▎ 摘　　要

In this paper, heat transfer of hydromagnetic water-graphene oxide nanofluid flow in the channel with asymmetric forced convection on walls is analyzed. The basic partial differential equations include momentum and energy for this problem are reduced to the ordinary differential equations which are solved numerically by using finite element method (FEM) using FlexPDE software package. For validity, the results are compared with 4th order Runge-Kutta numerical solution. The effects of different physical parameters such as the nanoparticle volume fraction, the Magnet parameter, the Biot number and the Eckert number on the dimensionless velocity profile, the dimensionless temperature profile and the dimensionless gradient temperature profile are discussed. It was concluded that with increase in the nanoparticle volume fraction and Magnet parameter, the dimensionless velocity profiles of flow reduce. With rising of the Biot number, the dimensionless temperature decreases and dimensionless gradient temperature profile increases. Moreover, by increasing of the nanoparticle fraction volume, the dimensionless temperature profiles of flow is increased and the heat transfer coefficient enhanced. In addition, by increasing of the nanoparticle fraction volume, the convection on walls increases within the channel. Also, with increases of the Eckert number, the dimensionless temperature profile increases and the heat transfer rate on the channel walls is increased. (C) 2018 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.