This article is about the study of homogeneous and heterogeneous reactions in the mixed convection flow of hybrid nanofluid over a moving vertical slender cylinder. It is based on the considerations of unequal diffusivity of chemical species and the numerical solutions from the nonsimilar approach. This study has found applications in many chemically reacting processes, including the processes in the biochemical systems, combustion, and catalysis. Numerically approximate solutions to a set of equations, which govern the flow, temperature, and concentrations of the chemical species with prescribed boundary constraints, are obtained by utilizing the implicit finite-difference scheme aided by the quasi-linearization technique. The impacts of several relevant parameters on various profiles and gradients are discussed with the aid of graphs and tables. From the results, the skin friction coefficient and rate of heat transport are pronounced to be more for hybrid nanofluid than nanofluid. The strength of homogeneous reaction on species concentration is found to be fewer than the heterogeneous reaction. The streamwise coordinate (nonsimilar variable) is more favorable to the concentration of autocatalyst than to the reactant concentration.

中文翻译：

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混合纳米流体在细长圆柱体上的混合对流中的均相和异相反应

本文是关于在移动的垂直细长圆柱体上混合纳米流体的混合对流中的均相和非均相反应的研究。它是基于对化学物质的不等扩散率和非相似方法的数值解的考虑。这项研究已在许多化学反应过程中找到应用，包括生化系统、燃烧和催化中的过程。通过利用由准线性化技术辅助的隐式有限差分方案获得了一组方程的数值近似解，这些方程控制具有规定边界约束的化学物质的流量、温度和浓度。借助图表讨论了几个相关参数对各种剖面和梯度的影响。从结果来看，混合纳米流体的皮肤摩擦系数和热传输率明显高于纳米流体。发现均相反应对物种浓度的影响小于非均相反应。流向坐标（非相似变量）对自催化剂浓度比对反应物浓度更有利。