Numerical and experimental investigation of two-phase flow in an electrochemical cell

被引:68
作者
Aldas, Kemal [2 ]
Pehlivanoglu, Nur [2 ]
Mat, Mahmut D. [1 ]
机构
[1] Nigde Univ, Dept Mech Engn, TR-51100 Nigde, Turkey
[2] Aksaray Univ, Dept Mech Engn, Aksaray, Turkey
关键词
water electrolysis; two-phase flow; void fraction;
D O I
10.1016/j.ijhydene.2008.04.047
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
in this study, a two-phase mathematical model is adapted to study void fraction distribution, flow field and characteristics of electrolysis process. The model involves transport equations for both liquid and gaseous phases. An experimental set-up is established to collect data to validate and improve the mathematical model. The void fraction is determined from measurement of resistivity changes in the system due to the presence of bubbles. it is observed that there is a good agreement between the numerical results and the experimental data. (C) 2008 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:3668 / 3675
页数:8
相关论文
共 18 条
[1]   An experimental investigation of bubble-induced free convection in a small electrochemical cell [J].
Boissonneau, P ;
Byrne, P .
JOURNAL OF APPLIED ELECTROCHEMISTRY, 2000, 30 (07) :767-775
[2]   Modelling the two-phase flow and current distribution along a vertical gas-evolving electrode [J].
Dahlkild, AA .
JOURNAL OF FLUID MECHANICS, 2001, 428 :249-272
[3]   The bubble coverage of gas-evolving electrodes in a flowing electrolyte [J].
Eigeldinger, J ;
Vogt, H .
ELECTROCHIMICA ACTA, 2000, 45 (27) :4449-4456
[4]   DRAG COEFFICIENT AND RELATIVE VELOCITY IN BUBBLY, DROPLET OR PARTICULATE FLOWS [J].
ISHII, M ;
ZUBER, N .
AICHE JOURNAL, 1979, 25 (05) :843-855
[5]   BUBBLE BEHAVIOR DURING OXYGEN AND HYDROGEN EVOLUTION AT TRANSPARENT ELECTRODES IN KOH SOLUTION [J].
JANSSEN, LJJ ;
SILLEN, CWMP ;
BARENDRECHT, E ;
VANSTRALEN, SJD .
ELECTROCHIMICA ACTA, 1984, 29 (05) :633-642
[6]   EFFECT OF ELECTROLYTICALLY EVOLVED GAS BUBBLES ON THICKNESS OF DIFFUSION LAYER [J].
JANSSEN, LJJ ;
HOOGLAND, JG .
ELECTROCHIMICA ACTA, 1970, 15 (06) :1013-&
[7]   FLOW OF BUBBLES THROUGH NOZZLES [J].
KUO, JT ;
WALLIS, GB .
INTERNATIONAL JOURNAL OF MULTIPHASE FLOW, 1988, 14 (05) :547-564
[8]   The motion of electrolytic gas bubbles near electrodes [J].
Lubetkin, S .
ELECTROCHIMICA ACTA, 2002, 48 (04) :357-375
[9]   Application of a two-phase flow model for natural convection in an electrochemical cell [J].
Mat, MD ;
Aldas, K .
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2005, 30 (04) :411-420
[10]   A two-phase flow model for hydrogen evolution in an electrochemical cell [J].
Mat, MD ;
Aldas, K ;
Ilegbusi, OJ .
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2004, 29 (10) :1015-1023