论文和技术资料

Modeling and simulation softwares are very useful tools when we have to analyse and understand the different phenomena occurring during metal foams processing, because several simultaneous physical mechanisms have to be accounted for.

In this work we use Comsol Multiphysics 4.2 to model a spherical hydrogen gas bubble expanding in aluminium liquid, initially at rest. The aim of the present work is to improve a computational model developed early under simpler conditions and take mass diffusion into account. Surface tension effects on the gas-liquid interface are also considered. The equations of the model are solved on a three-dimensional fixed mesh and, in order to capture the interface between the two fluids, we use the level set method available in Comsol Multiphysics.