抄録
Cahn-Hilliard (CH) method is one of the interface-tracking method for two-phase flows. An advantage for CH method is that it can simulate complex behavior of interface relatively easily. On the other hand, the simulation for two-phase flows including fine disperse phase requires more accuracy of interface-tracking. The accuracy of interface-tracking due to diffusion by CH equation should be improved. Hence, in the present paper, the characteristics of diffusion of order function by CH equation is investigated. We focus on the mobility which means the anisotropic characteristic of diffusion in CH equation, and evaluated accuracy of interface-tracking for 2D and 3D single rising bubble.
