Electrical Unsteady MHD Natural Convection Flow of Nanofluid with Thermal Stratification and Heat Generation/Absorption

IF 0.3 Q4 MATHEMATICS Matematika Pub Date : 2018-12-02 DOI:10.11113/MATEMATIKA.V34.N2.1016
Y. Daniel, A. A. Zainal, Z. Ismail, F. Salah
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引用次数: 5

Abstract

In this paper, we analyzed the effects of thermal radiation, chemical reaction, heat generation/absorption, magnetic and electric fields on unsteady natural convection flow and heat transfer due to nanofluid over a permeable stretching sheet. The transport equations used passively controlled boundary condition rather than actively. A similarity solution is employed to transformed the governing equations from nonlinear partial differential equations to a set of ordinary differential equations, and then solve using Keller box method. It was found that the temperature is a decreasing function with the thermal stratification due to the fact the density of the fluid in the lower vicinity is much higher compared to the upper region, whereas the thermal radiation, viscous dissipation and heat generation enhanced the nanofluid temperature and thermal layer thickness.
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具有热分层和生热/吸热的纳米流体的电非定常MHD自然对流
在本文中,我们分析了热辐射、化学反应、生热/吸收、磁场和电场对纳米流体在可渗透拉伸片上的非稳态自然对流和传热的影响。输运方程采用被动控制边界条件,而不是主动控制边界条件。采用相似解将控制方程从非线性偏微分方程转化为一组常微分方程,然后用Keller盒法求解。研究发现,温度是热分层的递减函数,因为与上部区域相比,下部区域的流体密度高得多,而热辐射、粘性耗散和热量产生提高了纳米流体的温度和热层厚度。
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来源期刊
Matematika
Matematika MATHEMATICS-
自引率
25.00%
发文量
0
审稿时长
24 weeks
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