The lattice gas automata method was used to simulate fluid motion. In two-dimensional simulation, it was shown that the 9-velocity ILG model was effective for the numerical simulation of the immiscible two component flow including energy transport. However, three-dimensional simulation was requested for the actual engineering application. In the present paper, the three-dimensional ILG model was proposed based on the 9-velocity model. The proposed model was applied to the numerical simulation of droplet atomization. It was clarified that the three-dimensional ILG model not only satisfied Laplace's formula but also delt with the compex behavior of two-component surface as well as the 9-velocity ILG model.
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