Numerical Simulations of Hydromagnetic Mixed Convection Flow of Nanofluids inside a Triangular Cavity on the Basis of a Two-Component Nonhomogeneous Mathematical Model  

作　　者：Khadija A.Al-Hassani M.S.Alam M.M.Rahman 

机构地区：[1]Department of Mathematics,College of Science,Sultan Qaboos University,Muscat,Oman [2]Department of Mathematics,Jagannath University,Dhaka,Bangladesh

出　　处：《Fluid Dynamics & Materials Processing》2021年第1期1-20,共20页流体力学与材料加工（英文）

基　　金：IG/SCI/MATH/20/03.

摘　　要：Nanofluids have enjoyed a widespread use in many technological applications due to their peculiar properties.Numerical simulations are presented about the unsteady behavior of mixed convection of Fe_(3)O_(4)-water,Fe_(3)O_(4)-kerosene,Fe_(3)O_(4)-ethylene glycol,and Fe_(3)O_(4)-engine oil nanofluids inside a lid-driven triangular cavity.In particular,a two-component non-homogeneous nanofluid model is used.The bottom wall of the enclosure is insulated,whereas the inclined wall is kept a constant(cold)temperature and various temperature laws are assumed for the vertical wall,namely:
θ=1(Case 1),θ=Yð1YÞ(Case 2),andθ=sinð2-YÞ(Case 3).A tilted magnetic field of uniform strength is also present in the fluid domain.From a numerical point of view,the problem is addressed using the Galerkin weighted residual finite element method.The role played by different parameters is assessed,discussed critically and interpreted from a physical standpoint.We find that a higher aspect ratio can produce an increase in the average Nusselt number.Moreover,the Fe_(3)O_(4)-EO and Fe_(3)O_(4)-H2O nanofluids provide the highest and smallest rate of heat transfer,respectively,for all the considered(three variants of)thermal boundary conditions.

关 键 词：NANOFLUID mixed convection lid-driven triangular cavity finite element method 

分 类 号：TB3[一般工业技术—材料科学与工程]