Abstract
A Coupled Level Set and Volume Of Fluid (CLSVOF) method is presented in this article for simulating the multi-bubble rising problem. This method can accurately conserve mass and capture gas/liquid moving interface to understated bubbles’ evolution in detail. In addition to capturing bubbles’ evolution, the present CLSVOF method is also combined with the projection method of flow field solver, which can provide two-phase flow field solutions. Comparisons with reference solutions have also been carried out for the single-bubble rising case. It is shown that the results obtained using the present method agree well with reference solutions, even where there are fewer grid points. The mass conservation performance is compared with the numerical result of the level set method. The present two-phase flow model is further adopted to study the high density ratio on bubbles’ dynamic and kinematic characteristics.
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