Abstract Analysis are made to find the heat transfer characteristics and skin friction for two-dimensional oblique stagnation point flow of SWCNTs and MWCNTs based nanofluid flowing over a curved surface. Similarity transformations convert the governing flow field equations into a pair of non-linear ordinary differential equations, and then they are numerically solved through bvp4c function in MATLAB. The inspection of the obtained result reveals that SWCNTs based nanofluid have comparatively higher rate of heat transfer and skin friction then MWCNTs based nanofluid, which are due to their dissimilar values of densities. Moreover, in the case of flat surface (K = ∞) maximum amount of heat is transferred compared to the curved surface. The velocity distribution tends to decrease as we approach from curved to flat surface. Further, the Nusselt number provides higher values for SWCNTs case when solid fraction of nanoparticles enhances. Finally, the comparison of the current numerical results with the published literature in a limiting case is given and found to be in an excellent agreement.

中文翻译：

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CNTs-水纳米流体在曲面上的传热对比研究

摘要 分析了单壁碳纳米管和多壁碳纳米管基纳米流体在曲面上流动时二维斜驻点流动的传热特性和表面摩擦力。相似变换将控制流场方程转换为一对非线性常微分方程，然后通过MATLAB中的bvp4c函数对其进行数值求解。对所得结果的检查表明，基于 SWCNT 的纳米流体比基于 MWCNT 的纳米流体具有相对较高的传热率和皮肤摩擦，这是由于它们的密度值不同。此外，在平面 (K = ∞) 的情况下，与曲面相比，传递的热量最大。当我们从弯曲表面接近平坦表面时，速度分布趋于降低。更多，当纳米粒子的固体分数增加时，努塞尔数为 SWCNT 的情况提供了更高的值。最后，给出了当前数值结果与极限情况下已发表文献的比较，发现它们非常一致。