We have performed two- and three-dimensional phase field simulations using the lattice-Boltzmann method of liquid drops rising through a continuous phase liquid under the influence of buoyancy. In their upward motion, the drops encounter a knife that is placed with the purpose of slicing the drops in two. A range of scenarios has been observed when the drop hits the knife and it has been investigated how the type of scenario depends on the dimensionless parameters governing the motion and slicing of the drop: the Eötvös number, the Morton number, and the ratio of the droplet size and the width of the knife. We studied symmetric and asymmetric encounters between drop and knife and kept track of the size distribution of the resulting fragments.

中文翻译：

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液滴切片的格子玻尔兹曼相场模拟

我们使用格子-玻尔兹曼方法进行了二维和三维相场模拟，液滴在浮力的影响下通过连续相液体上升。在它们的向上运动中，液滴遇到一把刀，刀的放置目的是将液滴切成两半。当液滴撞击刀时，观察到了一系列场景，并研究了场景类型如何取决于控制液滴运动和切片的无量纲参数：Eötvös 数、Morton 数和液滴大小和刀的宽度。我们研究了水滴和刀子之间的对称和不对称相遇，并跟踪生成的碎片的尺寸分布。