Oscillatory Marangoni convection around the air bubble in a vertical surfactant stratification

被引：20

作者：

Kostarev, K

Zuev, A

Viviani, A

机构：

[1] RAS, UB, Inst Continuous Media Mech, Perm 614013, Russia

[2] Univ Naples 2, I-81031 Aversa, Italy

来源：

COMPTES RENDUS MECANIQUE | 2004年 / 332卷 / 01期

基金：

俄罗斯基础研究基金会;

关键词：

fluid mechanics; bubbles; miscible liquids; Marangoni convection; solutocapillary flow;

D O I：

10.1016/j.crme.2003.10.014

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The solutocapillary Marangoni convection around a gas bubble in the inhomogeneous binary mixture of miscible fluids with a vertical surfactant concentration gradient was studied experimentally. A new phenomenon, the oscillatory instability of the surfactant mass transfer, near the bubble boundary, was detected and investigated. The interpretation of this effect as an interaction between the surfactant adsorption at the bubble free surface and solutocapillary and buoyancy convective mechanisms is proposed. The experimental data on oscillation period in relation to bubble dimensions, time, liquid layer thickness, physico-chemical fluid parameters and concentration gradients are presented and discussed. (C) 2003 Academie des sciences. Published by Elsevier SAS. All rights reserved.

引用

页码：1 / 7

页数：7