Numerical Analysis of the Temperature Rise at Fast Filling of Hydrogen Storage Cylinder Based on Fluid-Thermal-Solid Coupling

Abstract

Taking the type III hydrogen storage cylinder of a hydrogen energy detection institution as the research object, the fluid-thermal-solid coupling calculation and analysis were carried out on ANSYS Workbench, fully considering the differences among different material layers and the inhomogeneity of temperature load distribution. The results showed that the maximum temperature of the cylinder and the maximum stress on the carbon fiber winding layer both appeared at the connection between the end head and the cylinder when the filling was finished. The thermal stress caused by temperature load is small compared to the mechanical stress caused by internal pressure. The difference between the values of mechanical stress and coupling stress is not significant, and the mechanical stress on the carbon fiber winding layer was slightly smaller than the coupling stress. Due to the large expansion coefficient of the aluminum liner, the compressive thermal stress caused by the temperature load offset a part of the mechanical stress, making the coupling stress less than the mechanical stress.