Influences of filling process on the thermal-mechanical behavior of composite overwrapped pressure vessel for hydrogen

• Published in: International journal of hydrogen energy Vol. 45; no. 43; pp. 23093 - 23102
• Main Authors: Jiang, Y., Wei, S.T., Xu, P.
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 03.09.2020
• Subjects: Composite overwrapped pressure vessel; Fluid-thermal-solid coupling; Temperature rise; Thermal-mechanical model; Temperature rise; Composite overwrapped pressure vessel; Fluid-thermal-solid coupling; Thermal-mechanical model
• ISSN: 0360-3199; 1879-3487
• DOI: 10.1016/j.ijhydene.2020.06.154

Temperature rise is an important issue during the fast filling of composite overwrapped pressure vessel for hydrogen. Due to different temperature and thermal expansion coefficients at different parts, thermal-mechanical coupling effects exist. In this work, a fluid-thermal-solid coupling analysis method is proposed for the thermal-mechanical behavior of composite overwrapped pressure vessel in the process of filling. Firstly, a computational fluid dynamics analysis is performed to study the temperature rise and compared with analytical solution. Then a finite element model is set up and validated. The temperature field from the computational fluid dynamics model is exported to the finite element model as boundary condition. By this method, the influences of filling rate, inlet location and geometry on the thermal-mechanical stress field are studied. The results of this work can provide guidance for the design of composite overwrapped pressure vessel and the optimization of filling process. •A fluid-thermal-solid coupling analysis method is proposed for COPV.•The influences of filling rate, inlet locations and geometry are studied.•The results of this work can provide guidance for the design of COPV.