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Effect of Flow Distributor Configuration on the Hydrodynamics in a Multipurpose Flow Electrochemical Reactor: Numerical Analysis and Experimental Characterization Employing Digital Image Treatment

计算流体力学 停留时间分布 粒子图像测速 流量(数学) 经销商 机械 计算机科学 流体力学 表征(材料科学) 工作(物理) 材料科学 工艺工程 机械工程 工程类 纳米技术 湍流 物理
作者
J.T. López-Maldonado,Sebastián Salazar-Colores,Saúl Piedra,Fernando F. Rivera
出处
期刊:Industrial & Engineering Chemistry Research [American Chemical Society]
卷期号:62 (7): 3327-3337 被引量:4
标识
DOI:10.1021/acs.iecr.2c04306
摘要

Electrochemical reactors with a flat parallel plate electrode configuration and diverse flow channel designs have been extensively used in the study of different electrochemical processes at lab and bench scales, and they have been scaled up for some electrosynthesis and energy-storage processes at semipilot and industrial levels. Progress in the electrochemical process applications demands the use of different computer and experimental-assisted techniques to design novel electrochemical reactors. The objective of this work is to evaluate the hydrodynamic performance of different electrochemical reactor designs and quantify their effect on velocity magnitude through numerical and experimental studies using computational techniques like computational fluid dynamics (CFD) and digital image treatment. For local velocity magnitude measurements, a digital imaging treatment, based on the use of an optical flow algorithm, to try the validation of velocity profiles obtained by CFD is implemented. This experimental technique determined reliably that the problems associated with the use of the empty channel in the flow pattern are mainly associated with high velocities and recirculation zones, which are not detected by CFD simulations in the first instance. Also, the findings associated with the velocity behavior using this proposed technique agreed with those obtained by the traditional experimental flow characterization technique like residence time distribution, nevertheless, further work will be needed to refine the measurements and perform its comparison with other most employed velocimetry techniques.

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