Physica D: Nonlinear Phenomena ( IF 4 ) Pub Date : 2020-10-16 , DOI: 10.1016/j.physd.2020.132765 Joël De Coninck , Juan Carlos Fernández-Toledano , François Dunlop , Thierry Huillet , Alvin Sodji
For a pendent drop whose contact line is a circle of radius , we derive the Furmidge-like relation at first order in the Bond number, where and are the contact angles at the back (uphill) and at the front (downhill), is the mass of the drop and the surface tension of the liquid. The Bond (or Eötvös) number is taken as . The tilt angle may increase from (sessile drop) to (drop pinned on vertical wall) to (drop pendent from ceiling). The focus will be on pendent drops with and , while is also included for comparison. The drop profile is computed exactly, in the same approximation. Results are compared with Surface Evolver simulations, showing good agreement up to about , corresponding for example to hemispherical water droplets of volume up to about L. An explicit formula for each contact angle and is also given and compared with the almost exact Surface Evolver values.
中文翻译:
倾斜表面下悬垂液滴的形状
对于垂线,其接触线是半径的圆 ,我们得出类似Furmidge的关系 以债券编号的第一顺序,其中 和 是后面(上坡)和前面(下坡)的接触角, 是下降的质量, 液体的表面张力。债券号(或Eötvös)取为。倾斜角度 可能从 (无滴)到 (将水滴固定在垂直墙上) (从天花板垂下)。重点将放在 和 ,而 还包括用于比较。下降轮廓以相同的近似值精确计算。将结果与Surface Evolver模拟进行了比较,显示出良好的一致性,直到大约,例如对应于体积最大约为 L.每个接触角的明确公式 和 还给出并与几乎精确的Surface Evolver值进行比较。