/oxygen gas pipe will cause the flow resistance to increase, resulting in the local pressure jump in the gas path.The phenomenon of pressure jump during the hot fire test was reproduced by the numerical simulation and the gas flow test, and the flow stability boundary of the gas path was obtained.The hot test results show that when the split ratio is greater than 0.5, the probability of abnormal pressure jump in the gas path increases obviously.Numerical simulation and gas flow test show that when the split ratio is in the range of 0.5-0.65 and 0.48-0.6 respectively, there will be mutual switching between the two flow patterns and abnormal pressure jump will occur.The abnormal pressure jump of gas path has nothing to do with the combustion process and the combustion chamber pressure, but only with the split ratio.Setting a cross baffle in the hydrogen/oxygen gas pipe cannot inhibit the pressure jump in the gas path.According to the gas flow test and the hot fire test, the perforated device can effectively restrain the pressure jump phenomenon in the gas path.

References:

[1] 张小平,李春红,马冬英. 液氧/甲烷发动机动力循环方式研究[J].火箭推进,2009(4):14-20,43.
ZHANG X P,LI C H,MA D Y. Study on the LOX/methane rocket engine power cycles[J].Journal of Rocket Propulsion,2009(4):14-20,43.
[2] BAJURA R A. A model for flow distribution in manifolds[J].Journal of Engineering for Gas Turbines & Power,1971,93(1):7.
[3] BAJURA R A,JONES E H J. Flow distribution manifolds[J].ASME Transactions Journal of Fluids Engineering,1976,98(4):654-665.
[4] HORII K,MURATA T,TAKARADA M,et al. A study of spiral flow(I):Phenomenon in a cylindrical pipe[J].Transactions of the Japan Society for Aeronautical and Space Sciences,1985,28(81):123-131.
[5] HORII K,MURATA T,TAKARADA M,et al. A study of spiral flow(II):Vortex phenomenon in a specially shaped bend[EB/OL].https://www.researchgate.net/publication/291150486_STUDY_OF_SPIRAL_FLOW_PART_2_VORTEX_PHENOMENA_IN_A_SPECIALLY_SHAPED_BEND,1988.
[6] 熊鳌魁,魏庆鼎. 一种强螺旋流现象的实验研究[J].流体力学实验与测量,1999,13(4):8-13.
[7] 帅石金,刘永长. 螺旋流三分支管多维流场的测量与数值模拟[J].内燃机学报,1999,17(3):277-280.
[8] 翟银平,王树立. 90°弯管管道螺旋流的数值模拟[J].常州大学学报(自然科学版),2011,23(2):36-39.
[9] 王树立,饶永超,韩永嘉,等. 螺旋流发生装置的对比分析研究[J].流体机械,2013,41(2):30-38.
[10] 张琳,钱红卫,宣益民,等. 自转螺旋扭带管内三维流动与传热数值模拟[J].化工学报,2005,56(9):1633-1638.
[11] 王晓飞. 管内螺旋流的实验研究与分析[D].武汉:武汉理工大学,2004.
[12] 孙善秀,叶超,范稀木,等. 复杂管路内压力跳变的螺旋流解释[J].导弹与航天运载技术,2019(2):31-34.
[13] 王鑫宝,厉彦忠,王磊,等. 液氧输送系统压力异常下降成因分析与数值研究[J].低温工程,2018(3):52-57.
[14] XIE F S,XIA S Q,CHEN E F,et al. Numerical investigation on instability flow behaviors of liquid oxygen in a feeding pipeline with a five-way spherical cavity[J].Energies,2020,13(4):926.
[15] XIE F S,LI Y Z,WANG X B,et al. Experimental investigation of abnormal pressure drop in branch feedlines with a five-port spherical cavity in liquid oxygen engines[J].Cryogenics,2019,104:102994.
[16] 路明,袁吉栋,王海峰. 螺旋流技术在水科学领域中的应用研究[J].科技情报开发与经济,2007(9):142-145.
[17] 靳文宇,李永业,张乐元,等. 螺旋流研究进展及工业应用[J].山西水利,2009(1):66-67.
[18] 彭龙生,张羽,任万森,等. 螺旋流输移匀粒的能耗[J].太原理工大学学报,1998,29(6):564-567.
[19] 延耀兴,张杰,毛惠惠. 螺旋流消能装置消能效果试验研究[J].科技情报开发与经济,2005(23):172-174.
[20] 李国威,孙冠男,孔繁利,等. 螺旋流混合器内部流动及换热分析[J].水资源与水工程学报,2012,23(1):86-88.
[21] 孙德,李培昌,冯飞,等. 低温氢气混合器技术研究[J].导弹与航天运载技术,2019(3):49-53.

Memo

Memo:
-
Last Update: 1900-01-01