Numerically simulated behavior of radiative Fe_(3)O_(4) and multi-walled carbon nanotube hybrid nanoparticle flow in presence of Lorentz force  

作　　者：S.A.SHEHZAD M.SHEIKHOLESLAMI T.AMBREEN A.SHAFEE 

机构地区：[1]Department of Mathematics,COMSATS University Islamabad,Sahiwal 57000,Pakistan [2]Renewable Energy Systems and Nanofluid Applications in Heat Transfer Laboratory,Babol Noshirvani University of Technology,Babol 47148-71167,Iran [3]Department of Mechanical Engineering,Babol Noshirvani University of Technology,Babol 47148-71167,Iran [4]School of Mechanical Engineering,Kyungpook National University,Daegu 41566,South Korea [5]Institute of Research and Development,Duy Tan University,Da Nang 550000,Vietnam

出　　处：《Applied Mathematics and Mechanics(English Edition)》2021年第3期347-356,共10页应用数学和力学（英文版）

摘　　要：Free convection in hybrid nanomaterial-saturated permeable media is crucial in various engineering applications.The present study aims to investigate the free convection of an aqueous-based hybrid nanomaterial through a zone under the combined effect of the Lorentz force and radiation.The natural convection of the hybrid nanomaterial is modeled by implementing a control volume finite element method(CVFEM)-based code,whereas Darcy assumptions are used to model the porosity terms in the momentum buoyancy equation involving the average Nusselt number Nu_(ave),flow streamlines,and isotherm profiles.A formula for estimating Nu_(ave) is proposed.The results show that the magnetic force retards the flow,and the fluid tends to attract the magnetic field source.Nu_(ave) is directly correlated with the Rayleigh number and radiation;however,it is indirectly dependent on the Hartmann number.Conduction is the dominant mode at larger Darcy and Hartmann numbers.

关 键 词：free convection hybrid nanoparticle Darcy porous space Hartmann number RADIATION 

分 类 号：O361[理学—流体力学]