A numerical model is developed to examine the effects of thermal radiation on unsteady mixed convection flow of a viscous dissipating incompressible micropolar fluid adjacent to a heated vertical stretching surface in the presence of the buoyancy force and heat generation/absorption. The Rosseland approximation is used to describe the radiative heat flux in the energy equation. The model contains nonlinear coupled partial differential equations which have been converted into ordinary differential equation by using the similarity transformations. The dimensionless governing equations for this investigation are solved by Runge-Kutta-Fehlberg fourth fifth-order method with shooting technique. Numerical solutions are then obtained and investigated in detail for different interesting parameters such as the local skin-friction coefficient, wall couple stress, and Nusselt number as well as other parametric values such as the velocity, angular velocity, and temperature.

中文翻译：

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热辐射对具有粘性耗散和生热/吸收的非稳定拉伸表面微极性流体混合对流的影响

建立了一个数值模型，以研究在有浮力和热量产生/吸收的情况下，热辐射对与加热的垂直拉伸表面相邻的粘性耗散不可压缩微极性流体的不稳定混合对流的影响。Rosseland逼近用于描述能量方程中的辐射热通量。该模型包含非线性耦合的偏微分方程，通过使用相似变换将其转换为常微分方程。本研究的无量纲控制方程是通过Runge-Kutta-Fehlberg射击技术的四阶五阶方法求解的。然后，获得了数值解，并针对不同的有趣参数（例如局部皮肤摩擦系数，