在多孔平板磁流体动力边界层吹吸与热辐射对流动影响

摘要

The boundary layer flow and heat transfer of stretching sheet in magnetic field are analyzed.No-slip boundary condition is corresponding to different velocity slip and thermal slip.And thermal radiation is considered in the temperature equation in this paper.The momentum and energy equations are nonlinear ordinary differential equations with similarity transformation.These numerical solutions are calculated through the method of Runge-Kutta.The results show that horizontal velocity decreases with the increasing slip parameter and magnetic parameter.The temperature increases with the increasing magnetic parameter and decreases with the increasing thermal slip parameter.Thermal radiation enhances the effective thermal diffusivity and rises the temperature.%存在磁场时对多孔通道平板边界层流动和传热进行分析,无滑动边界条件相对应的、不同的速度滑移和温度滑移;并在温度方程中考虑热辐射条件.相应的动量和能量方程为非线性常微分方程;并将其进行相似变换.通过龙格库塔的计算方法获得这些方程的数值解.结果发现,增加滑移参数以及增加磁参数时,水平速度减少;增加的磁参数而温度增加;增加热滑参数而温度降低;热辐射增强了有效热扩散率并使温度上升.