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首页> 外文期刊>International Journal of Heat and Mass Transfer >Oblique impact of two successive droplets on a flat surface
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Oblique impact of two successive droplets on a flat surface

机译：两个连续液滴在平面上的倾斜冲击

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Highlights•Dynamics of two successive droplets obliquely impacting on a flat surface is investigated.•Effects of impact obliqueness and offsets between the two droplets are studied.•The intermixing between the two droplets is examined.AbstractUsing the lattice Boltzmann method, a numerical study was conducted to investigate the oblique impact of two successive droplets on a flat surface. The focus was placed on the effects of surface inclination, lateral/longitudinal offset, the impact dynamics of the two droplets and the subsequent dynamics of the combined droplet. The evolution of the topology, contact lines and spread factor of the two droplets under various conditions was compared and analyzed. It was found that, compared to single droplet impact, the impact of successive droplets shows quite different dynamics due to the involved coalescence process. The surface inclination causes asymmetric spreading of the droplets. The increase in surface inclination leads to faster downward spreading and reduced lateral spreading. The non-zero offset between the two droplets further enhances this asymmetry. Furthermore, the intermixing between the two droplets during the oblique impact was also examined. It was observed that the surface inclination changes the mass distribution of the combined droplet.
机译： 突出显示 • 研究了两个连续倾斜倾斜撞击到平面上的液滴的动力学。 • 碰撞倾斜和两个液滴之间的偏移的影响 • 检查了两个小滴之间的混合。 摘要 使用格子Boltzmann方法，进行了数值研究研究两个连续液滴在平面上的倾斜影响。重点放在表面倾斜度，横向/纵向偏移，两个液滴的冲击动力学以及组合液滴的后续动力学方面。比较和分析了两种液滴在不同条件下的拓扑，接触线和扩散因子的演变。已经发现，与单个液滴冲击相比，由于涉及的聚结过程，连续液滴的冲击显示出完全不同的动力学。表面倾斜导致液滴不对称散布。表面倾斜度的增加导致更快的向下扩展和减少的横向扩展。两个液滴之间的非零偏移进一步增强了这种不对称性。此外，还检查了倾斜冲击期间两个液滴之间的混合。观察到表面倾斜改变了组合液滴的质量分布。

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