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首页> 外文期刊>European Journal of Mechanics. B, Fluids >Wetting prevention by thermal Marangoni effect. Experimental and numerical simulation
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Wetting prevention by thermal Marangoni effect. Experimental and numerical simulation

机译:通过热马兰戈尼效应防止润湿。实验与数值模拟

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摘要

The behaviour of small liquid drops, hanging from a circular disk and approaching a flat wall at a different temperature is studied experimentally and numerically. If the pendant drop and the solid surface are at the same temperature and If the liquid wets the solid, the drop spreads over the surface forming a liquid bridge in times of the order of milliseconds. If the upper disk is heated and/or the solid surface is cooled, then the drop does not wet the wall, even if pressed against the surface, but it is deformed in a completely reversible way, similarly to an elastic material (e.g. like a rubber ballon).
机译:实验和数值研究了小水滴的行为,这些小水滴悬在圆盘上并在不同的温度下接近平坦的壁。如果悬垂液滴和固体表面处于相同的温度,并且如果液体润湿固体,则液滴会散布在整个表面上,形成液桥的时间约为毫秒。如果上盘被加热和/或固态表面被冷却,则即使压在表面上,液滴也不会润湿壁,而是以完全可逆的方式变形,类似于弹性材料(例如橡胶气球)。

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