Computational Fluid Dynamics (CFD) Simulation and Comparison for Different Numbers of Baffles to Reduce Concentration Polarization Effects in Membrane Tubes

IF 1.1 Q3 ENGINEERING, MULTIDISCIPLINARY

Journal of Engineering and Technological Sciences Pub Date : 2017-04-30 DOI:10.5614/j.eng.technol.sci.2017.49.1.7

M. Ahsan, A. Hussain

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引用次数: 6

Abstract

This research shows the use of computational fluid dynamics (CFD) with finite volume method (FVM) to study the species diffusion and mixing characteristics in a tubular membrane filled with vertical baffles. This study exhibits how to set up the FVM for CFD simulation and residence time distribution (RTD) analysis and compare the mixing characteristics of two membrane tubes with a different number of baffles using RTD curves. In this study, the effects of the number of baffles on flow patterns, features and behavior of air were identified completely through computational fluid dynamics (CFD) simulations. In addition, a two-dimensional simulation was implemented to study the effects of steady and unsteady (transient) flow in the tubular membrane. The residence time distribution (RTD) of a tracer in a co-current flow pattern was investigated. For this, the tracer was injected for 1 second into the membrane tubes on a frozen flow field and the concentration variation of the tracer over time was monitored at the outlet.

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不同挡板数减少膜管内浓度极化效应的计算流体动力学(CFD)模拟与比较

本文采用有限体积计算流体力学方法(CFD)研究了垂直挡板填充管状膜内的物质扩散和混合特性。本研究展示了如何建立FVM进行CFD模拟和停留时间分布(RTD)分析，并利用RTD曲线比较了两种不同挡板数的膜管的混合特性。在本研究中，通过计算流体动力学(CFD)模拟，完全确定了挡板数量对空气流动模式、特征和行为的影响。此外，采用二维数值模拟方法研究了管状膜内定常流动和非定常流动的影响。研究了一种示踪剂在共电流流型中的停留时间分布。为此，在冷冻流场上将示踪剂注射到膜管中1秒，并在出口监测示踪剂随时间的浓度变化。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Engineering and Technological Sciences ENGINEERING, MULTIDISCIPLINARY-

CiteScore

2.30

自引率

11.10%

发文量

审稿时长

24 weeks

期刊介绍： Journal of Engineering and Technological Sciences welcomes full research articles in the area of Engineering Sciences from the following subject areas: Aerospace Engineering, Biotechnology, Chemical Engineering, Civil Engineering, Electrical Engineering, Engineering Physics, Environmental Engineering, Industrial Engineering, Information Engineering, Mechanical Engineering, Material Science and Engineering, Manufacturing Processes, Microelectronics, Mining Engineering, Petroleum Engineering, and other application of physical, biological, chemical and mathematical sciences in engineering. Authors are invited to submit articles that have not been published previously and are not under consideration elsewhere.