The start-up of natural convection during copper electrolysis in the presence of an opposing Lorentz force

被引：28

作者：

Yang, Xuegeng ^{[1
]}

Eckert, Kerstin ^{[2
]}

Seidel, Kirsten ^{[2
]}

Uhlemann, Margitta ^{[1
]}

机构：

[1] Leibniz Inst Solid State & Mat Res, D-01171 Dresden, Germany

[2] Tech Univ Dresden, Inst Aerosp Engn, D-01062 Dresden, Germany

来源：

ELECTROCHIMICA ACTA | 2008年 / 54卷 / 02期

关键词：

Copper electrolysis; Lorentz force; MHD flow; Natural convection; Scaling analysis;

D O I：

10.1016/j.electacta.2008.07.074

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The start-up of natural convection in an inhomogeneous magnetic field was studied in a OAM CuSO(4)solution between vertical electrodes. A Mach-Zehnder interferometer was used for the measurements of the concentration while the velocity field was determined by particle image velocimetry (PIV). The main phenomenon reported is the growth of a bubble-like zone of less-concentrated solution at the bottom of the cathode. This zone rises along the cathode if buoyancy is sufficiently strong to compete with the opposing Lorentz force. The results are discussed in terms of a scaling analysis. (c) 2008 Elsevier Ltd. All rights reserved.

引用

页码：352 / 359

页数：8

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