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索雷特-杜福尔效应在具有尘埃颗粒且渗透率介质中特性可变的三维卡森纳米流体流动中的影响。

Soret-Dufour impact on a three-dimensional Casson nanofluid flow with dust particles and variable characteristics in a permeable media.

作者信息

Shaheen Naila, Ramzan Muhammad, Alshehri Ahmed, Shah Zahir, Kumam Poom

机构信息

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

Department of Mathematics, Faculty of Sciences, King Abdulaziz University, Jeddah, 21589, Saudi Arabia.

出版信息

Sci Rep. 2021 Jul 15;11(1):14513. doi: 10.1038/s41598-021-93797-2.

DOI:10.1038/s41598-021-93797-2
PMID:34267264
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8282865/
Abstract

In this study, the effects of variable characteristics are analyzed on a three-dimensional (3D) dusty Casson nanofluid flow past a deformable bidirectional surface amalgamated with chemical reaction and Arrhenius activation energy. The surface is deformable in the direction of the x-axis and y-axis. The motion of the flow is induced due to the deformation of the surface. The impression of Soret and Dufour's effects boost the transmission of heat and mass. The flow is analyzed numerically with the combined impacts of thermal radiation, momentum slip, and convective heat condition. A numerical solution for the system of the differential equations is attained by employing the bvp4c function in MATLAB. The dimensionless parameters are graphically illustrated and discussed for the involved profiles. It is perceived that on escalating the Casson fluid and porosity parameters, the velocity field declines for fluid-particle suspension. Also, for augmented activation energy and Soret number, the concentration field enhances. An opposite behavior is noticed in the thermal field for fluctuation in fluid-particle interaction parameters for fluid and dust phase. Drag force coefficient increases on escalating porosity parameter and Hartmann number. On amplifying the radiation parameter heat and mass flux augments. A comparative analysis of the present investigation with an already published work is also added to substantiate the envisioned problem.

摘要

在本研究中，分析了可变特征对三维（3D）含尘Casson纳米流体流过与化学反应和阿累尼乌斯活化能合并的可变形双向表面的影响。该表面在x轴和y轴方向上是可变形的。流动的运动是由表面的变形引起的。索雷特效应和杜福尔效应的影响促进了热量和质量的传递。考虑热辐射、动量滑移和对流热条件的综合影响，对流动进行了数值分析。通过在MATLAB中使用bvp4c函数获得了微分方程组的数值解。对所涉及的剖面，以图形方式说明了无量纲参数并进行了讨论。可以看出，随着Casson流体和孔隙率参数的增加，流体-颗粒悬浮液的速度场下降。此外，对于增加的活化能和索雷特数，浓度场增强。对于流体和尘埃相的流体-颗粒相互作用参数的波动，在热场中观察到相反的行为。随着孔隙率参数和哈特曼数的增加，阻力系数增大。随着辐射参数的增加，热通量和质量通量增大。还对本研究与已发表的工作进行了对比分析，以证实所设想的问题。

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