Experimental studies on the geometrical characteristics determining the system behavior of surface tension autooscillations.
Experimental studies on the geometrical characteristics determining the system behavior of surface tension autooscillations.
复制标题
决定表面张力自振荡系统行为的几何特征的实验研究。
DOI：
10.1016/s0021-9797(03)00128-0
复制
发表时间：
2003
影响因子：
9.9
通讯作者：
D. Vollhardt
中科院分区：
文献类型：
--
作者：
O. Grigorieva;N. Kovalchuk;D. Grigoriev;D. Vollhardt
表面张力的自振荡是一种与Marangoni不稳定性相关的现象，该不稳定性通过水-空气界面下的表面活性剂液滴的溶解而周期性地产生和衰减。为了研究系统几何形状对自振荡发展和特性的影响，进行了详细的实验研究。有人发现，纵横比是一个额外的无量纲参数，决定了系统的行为等同于马兰戈尼数。研究了池直径、毛细管浸入深度和液滴半径对自振荡周期和振幅的影响。
Autooscillation of the surface tension is a phenomenon related to Marangoni instability periodically arising and fading by dissolution of a surfactant droplet under a water–air interface. A detailed experimental investigation was performed to clear up the influence of the system geometry on development and characteristics of autooscillations. It was found that the aspect ratio is an additional dimensionless parameter that determines the system behavior equally to the Marangoni number. The influence of the cell diameter, capillary immersion depth, and droplet radius on the autooscillation period and amplitude was studied as well.