Numerical investigation on chill-down and thermal stress characteristics of a LH2 tank during ground filling

Ma, Yuan1; Zhu, Kang2; Li, Yanzhong1; Xie, Fushou1

2020-09-21

10.1016/j.ijhydene.2020.06.056

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY   影响因子和分区

0360-3199

1879-3487

To investigate the thermal and structural characteristics of a flight-scale LH2 tank during ground fillings, a CFD model and a structural analysis model are established to simulated the chill-down process and the induced thermal stress behavior of the tank, respectively. Results show that, at the early stage of filling, a severe temperature gradient appears at the liquid level, leading to a remarkable local concentration of thermal stress, while the maximal thermal deformation is at the outlet region. After the local wall is chilled down sufficiently, the temperature jump at the interface vanishes as well as the local thermal stress, while the maximal thermal deformation is located at the middle height of tank. The thermal stress is most serious at the beginning stage of filling and the maximum appears at the tank bottom. Moreover, the non-uniformity of the temperature distribution and the average thermal stress level within the tank wall both increase with the filling rate. At a filling rate of 7.5 kg.s(-1), the maximal thermal stress and thermal deformation of the target tank are more than 70 MPa and 30 mm. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

Aluminum alloy tank LH2 filling Chill down Thermal stress

SCI ; EI

英语

其他

National Natural Science Foundation of China[51906194][51876153] ; China Postdoctoral Science Foundation[2019M663701]

Chemistry ; Electrochemistry ; Energy & Fuels

Chemistry, Physical ; Electrochemistry ; Energy & Fuels

WOS:000569369600004

PERGAMON-ELSEVIER SCIENCE LTD

20203309043856

Aluminum alloys ; Tanks (containers) ; Deformation ; Thermal stress

Aluminum Alloys:541.2 ; Tanks:619.2 ; Materials Handling Methods:691.2 ; Physical Properties of Gases, Liquids and Solids:931.2

ENGINEERING

Web of Science

1.Xi An Jiao Tong Univ, Inst Refrigerat & Cryogen Engn, Xian 710049, Peoples R China
2.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China

Ma, Yuan,Zhu, Kang,Li, Yanzhong,et al. Numerical investigation on chill-down and thermal stress characteristics of a LH2 tank during ground filling[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2020,45(46):25344-25356.

Ma, Yuan,Zhu, Kang,Li, Yanzhong,&Xie, Fushou.(2020).Numerical investigation on chill-down and thermal stress characteristics of a LH2 tank during ground filling.INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,45(46),25344-25356.

Ma, Yuan,et al."Numerical investigation on chill-down and thermal stress characteristics of a LH2 tank during ground filling".INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 45.46(2020):25344-25356.