Purpose

The purpose of this study is to investigate the Cattaneo-Christov double diffusion, multiple slips and Darcy-Forchheimer’s effects on entropy optimized and thermally radiative flow, thermal and mass transport of hybrid nanoliquids past stretched cylinder subject to viscous dissipation and Arrhenius activation energy.

Design/methodology/approach

The presented flow problem consists of the flow, heat and mass transportation of hybrid nanofluids. This model is featured with Casson fluid model and Darcy-Forchheimer model. Heat and mass transportations are represented with Cattaneo-Christov double diffusion and viscous dissipation models. Multiple slip (velocity, thermal and solutal) mechanisms are adopted. Arrhenius activation energy is considered. For graphical and numerical data, the bvp4c scheme in MATLAB computational tool along with the shooting method is used.

Findings

Amplifying curvature parameter upgrades the fluid velocity while that of porosity parameter and velocity slip parameter whittles down it. Growing mixed convection parameter, curvature parameter, Forchheimer number, thermally stratified parameter intensifies fluid temperature. The rise in curvature parameter and porosity parameter enhances the solutal field distribution. Surface viscous drag gets controlled with the rising of the Casson parameter which justifies the consideration of the Casson model. Entropy generation number and Bejan number upgrades due to growth in diffusion parameter while that enfeeble with a hike in temperature difference parameter.

Originality/value

To the best of the authors’ knowledge, this research study is yet to be available in the existing literature.

中文翻译：

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具有 Cattaneo-Christov 双扩散的混合纳米流体 Darcy-Forchheimer 输运熵生成的数值计算

目的

本研究的目的是研究 Cattaneo-Christov 双扩散、多重滑移和 Darcy-Forchheimer 对混合纳米液体经过受粘性耗散和 Arrhenius 活化能的拉伸圆柱体的熵优化和热辐射流动、热和质量传输的影响。

设计/方法/方法

所提出的流动问题包括混合纳米流体的流动、热量和质量传输。该模型具有 Casson 流体模型和 Darcy-Forchheimer 模型。热量和质量传输用 Cattaneo-Christov 双扩散和粘性耗散模型表示。采用多种滑移（速度、热和溶质）机制。考虑了阿伦尼乌斯活化能。对于图形和数值数据，使用 MATLAB 计算工具中的 bvp4c 方案以及拍摄方法。

发现

放大曲率参数会提高流体速度，而孔隙度参数和速度滑移参数会降低流体速度。不断增长的混合对流参数、曲率参数、Forchheimer 数、热分层参数加剧了流体温度。曲率参数和孔隙度参数的增加增强了溶质场分布。表面粘性阻力通过 Casson 参数的上升得到控制，这证明了考虑 Casson 模型是合理的。熵生成数和 Bejan 数由于扩散参数的增长而升级，而随着温差参数的增加而减弱。

原创性/价值

据作者所知，这项研究尚未在现有文献中提供。