Augmenting the Energy Transport Through Magnetic Ferrofluid Filled Inside the I-Shaped Cavity Under the Influence of Thermal Radiation

IF 2.7 Q3 NANOSCIENCE & NANOTECHNOLOGY Journal of Nanofluids Pub Date : 2023-04-01 DOI:10.1166/jon.2023.1952
M. Siddiqui, T. Javed, B. Iftikhar
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引用次数: 1

Abstract

The effects of heat generation/absorption and thermal radiation on MHD natural convective flow inside the I-shaped cavity saturated with ferrofluid have been investigated in this study. The Cobalt-kerosene type of ferrofluid has been used with solid volume fractions (Φ = 0∼0.06). The penalty finite element technique with Galerkin weighted method has been used to attain the solution of highly non-linear governing PDE’s. Simulations are carried out in terms of stream lines, heat-lines, isotherms contours and local Nusselt number for wide range of physical flow parameters including thermal radiation (NR = 0∼10), heat generation/absorption (ξ = −5∼5), Hartmann (Ha = 0∼10), Rayleigh (Ra = 103∼106), Prandtl (Pr = 6.83), Eckert (Ec = 10−5) and Magnetic number (Mn = 5 * 102). The obtained results show that increasing the concentration of solid volume friction (Φ) from 0 (pure base fluid) to 0.06 has improved heat transfer by 28% and velocity profiles by 23%. Increasing the Rayleigh number from 103 to 106 has significantly improved the total heat transfer rate along the bottom wall from 1.12 to 8.842. It is also noted that the intensity of circulation cells of streamlines and headlines has decreased with increasing Hartmann number (Ha).
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热辐射作用下增强i型腔内磁流体的能量输运
本文研究了热生成/吸收和热辐射对含铁磁流体的i型腔内MHD自然对流流动的影响。钴煤油型铁磁流体已被用于固体体积分数(Φ = 0 ~ 0.06)。采用惩罚有限元技术和伽辽金加权法求解高度非线性控制偏微分方程。对包括热辐射(NR = 0 ~ 10)、产热/吸收(ξ =−5 ~ 5)、哈特曼(Ha = 0 ~ 10)、瑞利(Ra = 103 ~ 106)、普朗特(Pr = 6.83)、埃克特(Ec = 10 ~ 5)和磁数(Mn = 5 * 102)在内的大范围物理流动参数进行了流线、热线、等温线等高线和局部努赛尔数的模拟。结果表明,将固体体积摩擦浓度(Φ)从0(纯基液)提高到0.06,传热性能提高28%,速度剖面提高23%。将瑞利数从103增加到106,沿底壁总换热率从1.12显著提高到8.842。流线和标题的循环细胞强度随哈特曼数(Ha)的增加而减小。
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来源期刊
Journal of Nanofluids
Journal of Nanofluids NANOSCIENCE & NANOTECHNOLOGY-
自引率
14.60%
发文量
89
期刊介绍: Journal of Nanofluids (JON) is an international multidisciplinary peer-reviewed journal covering a wide range of research topics in the field of nanofluids and fluid science. It is an ideal and unique reference source for scientists and engineers working in this important and emerging research field of science, engineering and technology. The journal publishes full research papers, review articles with author''s photo and short biography, and communications of important new findings encompassing the fundamental and applied research in all aspects of science and engineering of nanofluids and fluid science related developing technologies.
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