Simulation on chill-down behavior and induced thermal stress of a cryogenic tank during LN2 filling

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

2020-11-25

10.1016/j.applthermaleng.2020.115876

APPLIED THERMAL ENGINEERING   影响因子和分区

1359-4311

In order to illustrate the relevance between the chill-down and the thermal stress characteristics of cryogenic tanks during filling, a unidirectional thermal-structural numerical method is introduced in this paper. Aiming at the filling process of a LN tank, the flow field, temperature distribution and the cooling behavior of the tank wall are calculated in detail through a two-dimensional CFD model. Based on the temperature data of CFD calculations, time-ordered static structural analyses of the thermal deformation and thermal stress of the tank wall were conducted by a finite element model. Results show that, the degree of the thermal deformation is positively related to the cooling degree of the tank. The thermal stress concentrated area does not depend on the distribution of the thermal deformation, but is consistent with the position of the liquid level where exists the remarkable temperature gradient. For the bottom filling process of the target tank, the thermal stress is most serious at the beginning filling stage and the maximum appears at the tank bottom. By comparing with the experimental data, this numerical method is verified to be a useful tool for the evaluation, design, and safe operation of cryogenic tanks.

Chill down Cryogenic tank LN2 filling Numerical study Thermal stress

SCI ; EI

英语

其他

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

Thermodynamics ; Energy & Fuels ; Engineering ; Mechanics

Thermodynamics ; Energy & Fuels ; Engineering, Mechanical ; Mechanics

WOS:000592635100017

PERGAMON-ELSEVIER SCIENCE LTD

20203509114778

Computational fluid dynamics ; Cryogenics ; Tanks (containers) ; Numerical methods ; Deformation ; Thermal stress

Tanks:619.2 ; Cryogenics:644.4 ; Materials Handling Methods:691.2 ; Computer Applications:723.5 ; Numerical Methods:921.6 ; Mechanics:931.1 ; Physical Properties of Gases, Liquids and Solids:931.2

ENGINEERING

2-s2.0-85089897003

Scopus

1.Xi'an Jiaotong University,Institute of Refrigeration and Cryogenic Engineering,Xi'an,710049,China
2.Southern University of Science and Technology,Department of Materials Science and Engineering,Shenzhen,518055,China

Ma，Yuan,Zhu，Kang,Li，Yanzhong,et al. Simulation on chill-down behavior and induced thermal stress of a cryogenic tank during LN2 filling[J]. APPLIED THERMAL ENGINEERING,2020,181.

Ma，Yuan,Zhu，Kang,Li，Yanzhong,&Xie，Fushou.(2020).Simulation on chill-down behavior and induced thermal stress of a cryogenic tank during LN2 filling.APPLIED THERMAL ENGINEERING,181.

Ma，Yuan,et al."Simulation on chill-down behavior and induced thermal stress of a cryogenic tank during LN2 filling".APPLIED THERMAL ENGINEERING 181(2020).