|Table of Contents|

Investigation on unsteady characteristics of flow and heat transfer in cryogenic precooling pipe(PDF)

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

Issue:
2018年06期
Page:
53-56
Research Field:
研究与设计
Publishing date:

Info

Title:
Investigation on unsteady characteristics of flow and heat transfer in cryogenic precooling pipe
Author(s):
CHENG Xianghua1; XUE Huijian1;  LI Honggang1;  LI Yanzhong2; 3
1.Xi'an Aerospace Propulsion Test Technology Institute, Xi'an 710100, China; 2.School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China; 3.State Key Laboratory of Technologies in Space Cryogenic Propellant, Beijing 100028,
Keywords:
unsteady state;  circulation precooling;  void fraction;  filming boiling
PACS:
V434+.3-34
DOI:
-
Abstract:
The circulation precooling of cryogenic liquid rocket engine and pipeline involves complicate flow regimes transform and heat transfer process, which affects the precooling effect of the rocket engine and its pipeline distinctly.In order to accurately analyze the flow regimes transform and heat transfer mechanism in the precooling loop during the filling process of cryogenic medium, a one-dimensional mathematical model of fluid dynamic and heat transfer in homogeneous equilibrium state was established.Under the unsteady state, the distribution of fluid parameters in the pipeline of liquid hydrogen precooling cycle was analyzed by using the discretized method.The heat transfer law and its influence factors of cryogenic liquid filling were obtained.The numerical results provide a theoretical basis for studying the precooling performance and optimizing the adiabatic design of pipe.

References:

[1] 高芳,陈阳,张振鹏 低温液体推进剂充填管路的数值模拟[J].航空动力学报,2007,22(1):108-113.
[2] 程谋森,刘昆,张育林.液氢液氧火箭发动机预冷与启动过程数值模拟综述[J].推进技术,2002,23(3):177-181.
[3] 程谋森,刘昆,张育林.低温推进剂供应管路预冷充填瞬变流计算[J].推进技术,2000,21(5):38-41.
[4] 程向华,陈二峰,厉彦忠.低温液体火箭发动机自然循环预冷研究[J].火箭推进,2012,38(5):1-6.
CHENG X H,CHEN E F,LI Y Z.Investigation on unsteady model of flow and heat transfer for cryogenic precooling pipe[J].Journal of rocket propulsion, 2012, 38(5): 1-6.
[5] 李琦芬,陈国邦,谢雪梅,等.低温输液泵自然循环预冷模拟试验[J].推进技术,2005,26(2):167-173.
[6] 郑锡亮 低温推进剂火箭发动机循环预冷实验和分析方法研究[D].杭州:浙江大学,2003.
[7] 杨永强,刘站国,徐浩海.液氧煤油发动机低温组元两相充填过程研究[J].火箭推进,2006,32(2):11-15.
YANG Y Q, LIU Z G, XU H H.Research on two-phase filling process of cryogenic propellant for a LOX/kerosenc LRE[J].Journal of rocket propulsion, 2006, 32(2): 11-15.
[8] 张亮,林文胜,鲁雪生, 等.低温推进剂双管输送系统的循环预冷实验研究[J].推进技术,2004,25(1):51-53.
[9] 陈二锋, 厉彦忠, 程向华, 等.管路预冷的高速再淹没传热模型及数值研究[J].华中科技大学学报.2009, 37(2):104-107.
[10] 徐济鋆,沸腾传热和气液两相流[M].北京:原子能出版社,1993.
[11] 陶文铨,数值传热学[M].西安:西安交通大学出版社,2002.
[12] 任德鹏,丁鹏飞,夏新林,等,低温液体填充管路的数值计算[J].工程热物理学报,2004, 25(1):118-120.

Memo

Memo:
-
Last Update: 2018-12-25