| A feasible approach to obtain the bubble diameter homogeneity is using an air injector moving in reciprocating shift instead of the pitched-blade impeller used previously. This paper reports progress in the numerical simulations of movement and deformation of a single bubble in a reciprocally stirred liquid metal flow field. The volume-of fluid (VOF) method was used for tracking the interface between the bubble and the melt flow. A dynamic mesh method was used to predict the bubble-melt flow in a two-dimensional foaming tank. The influences of reciprocating frequency and bubble diameter on the behavior of bubble movement and deformation in the melt flow were discussed. Results show that the bubble movement trajectory and the behavior of bubble deformation is dependent on bubble diameter and reciprocating frequency, the oscillations in the bubble trajectory become more intensive with increasing bubble diameter and decreasing reciprocating frequency. |
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