分散性混相流のハイブリッド数値計算手法の開発

界面追跡法と流体粒子追跡法の統合

抄録

A hybrid numerical method for solving dispersed multi-phase flows was developed. The method is the integration of an interface tracking method (ITM) based on a volume tracking scheme, a new fluid particle tracking method (PTM) based on a one field formulation (OFPT), a PTM based on the jump condition (BCPT) and a PTM based on volume averaging (VAPT). This hybrid integration made it possible to cover a wide range of spatial resolution within the context of continuum dynamics. The validity of OFPT was confirmed through comparisons of predicted bubble wake velocity distributions between OFPT and ITM. It was also verified through a simulation of two inline air bubbles and that of air-water bubbly flow in a duct that OFPT can seamlessly connect to ITM.