The flow and heat transfer fields of a nanofluid within V-shaped cavity are analyzed using the incompressible smoothed particle hydrodynamic (ISPH) scheme. Novel studies on a nanofluid-occupied V-shaped cavity with a partial layer heterogeneous porous medium were conducted. The bottom and top corners of the V-shaped enclosure have isothermal conditions while the remaining boundaries are considered adiabatic. Lengths of the heated and cold parts are assumed to be variables. The flow domain is filled with a partial layer porous medium. Three levels of the porous medium are taken into account, namely, horizontal heterogeneous, vertical heterogeneous and homogeneous porous media. Impacts of the wide ranges of the hot–cold partitions lengths $L_p$ ($0.2\le L_p\le 1.5)$, the nanoparticles volume fraction ($0\%\le \varphi \le 5\%)$, the Darcy number (${10}^{-2}\le Da\le {10}^{-5}$) and the Rayleigh number (${10}^3\le Ra\le {10}^5$) on the features of the temperature and nanofluid flow are examined. The main outcomes disclosed that the average Nusselt number takes its maximum in case of the horizontal heterogeneous porous medium while the homogeneous porous medium case gives the lowest rate of the heat transfer. Therefore, for V-shaped cavity, the horizontal heterogeneous porous medium considers the best case of porous media. An augmentation on Rayleigh number rises the buoyancy force and accordingly the convective transport is enhanced. Further, the convective flow is enhanced as the hot–cold partitions lengths increase, regardless the porous case.

使用不可压缩平滑粒子流体动力学 (ISPH) 方案分析 V 形腔内纳米流体的流动和传热场。对具有部分层异质多孔介质的纳米流体占据的 V 形腔进行了新的研究。V 形外壳的底角和顶角具有等温条件，而其余边界被认为是绝热的。加热部件和冷部件的长度被假定为变量。流域填充有部分层多孔介质。考虑了多孔介质的三个层次，即水平非均质、垂直非均质和均质多孔介质。冷热分区长度范围大的影响${升}_{磷}$ ($0.2\le {升}_{磷}\le 1.5)$, 纳米粒子的体积分数 ($0\%\le \phi \le 5\%)$, 达西数 (${10}^{——2}\le D\mathrm{一种}\le {10}^{——5}$) 和瑞利数 (${10}^3\le \mathrm{电阻}\mathrm{一种}\le {10}^5$) 对温度和纳米流体流动的特征进行了检查。主要结果表明，在水平非均质多孔介质的情况下，平均努塞尔数取最大值，而均质多孔介质的情况下，传热速率最低。因此，对于 V 型腔，水平非均质多孔介质考虑了多孔介质的最佳情况。瑞利数的增加会增加浮力，从而增强对流传输。此外，无论多孔情况如何，随着热-冷分区长度的增加，对流都会增强。