Abstract
Hydrogen is expected as new fuel instead of fossil fuel. Many scientists are studying characteristic features of hydrogen. But it is difficult to experiment the hydrogen dispersion in case of hydrogen leaks, because hydrogen has the properties that energy for ignition is lower and probability of occurrence of detonation is higher than those of hydrocarbon fuel. Therefore clarifying the hydrogen dispersion with numerical analysis becomes important. This paper describes a finite element method for solving Navier-Stokes equations and the advection-diffusion equation. Numerical results are also shown for a simple model.
