抽吸/注入对具有电渗效应的多孔微通道中的电磁流体力学自然对流的作用

Q3 Chemical Engineering

International Journal of Applied Mechanics and Engineering Pub Date : 2023-12-19 DOI:10.59441/ijame/173021

M. Oni, Usman S. Rilwan

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引用次数: 0

摘要

本文研究了吸力/注入对具有电渗效应的垂直微通道中随时间变化的电磁流体力学（EMHD）自然（自由）对流的作用。借助拉普拉斯变换方法，将支配能量和动量方程从偏微分方程（PDE）转换为常微分方程（ODE），从而得到拉普拉斯域中的流体温度和速度。利用黎曼和近似法得出了速度曲线和温度分布的半解析解。随后，编写了一个 MATLAB 程序，通过折线图研究普朗特数 Pr、哈特曼数 Ha、x 和 z 方向上的电场强度（Ex 和 Sz）以及格拉肖夫数 Gr 对流体速度、温度、集肤摩擦和质量流量的影响。结果表明，吸入/注入参数改变了温度分布和速度曲线，因此也说明了调节参数对流动形成的作用。.

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Role of suction/injection on electromagnetohydrodynamics natural convection flow in a porous microchannel with electroosmotic effect

This paper examined the role of suction/injection on time-dependent electromagnetohydrodynamics (EMHD) natural (free) convection flow in a vertical microchannel with electroosmotic effect. With the aid of Laplace transformation method, the governing energy and momentum equations are converted from partial differential equation (PDE) into ordinary differential equation (ODE) to obtain fluid temperature and velocity in Laplace domain. The semi-analytical solutions of the velocity profile and temperature distribution have been derived using the Riemann sum approximation. After which a MATLAB program was written to study the effects of Prandlt number Pr, Hartmann number Ha, electric field strength on x and z directions (Ex and Sz) and Grashof number Gr in fluid velocity, temperature, skin-friction and mass flow rate in terms of line graphs. Result shows the role of suction/injection parameter alters the temperature distribution and velocity profile, so also how effective the governing parameters contribute to the flow formation. .

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来源期刊

International Journal of Applied Mechanics and Engineering Engineering-Civil and Structural Engineering

CiteScore

1.50

自引率

0.00%

发文量

审稿时长

35 weeks

期刊介绍： INTERNATIONAL JOURNAL OF APPLIED MECHANICS AND ENGINEERING is an archival journal which aims to publish high quality original papers. These should encompass the best fundamental and applied science with an emphasis on their application to the highest engineering practice. The scope includes all aspects of science and engineering which have relevance to: biomechanics, elasticity, plasticity, vibrations, mechanics of structures, mechatronics, plates & shells, magnetohydrodynamics, rheology, thermodynamics, tribology, fluid dynamics.