Influences of filling process on the thermal-mechanical behavior of composite overwrapped pressure vessel for hydrogen |
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| Affiliation: | 1. Pacific Northwest National Laboratory, Richland, WA 99354, USA;2. Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL, 60439, USA;1. School of Engineering, Griffith University, Gold Coast Campus, Qld 4222, Australia;2. Department of Mechanical Engineering, Saga University, 1 Honjo-machi, Saga 840-8502, Japan;1. College of Aerospace Engineering, Shenyang Aerospace University (SAU), Shenyang, China;2. College of Material Science and Engineering, Shenyang Aerospace University (SAU), Shenyang, China |
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| Abstract: | 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. |
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| Keywords: | Temperature rise Composite overwrapped pressure vessel Fluid-thermal-solid coupling Thermal-mechanical model |
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