Numerical Study of Lorentz Force Interaction with Micro Structure in Channel Flow

被引:28
作者
Ahmad, Shabbir [1 ]
Ali, Kashif [2 ]
Ahmad, Sohail [3 ]
Cai, Jianchao [1 ]
机构
[1] China Univ Geosci, Inst Geophys & Geomat, Wuhan 430074, Peoples R China
[2] Muhammad Nawaz Sharif Univ Engn & Technol, Dept Basic Sci & Humanities, Multan 60000, Pakistan
[3] Bahauddin Zakariya Univ, Ctr Adv Studies Pure & Appl Math, Multan 60000, Pakistan
基金
中国国家自然科学基金;
关键词
micropolar fluid; channel; magnetic field; heat transfer; FLUID-FLOW; HEAT-TRANSFER; LAMINAR-FLOW; MHD FLOW; SIMULATION; NANOFLUID; BEHAVIOR;
D O I
10.3390/en14144286
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
The heat transfer Magnetohydrodynamics flows have been potentially used to enhance the thermal characteristics of several systems such as heat exchangers, electromagnetic casting, adjusting blood flow, X-rays, magnetic drug treatment, cooling of nuclear reactors, and magnetic devices for cell separation. Our concern in this article is to numerically investigate the flow of an incompressible Magnetohydrodynamics micropolar fluid with heat transportation through a channel having porous walls. By employing the suitable dimensionless coordinates, the flow model equations are converted into a nonlinear system of dimensionless ordinary differential equations, which are then numerically treated for different preeminent parameters with the help of quasi-linearization. The system of complex nonlinear differential equations can efficiently be solved using this technique. Impact of the problem parameters for microrotation, temperature, and velocity are interpreted and discussed through tables and graphs. The present numerical results are compared with those presented in previous literature and examined to be in good contact with them. It has been noted that the imposed magnetic field acts as a frictional force which not only increases the shear stresses and heat transfer rates at the channel walls, but also tends to rotate the micro particles in the fluid more rapidly. Furthermore, viscous dissipation may raise fluid temperature to such a level that the possibility of thermal reversal exists, at the geometric boundaries of the domain. It is therefore recommended that external magnetic fields and viscous dissipation effects may be considered with caution in applications where thermal control is required.
引用
收藏
页数:18
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