Non-axisymmetric Homann MHD stagnation point flow of Al2O3-Cu/water hybrid nanofluid with shape factor impact  

作　　者：M.KHAN J.AHMED F.SULTANA M.SARFRAZ 

机构地区：[1]Department of Mathematics,Quaid-i-Azam University,Islamabad 44000,Pakistan [2]Department of Basic Sciences,University of Engineering and Technology,Taxila 47050,Pakistan

出　　处：《Applied Mathematics and Mechanics(English Edition)》2020年第8期1125-1138,共14页应用数学和力学（英文版）

摘　　要：The heat transfer of Homann flow in the stagnation region of the Al2 O3-Cu/water hybrid nanofluid is investigated by adopting the Tiwari-Das model over a cylindrical disk.The effects of the nanoparticle shape,the viscous dissipation,and the nonlinear radiation are considered.The governing equations are obtained by using similarity transformations,and the numerical outcomes for the flow and the temperature field are noted by bvp4 c on MATLAB.The numerical solutions of the flow field are compared with the asymptotic behaviors of large shear-to-strain-rate ratio.The effects of variations of parameters involved are inspected for both nanofluid and hybrid nanofluid flows,temperature profiles,local Nusselt numbers,and skin frictions.It is concluded that the velocity and temperature fields in the hybrid nanophase function more rapidly than those in the nanofluid phase.

关 键 词：cylindrical disk hybrid nanofluid magnetic field non-linear thermal radiation stagnation point flow viscous dissipation 

分 类 号：O361[理学—流体力学]