کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1270939 | 1497547 | 2012 | 6 صفحه PDF | دانلود رایگان |
There will be significant temperature rise within hydrogen vehicle cylinder during the fast filling process. The temperature rise should be controlled under the temperature limit (85 °C) of the structure material (set by ISO/TS 15869), because it may lead to the failure of the structure. In this paper, a 2-dimensional axisymmetric computational fluid dynamics (CFD) model for fast filling of 70 MPa hydrogen vehicle cylinder is presented. The numerical simulations are based on the modified standard k − ɛ turbulence model. In addition, both the equation of state for hydrogen gas and the thermodynamic properties are calculated by National Institute of Standards and Technology (NIST) database: REFPROP 7.0. The thermodynamic responses of fast filling with different pressure-rise patterns and filling times within type III cylinder have been analyzed in detail.
► A CFD model for predicting filling process of 70 MPa cylinder is presented.
► Filling processes with different pressure-rise patterns are analyzed.
► Remarkable temperature gradient is found in interlaminar area between layers.
Journal: International Journal of Hydrogen Energy - Volume 37, Issue 22, November 2012, Pages 17517–17522