纳米流体通过垂直板的MHD辐射边界层流动,具有内部热产生/吸收、粘性和欧姆耗散效应

B. Ganga , S. Mohamed Yusuff Ansari , N. Vishnu Ganesh , A.K. Abdul Hakeem
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引用次数: 50

摘要

采用数学分析方法研究了内部热产生/吸收、粘性和欧姆耗散对粘性、不可压缩、导电纳米流体在垂直板上的二维辐射MHD边界层稳定流动的影响。将控制非线性偏微分方程系统通过适当的相似变换转化为非线性偏微分方程集合,然后用HAM进行解析求解,用射击法进行四阶龙格-库塔积分格式进行数值求解。讨论了不同控制参数对无量纲速度、温度和纳米颗粒体积分数分布的影响。对简化的Nusslet数和局部Sherwood数也进行了图解讨论。研究发现,黏性耗散、热生成和磁场的存在加速了温度的升高,减慢了纳米固体体积分数分布。并与一个特殊情况下的基准解进行了比较,得到了很好的一致性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
MHD radiative boundary layer flow of nanofluid past a vertical plate with internal heat generation/absorption, viscous and ohmic dissipation effects

A mathematical analysis has been carried out to investigate the effects of internal heat generation/absorption, viscous and ohmic dissipations on steady two-dimensional radiative MHD boundary-layer flow of a viscous, incompressible, electrically conducting nanofluid over a vertical plate. A system of governing nonlinear PDEs is converted into a set of nonlinear ODEs by suitable similarity transformations and then solved analytically using HAM and numerically by the fourth order Runge–Kutta integration scheme with shooting method. The effects of different controlling parameters on the dimensionless velocity, temperature and nanoparticle volume fraction profiles are discussed graphically. The reduced Nusslet number and the local Sherwood number are also discussed graphically. It is found that the presence of viscous dissipation, heat generation and magnetic field accelerates the temperature and decelerates the nanosolid volume fraction profile. Furthermore, comparisons have been made with bench mark solutions for a special case and obtained a very good agreement.

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