Numerical simulation of Cu-water nanofluid magneto-hydro-dynamics and heat transfer in a cavity containing a circular cylinder of different size and positions

被引：2
作者：
Ahrara A.J. [1 ]
Djavareshkianb M.H. [1 ]
Ataiyanc M. [2 ]
机构：
[1] Faculty of Engineering, Mechanical Engineering Department, Ferdowsi University of Mashhad
[2] Faculty of Engineering, Electrical and Electronics Engineering Department, Shiraz University of Technology
来源：
Djavareshkianb, Mohammad Hassan (javareshkian@um.ac.ir) | 1600年 / International Information and Engineering Technology Association卷 / 35期
关键词：
Circular Obstacle; Direction; Magnetic Field Intensity; Nanoparticles' Volume Fraction;
D O I：
10.18280/ijht.350225
中图分类号：
学科分类号：
摘要：
In the present study, a nanofluid filled cavity with sinusoidal temperature boundary condition, under the influence of an inclined magnetic field is investigated numerically. The LBM method is applied to simulate the Cu-Water nanofluid flow around an average temperature circular cylinder. In this study, the different braking manners of the magnetic field and the obstacle are compared for different field intensities and directions and various obstacle sizes and positions. The flow and heat transfer behavior of the nanofluid were observed for different Rayleigh numbers (103-106), Hartmann numbers (0-90), nanoparticles' volume fraction (0-6 %), magnetic field direction = (0-90o) and obstacle aspect ratios (0.05, 0.1 and 0.2) and positions (0-8). The results indicated that the influence of nanoparticles for this geometry and boundary condition is highly dependent on the Rayleigh and Hartmann numbers. Also, it was shown that for lower Ra numbers, the obstacle with an aspect ratio of 0.1 presents better heat transfer rate; while for higher Ra numbers the obstacle size is much less important than its position.
引用
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页码：403 / 415
页数：12
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