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卡森纳米流体在径向拉伸薄板上流动时的磁流体动力学驻点。

Magnetohydrodynamic stagnation point on a Casson nanofluid flow over a radially stretching sheet.

作者信息

Narender Ganji, Govardhan Kamatam, Sreedhar Sarma Gobburu

机构信息

Department of Humanities and Sciences (Mathematics), CVR College of Engineering, Hyderabad, Telangana State, India.

Department of Mathematics, GITAM University, Hyderabad Campus, Telangana State, India.

出版信息

Beilstein J Nanotechnol. 2020 Sep 2;11:1303-1315. doi: 10.3762/bjnano.11.114. eCollection 2020.

DOI:10.3762/bjnano.11.114
PMID:32953374
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7476597/
Abstract

This article proposes a numerical model to investigate the impact of the radiation effects in the presence of heat generation/absorption and magnetic field on the magnetohydrodynamics (MHD) stagnation point flow over a radially stretching sheet using a Casson nanofluid. The nonlinear partial differential equations (PDEs) describing the proposed flow problem are reduced to a set of ordinary differential equations (ODEs) via suitable similarity transformations. The shooting technique and the Adams-Moulton method of fourth order are used to obtain the numerical results via the computational program language FORTRAN. Nanoparticles have unique thermal and electrical properties which can improve heat transfer in nanofluids. The effects of pertinent flow parameters on the nondimensional velocity, temperature and concentration profiles are presented. Overall, the results show that the heat transfer rate increases for higher values of the radiation parameter in a Casson nanofluid.

摘要

本文提出了一个数值模型，用于研究在存在热生成/吸收和磁场的情况下，辐射效应对使用Casson纳米流体的径向拉伸片上磁流体动力学（MHD）驻点流动的影响。通过适当的相似变换，将描述所提出流动问题的非线性偏微分方程（PDEs）简化为一组常微分方程（ODEs）。采用打靶技术和四阶亚当斯-莫尔顿方法，通过计算程序语言FORTRAN获得数值结果。纳米颗粒具有独特的热学和电学性质，可改善纳米流体中的传热。给出了相关流动参数对无量纲速度、温度和浓度分布的影响。总体而言，结果表明，对于Casson纳米流体中较高的辐射参数值，传热速率会增加。

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