The objective of the present work is to analyze the flow, heat and mass transfer characteristics in a thin nanofluid film over a heated stretched sheet in the presence of a non-uniform heat source/sink and thermal radiation. Similarity variables are used to transform the partial differential equations into a system of ordinary differential equations. The resulting system of nonlinear ordinary differential equations is then solved numerically by using the Runge-Kutta-Fehlberg integration scheme with a shooting technique. The effects of the unsteadiness parameter, the thermal radiation, the non-uniform heat source/sink parameter on flow and heat transfer fields are analyzed. It is found that an increase in the unsteadiness parameter is to increase the velocity and temperature gradient profiles. However, an increase in the thermal radiation parameter affects the nanoparticle temperature gradient of the nanofluid film but the reversed is true with the concentration gradient. Furthermore, by increasing the values of the non-uniform heat source/sink parameter there is an increase in the nanoparticle concentration gradient profiles.

本工作的目的是分析在存在不均匀的热源/散热片和热辐射的情况下，加热的拉伸片材上的纳米流体薄膜中的流动，传热和传质特性。相似变量用于将偏微分方程转换为常微分方程组。然后，使用带有射击技术的Runge-Kutta-Fehlberg积分方案对所得的非线性常微分方程组进行数值求解。分析了不稳定参数，热辐射，热源/散热器参数不均匀对流场和传热场的影响。发现不稳定参数的增加是为了增加速度和温度梯度分布。然而，热辐射参数的增加会影响纳米流体薄膜的纳米颗粒温度梯度，但浓度梯度则相反。此外，通过增加非均匀热源/散热器参数的值，纳米颗粒浓度梯度分布增加。