Numerical studies on natural circulation precooling loop of cryogenic liquid rocket engine

作     者：Chen, Er-Feng Li, Yan-Zhong Cheng, Xiang-Hua 

作者机构：School of Energy and Power Engineering Xi'an Jiaotong University Xi'an 710049 China State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University Xi'an 710049 China 

出 版 物：《Hangkong Dongli Xuebao/Journal of Aerospace Power》 (Hangkong Dongli Xuebao)

年 卷 期：2009年第24卷第3期

页      面：698-704页

核心收录：

基　　金：国家教育部高等学校博士学科点专项科研基金 国家教育部长江学者与创新团队发展计划 

主　　题：Rockets 

摘      要：One set of one-dimensional unsteady homogenous mathematic models for flow and heat process of natural circulation precooling loop of cryogenic liquid rocket engine was established, whilst both inverted annular model and dispersed model were introduced for the prediction of filming boiling region. The results indicate the unstable characteristics of circulation flow rate in precooling process is caused by the unstable characteristics of natural circulation driving force, that is, the heat flux transferred to the cryogenic liquid from the natural circulation precooling loop. Moreover, about 80% of wall temperature drop takes place in filming boiling region, and the inverted temperature distribution law of the return pipe is well interpreted by introducing the two filming boiling models mentioned above.