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Semianalytical solution of axisymmetric flows of Cu- and Ag-water nanofluids between two rotating disks

机译：两个旋转盘之间Cu-和Ag水纳米流体轴对称流动的半阳性溶液

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摘要

Present study analyses the axisymmetric flows of copper- and silver-water nanofluids between two rotating disks in the presence of Hartmann number, porous medium, and drag coefficient. Effect of thermal radiation enriches the study as well. In addition to that, the coupling parameter and the Eckert number appear because of the inclusion of viscous dissipation in energy equation. The well-posed transformations are used to transform the governing equation into ordinary and semianalytical procedure, that is, Adomain Decomposition method is used to solved these coupled ODEs. The surface and contour plots for the velocity profiles of both Cu- and Ag-water nanofluids for the effect of physical parameters such as solid volume fraction, drag coefficient, and Reynolds number are obtained and presented in graphs. Also, the behavior of other pertinent parameters characterizes the flow phenomena on the nanofluid velocity and temperature are presented through graphs. The numerical computation of skin friction and Nusselt number are obtained and presented through tables. For the validity, the present results show a good agreement with earlier studies. The major findings of this study are as follows: an increase in solid volume fraction, a resistive force like drag opposes the velocity of the nanofluid, whereas Eckert number enhances the fluid temperature significantly.
机译：本研究分析了在Hartmann号，多孔介质和拖曳系数存在下两个旋转盘之间的铜和银纳米流体的轴对称流动。热辐射的影响也丰富研究。除此之外，耦合参数和Eckert号由于能量方程中的粘性耗散而出现。良好的变换用于将控制方程转化为普通和半衰老程序，即Adomain分解方法用于解决这些耦合的杂波。用于诸如固体体积分数，拖曳系数和雷诺数的物理参数的Cu-和Ag水纳米流体的速度曲线的表面和轮廓图，并呈现在图中。而且，其他相关参数的行为表征了纳米流体速度和温度的流动现象通过图表。通过表获得并呈现皮肤摩擦和泡沫数量的数值计算。对于有效性，目前的结果表明与早期研究吻合一致。本研究的主要发现如下：固体体积分数的增加，像拖曳一样的电阻力相反，而Eckert数量显着增强流体温度。

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  • 来源
    《Heat transfer》 |2019年第3期|957-981|共25页
  • 作者

    B. C. Rout; S. R. Mishra; B. Nayak;

  • 作者单位

    Department of Mathematics Siksha "O" Anusandhan Deemed to be University Bhubaneswar Odisha India;

    Department of Mathematics Siksha "O" Anusandhan Deemed to be University Bhubaneswar Odisha India;

    Department of Mathematics Siksha "O" Anusandhan Deemed to be University Bhubaneswar Odisha India;

  • 收录信息 美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    axisymmetric flow; nanofluids; rotating disk; semianalytical procedure;

    机译：轴对称流动;纳米流体;旋转磁盘;半杀虫程序;

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