Center of Excellence in Theoretical and Computational Science (TaCS-CoE), Faculty of Science, King Mongkut's University of Technology Thonburi (KMUTT), 126 Pracha Uthit Rd., Bang Mod, Thung Khru, Bangkok, 10140, Bangkok, Thailand.
Department of Basic Sciences, College of Science and Theoretical Studies, Saudi Electronic University, Riyadh, Saudi Arabia.
Sci Rep. 2021 Jun 18;11(1):12865. doi: 10.1038/s41598-021-92186-z.
In this investigation, heat transportation together with irreversibility analysis for the flow of couple stress hybrid nanofluid past over a stretching surface is considered. The innovative characteristics and aims of this work are to note that the transportation heat couple stress model involves EMHD, viscous dissipation, Joule heating, and heat absorption, and omission. The hybrid nanofluid is prepared due to the suspension of the solid nanoparticles of the SWCNTs and MWCNTs in pure human blood. This mathematical model is an appropriate model for biological advantages including testing of human blood for drug deliveries to various parts of the human body. Particularly, the Prandtl number used for the blood is 21 and very large as compared to the other base fluids. Necessary modifications are used to translate the defining partial differential equations and boundary conditions into a layout that can be computed. To obtain mathematical approximations for the resulting scheme of nonlinear differential equations, the innovative homotopy analysis method (HAM) is used. The explanation for velocity, energy, and entropy are exposed and the flow against various influential factors ([Formula: see text]) is discussed graphically. The numerical values are calculated and summarized for dimensionless [Formula: see text] In addition, the current study is compared for various values of [Formula: see text] to that published literature and an impressive agreement in terms of finding is reported. It has also been noticed that the [Formula: see text] and [Formula: see text] factors retard the hybrid nanofluid flow, while the temperature of fluid becomes upsurges by the rise in these factors. 11.95% enhancement in the heat transfer rate has been attained using the hybrid nanofluids.
在本研究中，考虑了传热以及对具有偶应力的混合纳米流体在拉伸表面上流动的不可逆性分析。这项工作的创新特点和目标是指出，传输热偶应力模型涉及到 EMHD、粘性耗散、焦耳加热和热吸收以及省略。混合纳米流体是由于将 SWCNTs 和 MWCNTs 的固体纳米颗粒悬浮在纯人血中而制备的。这个数学模型是一种适合生物优势的模型，包括对人血进行测试，以将药物输送到人体的各个部位。特别是，用于血液的 Prandtl 数为 21，与其他基础流体相比非常大。需要进行必要的修改，以便将定义的偏微分方程和边界条件转换为可以计算的格式。为了获得非线性微分方程的所得方案的数学近似，使用了创新的同伦分析方法（HAM）。速度、能量和熵的解释以及对各种影响因素（[公式：见文本]）的流动进行了图形讨论。计算并总结了无量纲[公式：见文本]的数值。此外，还将当前研究与已发表文献中各种[公式：见文本]值进行了比较，报告了在发现方面的令人印象深刻的一致性。还注意到，[公式：见文本]和[公式：见文本]因素会阻碍混合纳米流体的流动，而这些因素的上升会使流体温度升高。使用混合纳米流体可将传热速率提高 11.95%。
