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牛顿加热以及傅里叶定律和菲克定律对具有可变热源/热汇的拉伸圆柱上磁流体动力学含尘卡西 nanofluid 流动的影响。

Impact of Newtonian heating and Fourier and Fick's laws on a magnetohydrodynamic dusty Casson nanofluid flow with variable heat source/sink over a stretching cylinder.

作者信息

Ramzan Muhammad, Shaheen Naila, Chung Jae Dong, Kadry Seifedine, Chu Yu-Ming, Howari Fares

机构信息

Department of Computer Science, Bahria University, Islamabad, 44000, Pakistan.

Department of Mechanical Engineering, Sejong University, Seoul, 143-747, South Korea.

出版信息

Sci Rep. 2021 Jan 27;11(1):2357. doi: 10.1038/s41598-021-81747-x.

DOI:10.1038/s41598-021-81747-x
PMID:33504877
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7841187/
Abstract

The present investigation aims to deliberate the magnetohydrodynamic (MHD) dusty Casson nanofluid with variable heat source/sink and modified Fourier's and Fick's laws over a stretching cylinder. The novelty of the flow model is enhanced with additional effects of the Newtonian heating, activation energy, and an exothermic chemical reaction. In an exothermic chemical reaction, the energy of the reactants is higher than the end products. The solution to the formulated problem is attained numerically by employing the MATLAB software function bvp4c. The behavior of flow parameters versus involved profiles is discussed graphically at length. For large values of momentum dust particles, the velocity field for the fluid flow declines, whereas an opposite trend is perceived for the dust phase. An escalation is noticed for the Newtonian heating in the temperature profile for both the fluid and dust-particle phase. A comparison is also added with an already published work to check the validity of the envisioned problem.

摘要

本研究旨在探讨具有可变热源/热汇以及修正的傅里叶定律和菲克定律的磁流体动力学(MHD)含尘Casson纳米流体在拉伸圆柱面上的流动。牛顿加热、活化能和放热化学反应的附加效应增强了流动模型的新颖性。在放热化学反应中,反应物的能量高于终产物。通过使用MATLAB软件函数bvp4c对所提出问题的解进行数值求解。详细地以图形方式讨论了流动参数与相关剖面的关系。对于较大的动量尘埃颗粒值,流体流动的速度场下降,而尘埃相则呈现相反的趋势。在流体和尘埃颗粒相的温度剖面中,牛顿加热均出现上升。还与已发表的工作进行了比较,以检验所设想问题的有效性。

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