牛乳充填過程への流入速度条件の効果に関する数値解析

抄録

In this study, in order to realize the high efficiency of the filling process of milk without large-scale splashes of milk, we focus on the effect of the in-flow condition at the nozzle where the milk is injected on the filling process. We assume two in-flow conditions which are flat and sine-curve velocity profiles and computationally reproduce the flow dynamics of milk filling process for two in-flow conditions. In the case of the flat profile, much air is entrained in the milk and many bubbles are generated in the carton. Accordingly, it is shown that the disturbances of the free-surface shape attributable to bubbles bursting at the gas-liquid interface became larger than that for the sine-curve velocity profile.