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首页> 外文期刊>International Journal of Heat and Mass Transfer >Interactions between molten metal droplets impinging on a solid surface
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Interactions between molten metal droplets impinging on a solid surface

机译：撞击在固体表面上的熔融金属小滴之间的相互作用

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We photographed molten tin droplets (2.2 mm diameter) landing off-center on a circular splat formed by the impact and solidification of another, identical drop. Final splat shapes were sensitive to the spacing between droplet centers, which was varied from 1.0 to 5.0 mm. We used a three-dimensional model of spreading and solidification to simulate interactions between droplets. The model applied a fixed-grid Eulerian control volume method to solve the fluid dynamics and energy conservation equations. A volume-of-fluid algorithm was used to track free surface deformation. Predictions of droplet shapes during impact from the model agreed well with photographs. By following temperature variations at different points on the surface of the first splat we could identify locations where remelting occurred and the splats fused together. Splat shapes observed in experiments with large tin droplets qualitatively resembled those obtained by plasma-spraying nickel powders on a steel surface.
机译：我们拍摄了熔化的锡滴（直径2.2毫米）偏心落在由另一个相同滴的撞击和凝固形成的圆形飞溅上的偏心现象。最终的飞溅形状对液滴中心之间的间距敏感，间距从1.0到5.0 mm不等。我们使用了扩散和固化的三维模型来模拟液滴之间的相互作用。该模型应用了固定网格欧拉控制体积法来求解流体动力学和能量守恒方程。流体体积算法用于跟踪自由表面变形。模型对撞击过程中液滴形状的预测与照片非常吻合。通过跟踪第一个splat表面不同点的温度变化，我们可以确定发生重熔和splats融合在一起的位置。在实验中观察到的带有大锡滴的Splat形状在质量上类似于通过在钢表面上等离子喷涂镍粉而获得的形状。

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