In the present article, we perform the second law analysis of classical Blasius flow accounting the effects of nonlinear radiation and frictional heating. The two-dimensional boundary layer momentum and energy equations are converted to self-similar equations using similarity transformations. The set of resultant ordinary differential equations are solved numerically. The numerical results obtained from solutions of dimensionless momentum and energy equations are used to calculate the entropy generation number and Bejan number. The velocity profile $f\text{'}\left(\xi \right)$, temperature distribution $\theta \left(\xi \right)$, entropy production number $Ns$ and Bejan number $Be$ are plotted against the physical flow parameters and are discussed in detail. Further, for the sake of validation of our numerical code, the obtained results are reproduced using Matlab built-in boundary value solver bvp4c resulting in an excellent agreement. It is observed that entropy generation is increasing function of heating parameter, Prandtl number, Eckert number and radiation parameter. Further, it is observed that entropy generation can be minimized by reducing the operating temperature $\Delta T=T_w-T_{\infty }$.

在本文中，我们对经典Blasius流进行了第二定律分析，考虑了非线性辐射和摩擦加热的影响。使用相似变换将二维边界层动量和能量方程转换为自相似方程。所得的一组常微分方程通过数值求解。从无量纲动量和能量方程的解中获得的数值结果用于计算熵产生数和Bejan数。速度剖面$F\text{'}（\xi ）$，温度分布 $\theta （\xi ）$，熵产生数 $ñs$ 和Bejan号 $乙Ë$相对于物理流量参数绘制了图表，并进行了详细讨论。此外，为了验证我们的数字代码，使用Matlab内置边界值求解器bvp4c复制了获得的结果，从而获得了很好的一致性。可以看出，熵的产生是加热参数，普朗特数，埃克特数和辐射参数的增加函数。此外，可以观察到，通过降低工作温度可以最大程度地减少熵产生。$\Delta Ť={Ť}_w-{Ť}_{\infty }$。