Lorenceau Elise, Clanet Christophe, Quéré David
Laboratoire de Physique de la Matière Condensée, UMR 7125 du CNRS, Collège de France, 75231 Paris Cedex 05.
J Colloid Interface Sci. 2004 Nov 1;279(1):192-7. doi: 10.1016/j.jcis.2004.06.054.
We study experimentally the dynamics of drops impacting horizontal fibers and characterize the ability of these objects to capture the drops. We first show that a drop larger than a critical radius cannot be trapped by a fiber whatever its velocity. We determine this critical size as a function of the fiber radius. Then we show that for smaller drops, different situations can occur: at a low impact velocity, the drop is entirely captured by the fiber, whereas some liquid is ejected when arriving faster. We quantify the threshold velocity of capture.
我们通过实验研究了液滴撞击水平纤维的动力学过程,并描述了这些物体捕获液滴的能力。我们首先表明,大于临界半径的液滴无论其速度如何都不能被纤维捕获。我们将这个临界尺寸确定为纤维半径的函数。然后我们表明,对于较小的液滴,可能会出现不同的情况:在低撞击速度下,液滴被纤维完全捕获,而当到达速度更快时,会有一些液体被喷出。我们对捕获的临界速度进行了量化。