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首页> 外文期刊>Journal of Nanofluids >Entropy Generation Analysis of Radiated Magnetohydrodynamic Flow of Carbon Nanotubes Nanofluids with Variable Conductivity and Diffusivity Subjected to Chemical Reaction
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Entropy Generation Analysis of Radiated Magnetohydrodynamic Flow of Carbon Nanotubes Nanofluids with Variable Conductivity and Diffusivity Subjected to Chemical Reaction

机译：熵产生辐射的分析碳纳米管的磁流体动力流与变量电导率和纳米流体扩散系数进行化学反应

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摘要

The purpose of this article is to analyze the entropy generation and heat and mass transfer of carbon nanotubes (CNTs) nanofluid by considering the applied magnetic field under the influence of thermal radiation, variable thermal conductivity, variable mass diffusivity, and binary chemical reaction with activation energy over a linearly stretching cylinder. Convective boundary conditions on heat and mass transfer are considered. An isothermal model of homogeneous-heterogeneous reactions is used to regulate the solute concentration profile. It is assumed that the water-based nanofluid is composed of single and multi-walled carbon nanotubes. Employing a suitable set of similarity transformations, the system of partial differential equations is transformed into the system of nonlinear ordinary differential equations before being solved numerically. Through the implementation of the second law of thermodynamics, the total entropy generation is calculated. In addition, entropy generation for fluid friction, mass transfer, and heat transfer is discussed. This study is specially investigated for the impact of the chemical reaction, and activation energy with entropy generation subject to distinct flow parameters. It is found that the slip parameters greatly influence the flow characteristics. Fluid temperature is elevated with higher radiation parameters and thermal Biot number. Entropy and Bejan number are found to be an increasing function of solid volume fraction, magnetic field, and curvature parameters. Binary chemical reaction and activation energy on concentration profile have opposite effects.
机译：本文的目的是分析熵产生和传热传质碳纳米管nanofluid通过考虑应用磁场的影响下热辐射,可变热导率,变质量扩散率和二元化学在线性反应活化能拉伸油缸。在传热传质条件考虑。用于homogeneous-heterogeneous反应调节溶质浓度剖面。假定水性nanofluid单身,多壁碳组成纳米管。转换,系统部分微分方程转化为非线性常微分系统方程的数值求解。通过第二定律的实现热力学,总熵产生计算。流体摩擦、传质和传热进行了探讨。研究化学的影响反应,活化能与熵一代不同的流动参数。发现滑参数影响流动特性。较高的温度升高的辐射参数和热毕奥数。Bejan发现数量不断增加固体体积分数的函数,磁性场,和曲率参数。反应活化能和浓度配置文件有相反的效果。

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