Numerical simulation of mass transport in a filter press type electrochemical reactor FM01-LG: Comparison of predicted and experimental mass transfer coefficient

Eligio P. Riuero; Fernando F. Rivera; Martin R. Cruz-Diaz

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Numerical simulation of mass transport in a filter press type electrochemical reactor FM01-LG: Comparison of predicted and experimental mass transfer coefficient

机译：的质量输运数值模拟一个过滤器媒体类型电化学反应器FM01-LG:比较预测和实验质量传递系数

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This paper studies flow characteristics and their effect on local mass transfer rate to a flat plate electrode in a FM01-LC electrochemical reactor. 3D reactor simulations under limiting current and turbulent flow conditions were performed using potassium ferro-ferricyanide electrochemical system with sodium sulfate as supporting electrolyte. The model consists of mass-transport equations coupled to hydrodynamic solution obtained from Reynolds-averaged Navier-Stokes equations using standard k-ε turbulence model, where the average velocity field, the turbulence level given by the eddy kinetic energy and the turbulent viscosity of the hydrodynamic calculation were used to evaluate the convection, turbulent diffusion and the concentration wall function. The turbulent mass diffusivity was evaluated by Kays-Crawford equation using heat and mass transfer analogies, while wall functions, for mass transport, were adapted from Launder-Spalding equations. Simulation results describe main flow properties, concentration profiles throughout the entire volume of the reactor and local diffusion flux over the electrode. Overall mass transfer coefficients estimated by simulation, without fitting parameters, agree closely with experimental coefficients determined from limiting current measurements (1.85% average error) for Re between 187 and 1407.

机译：本文研究流动特性和他们的影响当地的传质速率平FM01-LC电化学阳极反应堆。当前和紊流条件使用钾ferro-ferricyanide执行电化学系统与硫酸钠支持电解质。质量输运方程耦合水动力从Reynolds-averaged获得解决方案使用标准k -εn - s方程湍流模型,平均速度场,艾迪的动荡水平动能和湍流粘性被用来评估水动力计算湍流扩散和对流浓度墙功能。扩散系数被Kays-Crawford评估方程采用传热传质类比,大众运输,而墙功能改编自Launder-Spalding方程。仿真结果描述主要流属性,配置文件在整个浓度反应堆的体积和本地扩散通量在电极。系数估计的仿真,没有拟合参数,与达成一致实验系数确定极限电流测量(1.85%的平均水平错误)在187年和1407年之间。

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来源
《Chemical Engineering Research & Design: Transactions of the Institution of Chemical Engineers》 |2012年第11期|1969-1978|共10页
作者
Eligio P. Riuero; Fernando F. Rivera; Martin R. Cruz-Diaz;
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Tecnoiogico de Estudios Superiores de Ecatepec, Diuision de Quimica y Bioquimica, Av. Tecnologico S/N Esq. Av. Hank Gonzalez, Ecatepec, Estado de Mexico, 55120, Mexico;

Universidad Nacional Autdnoma de Mexico, Facultad de Estudios Superiores Cuautitldn, Departamento de Ingenieria y Tecnologia, Av. Primero de Mayo, Cuautitldn Izcalli, Estado de Mexico, 54740, Mexico;

Uniuersidad Autonoma Metropolitana - Iztapalapa, Departamento de Quimica, Av. San Rafael Atlixco 186, Mexico D.F. 09340, Mexico;

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正文语种英语
中图分类国际共产主义运动;
关键词
Mass transfer coefficient; Turbulent Flow; mathematical modelingNet solute removal rateReactorsHydrodynamicsnumerical simulationmass transportturbulence modelsTurbulent energyLimiting currentMASS TRANSFER;

机译：传质系数;湍流流;数学modelingNet溶质清除rateReactorsHydrodynamicsnumerical simulationmasstransportturbulence modelsTurbulentenergyLimiting currentMASS转移;

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Numerical simulation of mass transport in a filter press type electrochemical reactor FM01-LG: Comparison of predicted and experimental mass transfer coefficient

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