Exact solutions for magnetohydrodynamic nanofluids flow and heat transfer over a permeable axisymmetric radially stretching/shrinking sheet  

作　　者：U.S.Mahabaleshwar G.P.Vanitha L.M.Pérez Emad H.Aly I.Pop 

机构地区：[1]Department of Studies in Mathematics,Davangere University,Shivagangothri,Davangere,India [2]Departamento de F´ısica,FACI,Universidad de Tarapac´a,Casilla 7D,Arica,Chile [3]Department of Mathematics,Faculty of Education,Ain Shams University,Roxy,Cairo,Egypt [4]Department of Mathematics,Babes-Bolyai University,400084 Cluj-Napoca,Romania

出　　处：《Chinese Physics B》2024年第2期108-114,共7页中国物理B（英文版）

基　　金：LMP acknowledges financial support from ANID through Convocatoria Nacional Subvención a Instalación en la Academia Convocatoria Año 2021,Grant SA77210040。

摘　　要：We report on the magnetohydrodynamic impact on the axisymmetric flow of Al_(2)O_(3)/Cu nanoparticles suspended in H_(2)O past a stretched/shrinked sheet.With the use of partial differential equations and the corresponding thermophysical characteristics of nanoparticles,the physical flow process is illustrated.The resultant nonlinear system of partial differential equations is converted into a system of ordinary differential equations using the suitable similarity transformations.The transformed differential equations are solved analytically.Impacts of the magnetic parameter,solid volume fraction and stretching/shrinking parameter on momentum and temperature distribution have been analyzed and interpreted graphically.The skin friction and Nusselt number were also evaluated.In addition,existence of dual solution was deduced for the shrinking sheet and unique solution for the stretching one.Further,Al_(2)O_(3)/H_(2)O nanofluid flow has better thermal conductivity on comparing with Cu/H_(2)O nanofluid.Furthermore,it was found that the first solutions of the stream are stable and physically realizable,whereas those of the second ones are unstable.

关 键 词：MAGNETOHYDRODYNAMIC NANOFLUID stretching/shrinking sheet axisymmetric flow analytical solution suction/injection 

分 类 号：O361.3[理学—流体力学] TK124[理学—力学]