Porous fins due to high extended heat transfer surface are widely used in different engineering devices including heat exchangers, solar collectors, and chemical reactors. Location of these fins within the working area can be very manifold. Therefore, the present research deals with computational analysis of complicated porous fin influence on nanofluid flow and heat transfer within the heated/cooled cabinet where one vertical wall is kept at non-uniform sinusoidal temperature. The considered fin consists of the mounted porous part at the bottom adiabatic wall and inner porous zone. Investigation has been performed using the boundary-value problem for the partial differential equations formed on the basis of the conservation laws using the experimentally-based correlations for thermal properties of nanofluid. Employing the finite difference techniques the useful results have been obtained illustrating an impact of the inner porous part penetration, location of this part and nanoparticles concentration. It has been ascertained that vertical position and penetration of internal porous block can be efficacious characteristics for the heat transfer augmentation. Moreover, an addition of alumina nanoparticles suppresses the heat transfer and convective flow.

由于高扩展传热表面的多孔翅片被广泛用于不同的工程设备，包括热交换器、太阳能集热器和化学反应器。这些翅片在工作区域内的位置可以多种多样。因此，本研究涉及复杂多孔翅片对加热/冷却柜内纳米流体流动和传热的影响的计算分析，其中一个垂直壁保持非均匀正弦温度。所考虑的翅片由安装在底部绝热壁和内部多孔区的多孔部分组成。已经使用基于守恒定律形成的偏微分方程的边值问题进行了研究，该偏微分方程使用基于实验的纳米流体热特性相关性。使用有限差分技术，已经获得了有用的结果，说明了内部多孔部件的渗透、该部件的位置和纳米粒子浓度的影响。已经确定，内部多孔块的垂直位置和渗透可以是增强传热的有效特征。此外，氧化铝纳米颗粒的添加抑制了传热和对流。