気液二相流のために3次元Level Set法における質量保存性の改良(S25-2 気泡力学に関する基礎解析とその応用(2),S25 気泡力学に関する基礎解析とその応用)

概要

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Two numerical algorithms are introduced for the reinitialization procedure of the distance function in the level set method for gas-liquid two-phase flows. One algorithm is based on the reinitialization procedure with constraints proposed by Takahira et al.; the other is the adaptive version of the former algorithm. Both-algorithms are used to improve the mass conservation of two fluids. Numerical tests are performed for the three-dimensional merger of two rising bubbles to evaluate mass conservation for the present algorithms. It is shown that the present algorithms work very well even for a density ratio of the two fluids of 1:1000. It is also shown that the volume conservation (i.e., mass conservation) of bubbles is very good even after bubble merger.
一般社団法人日本機械学会の論文
2004-09-04