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Computational exploration for radiative flow of Sutterby nanofluid with variable temperature-dependent thermal conductivity and diffusion coefficient
Open Physics ( IF 1.8 ) Pub Date : 2020-12-29 , DOI: 10.1515/phys-2020-0216
Muhammad Sohail 1 , Umar Nazir 1 , Yu-Ming Chu 2, 3 , Hussam Alrabaiah 4, 5 , Wael Al-Kouz 6 , Phatiphat Thounthong 7
Affiliation  

Abstract This article addresses the effects of thermal radiation, stratification, and Joule heating for the flow of magnetohydrodynamics Sutterby nanofluid past over a stretching cylinder. The transport phenomenon of heat and mass are modeled under temperature-dependent thermal conductivity and diffusion coefficients, respectively. Moreover, traditional Fourier and Fick’s laws have been implemented in thermal and mass transport expressions. The governing model that consists of a set of coupled partial differential equations is converted into system of nonlinear coupled ordinary differential equations via suitable similarity transformations. The resulting set of expressions is analytically treated through an optimal homotopy scheme. The effects of different dimensionless flow parameters on the velocity, temperature, and concentration fields are illustrated through graphs. The patterns of skin friction coefficient, local Nusselt, and Sherwood numbers are examined via bar charts. The major outcome of the proposed study is that variable thermal conductivity decays the temperature and radiation raises the temperature of the system. Stratification parameters show the reverse behavior for temperature and concentration boundary layers. Shear rate-dependent rheology in view of Sutterby liquid has the ability to reduce the flow of fluid. Therefore, the ability of flow in rheology of Sutterby liquid becomes reduced. Consequently, layer of momentum boundary has increased with respect to parameter of Sutterby liquid.

中文翻译:

具有随温度变化的热导率和扩散系数的 Sutterby 纳米流体辐射流的计算探索

摘要 本文讨论了热辐射、分层和焦耳加热对磁流体动力学 Sutterby 纳米流体流过拉伸圆柱体的影响。热量和质量的传输现象分别在与温度相关的热导率和扩散系数下建模。此外,传统的傅立叶和菲克定律已在热和质量传输表达式中得到应用。由一组耦合偏微分方程组成的控制模型通过适当的相似变换转换为非线性耦合常微分方程组。得到的表达式集通过最佳同伦方案进行分析处理。不同无量纲流动参数对速度、温度、和浓度场通过图表说明。通过条形图检查皮肤摩擦系数、局部 Nusselt 和 Sherwood 数的模式。拟议研究的主要结果是可变热导率会降低温度,而辐射会提高系统的温度。分层参数显示温度和浓度边界层的相反行为。鉴于 Sutterby 液体具有减少流体流动的能力,剪切速率相关的流变学。因此,萨特比液体的流变流动能力降低。因此,相对于萨特比液体的参数,动量边界层增加了。拟议研究的主要结果是可变热导率会降低温度,而辐射会提高系统的温度。分层参数显示温度和浓度边界层的相反行为。鉴于 Sutterby 液体具有减少流体流动的能力,剪切速率相关的流变学。因此,萨特比液体的流变流动能力降低。因此,相对于萨特比液体的参数,动量边界层增加了。拟议研究的主要结果是可变热导率会降低温度,而辐射会提高系统的温度。分层参数显示温度和浓度边界层的相反行为。鉴于 Sutterby 液体具有减少流体流动的能力,剪切速率相关的流变学。因此,萨特比液体的流变流动能力降低。因此,相对于 Sutterby 液体的参数,动量边界层增加了。鉴于 Sutterby 液体具有减少流体流动的能力,剪切速率相关的流变学。因此,萨特比液体的流变流动能力降低。因此,相对于萨特比液体的参数,动量边界层增加了。鉴于 Sutterby 液体具有减少流体流动的能力,剪切速率相关的流变学。因此,萨特比液体的流变流动能力降低。因此,相对于萨特比液体的参数,动量边界层增加了。
更新日期:2020-12-29
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