Finite Element Simulation of Hydrogen Dispersion by the Analogy of the Boussinesq Approximation

Journal of Computational Science and Technology

Hisayoshi TSUKIKAWA²  Stephane Boris NDONG-MEFANE²  Osamu SAKURAGI²  Hiroshi KANAYAMA¹ 

[1] Department of Mechanical Engineering, Faculty of Engineering, Kyushu University;Department of Intelligent Machinery and Systems, Graduate School of Engineering, Kyushu University

关键词: Hydrogen;    Dispersion;    Finite Element Method;    Stabilization Method;   

DOI  :  10.1299/jcst.2.643

学科分类：地球科学(综合)

来源: Japan Academy

【 摘 要 】

References(7)Cited-By(5)Hydrogen is expected as new fuel instead of fossil fuel. It will be used as fuel of a fuel cell for which development is performed actively. But it is difficult to experiment the hydrogen dispersion in case of hydrogen leaks. Therefore clarifying the hydrogen dispersion with numerical analysis becomes important. Furthermore, hydrogen dispersion under various conditions can be clarified with numerical analysis, which is useful to use hydrogen safely. This paper deals with computer simulation of the hydrogen dispersion by a finite element method. The mathematical model of hydrogen dispersion is governed by the momentum equations, the continuity equation and the hydrogen mass conservation equation. The model presented here is a three-dimensional, incompressible, non-stationary model. This paper describes a finite element method with the stabilization technique for solving Navier-Stokes equations and the advection diffusion equation for hydrogen concentration like the Boussinesq approximation of thermal convection problems. Improved numerical results are also shown.

【 授权许可】

Unknown