格子ガスオートマトン法による二成分流体の凝集・分離の数値計算

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  • Numerical Simulations of Separation and Mixing of Two-Components Fluids by Lattice Gas Automata Method.
  • コウシ ガスオートマトンホウ ニ ヨル 2セイブン リュウタイ ノ ギョウシュウ ブンリ ノ スウチ ケイサン

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Two-components fluids have played an important role in a variety of industrial devices. In particular, it is very important to describe the interactions of gas and liquid at the interfaces of various flow patterns. Such behavior used to be solved numerically by a set of finite difference equations. However, numerical simulation of interfacial motion in a flow is still incomplete in many cases. The cellular automaton method is expected to be an effective numerical technique for simulating such a complex fluid motion as separation and mixing. The cellular automata method follows the mesoscopic particle dynamics with simple rules. These enable us to realize discrete molecular dynamics on the computers with a large freedom. It was demonstrated that an automaton solution simulated the phase separation and mixing at its interface. After evaluation of the velocity distribution of the averaged solution, it can be concluded that the lattice gas automata method is useful to simulate two-component fluids flow.

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