Study on break of thermal stratification in container targeted to thermodynamic vent system for future spacecraft

27th International Cryogenics Engineering Conference and International Cryogenic Materials Conference 2018

Imai, Ryoji^1 ; Kawanami, Osamu^2 ; Umemura, Yutaka^3 ; Himeno, Takehiro^4

Course of Aerospace System Engineering, Graduate School of Engineering, Muroran Institute of Technology, 27-1, Mizumoto-cho, Muroran, Hokkaido

050-8585, Japan^1

Department of Mechanical Engineering, Graduate School of Engineering, University of Hyogo, 2167 Syosya, Himeji

271-2201, Japan^2

Space Technology Directorate Research Unit III, Aerospace Research and Development Directorate, JAXA, 2-1-1, Sengen, Ibaraki, Tsukuba

305-8505, Japan^3

Department of Aeronautics and Astronautics, University of Tokyo, 7-3-1, Hongo, Bunkyo, Tokyo

169-8555, Japan^4

关键词: Change of temperatures;    Cryogenic propellant;    Future spacecraft;    Numerical results;    Space exploration mission;    Thermal management systems;    Thermodynamic vent systems;    Transfer vehicles;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/502/1/012082/pdf
DOI  :  10.1088/1757-899X/502/1/012082

来源: IOP

【 摘 要 】

In the future space exploration mission, transfer vehicle using cryogenic propellant and oxidizer will be likely operated. Thermal management systems, such as thermal insulation, pressure control, and reduction of boil off gas must be installed on transfer vehicle since cryogenic fluid has high volatile characteristics. Final target of this study is the development of thermodynamic vent system (TVS) utilizing jet mixing. Numerical simulation and ground based experiment for thermal and fluid behaviours in tank partially filled with liquid nitrogen were conducted. Thermal stratification in tank was formed by creating heat input from side wall, and change of temperature field and break of thermal stratification by jet mixing were investigated. Numerical results were evaluated by comparing with experimental results.Published under licence by IOP Publishing Ltd.