Here we numerically analyse the effects of viscous dissipation and Joule heating on forced convection heat transfer rate of electrically conducting magnetohydrodynamic, (MHD) power law fluid flow through annular duct. Mathematical model is formulated for constant properties power law fluid with steady, incompressible and laminar fully developed flow assumptions. Heat transfer results are determined by taking constant heat flux with peripheral wall temperature “known as H1 thermal boundary condition” at the solid walls of the channel. It has been observed that the effect of viscous dissipation reduces due to enhance damping magnetic field effect by increasing the value of Hartman number, Ha, especially in the case of shear thickening fluids.

在这里，我们对粘性耗散和焦耳热对导电磁流体动力（MHD）幂律流体通过环形管道的强制对流传热速率的影响进行了数值分析。建立了具有稳定，不可压缩和层流充分发展的流动假设的恒定特性幂律流体的数学模型。传热结果是通过在通道的实心壁上采用周壁温度恒定的热通量（称为H 1热边界条件）确定的。已经观察到，通过增加哈特曼数Ha的值来增强阻尼磁场效应，特别是在剪切增稠流体的情况下，由于增强的阻尼磁场效应，粘性耗散的影响减小。