Abstract
This study is concerned with extension of numerical code called CRIMSON (Civa Refined Multiphase SimulatiON), which has been developed to evaluate multi-phase flow behaviors based on the recent CFD (computational fluid dynamics) techniques. The CRIMSON employs a finite-volume method combined with the high order interpolation scheme, CIVA (cubic-interpolation with area/volume coordinates). The CRIMSON solves gas-liquid two phases by a unified scheme of CUP (combined unified procedure). The conventional CIVA method has a problem of loosing interface sharpness in long-term calculation. In this study, the problem was solved by introducing the idea of the phase field method. For numerical analyzing splashing fluid, we also introduced the SPH particle method to the CRIMSON.
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