Double-diffusive convection of a nanofluid in a porous cavity containing rotating hexagon and circular cylinders: ISPH simulations

被引:7
|
作者
Aly, Abdelraheem M. [1 ,2 ]
Raizah, Zehba [1 ]
机构
[1] King Khalid Univ, Coll Sci, Dept Math, Abha, Saudi Arabia
[2] South Valley Univ, Fac Sci, Dept Math, Qena, Egypt
关键词
Soret number; Nanofluid; Magnetic field; Circular cylinder; Dufour number; ISPH method; Hexagonal shape; MAGNETOHYDRODYNAMIC NATURAL-CONVECTION; LATTICE BOLTZMANN METHOD; MIXED CONVECTION; HEAT-TRANSFER; ENTROPY GENERATION; MAGNETIC-FIELD; DUFOUR; SORET; ENCLOSURE; FLUID;
D O I
10.1108/HFF-01-2021-0066
中图分类号
O414.1 [热力学];
学科分类号
摘要
Purpose - The purpose of this study is to apply an incompressible smoothed particle hydrodynamics (ISPH) method to simulate the Magnetohydrodynamic (MHD) free convection flow of a nanofluid in a porous cavity containing rotating hexagonal and two circular cylinders under the impacts of Soret and Dufour numbers. Design/methodology/approach - The inner shapes are rotating around a cavity center by a uniform circular motion at angular rate v. An inner hexagonal shape has higher temperature Th and concentration Ch than the inner two circular cylinders in which the temperature is Tc and concentration is Cc. The performed numerical simulations are presented in terms of the streamlines, isotherms and isoconcentration as well as the profiles of average Nusselt and Sherwood numbers. Findings - The results indicated that the uniform motions of inner shapes are changing the characteristics of the fluid flow, temperature and concentration inside a cavity. An augmentation on a Hartman parameter slows down the flow speed and an inclination angle of amagnetic field raises the flow speed. A rise in the Soret number accompanied by a reduction in the Dufour number lead to a growth in the concentration distribution ina cavity. Originality/value - ISPH method is used to simulate the double-diffusive convection of novel rotating shapes in a porous cavity. The inner novel shapes are rotating hexagonal and two circular cylinders.
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页码:432 / 452
页数:21
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