Annulus shape tank with convective flow in a porous zone with impose of MHD

Yu-Ming Chu, Zahra Salahshoor, Maliheh Saber Shahraki, Ahmad Shafee and Quang-Vu Bach
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Yu-Ming Chu: Department of Mathematics, Huzhou University, Huzhou 313000, P. R. China†Hunan Provincial Key Laboratory of Mathematical, Modeling and Analysis in Engineering, Changsha University of Science & Technology, Changsha 410114, P. R. China
Zahra Salahshoor: #x2021;Department of Civil and Environmental Engineering, University of Missouri, E2509 Lafferre Hall, Columbia, MO 65211, USA
Maliheh Saber Shahraki: #xA7;Department of Mechanical Engineering, Semnan University, Semnan, Iran
Ahmad Shafee: #xB6;Institute of Research and Development, Duy Tan University, Da Nang 550000, Vietnam
Quang-Vu Bach: #x2225;Sustainable Management of Natural Resources and Environment Research Group, Faculty of Environment and Labour Safety, Ton Duc Thang University, Ho Chi Minh City, Vietnam

International Journal of Modern Physics C (IJMPC), 2020, vol. 31, issue 12, 1-14

Abstract: Current investigation deals with influence of inclusion of nanoparticles within the permeable medium within a tank with circular outer wall. The inner surface is hot and the radiative term has been imposed in temperature equation. Vorticity formula helps us to remove the pressure terms from equations and CVFEM was incorporated to calculate the amount of scalars in each node. With correlating the current data from previous paper, verification procedure was done which demonstrates good accuracy. Permeability has crucial role and greater values of Da results in stronger thermal penetration and isotherms become more disturbed. Intensity of cell augments with rise of Da about 70% in absence of Ha. Impose of Rd cannot affect the isotherms too much while it can change the Nu regarding the definition of this factor. When Da=0.01, growth of Ha can decline the strength of eddy about 35%. Given Ha=20, as Da increases, Nu enhances about 10.24% and 0.25% when Ra=1e5 and 1e3, respectively. Replacing platelet with sphere shape can augment the Nu about 0.38% and 0.6% when Ha=20 and 0, respectively.

Keywords: Natural convection; radiation; hybrid nanoparticle; permeability; MHD (search for similar items in EconPapers)
Date: 2020
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DOI: 10.1142/S0129183120501685

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