Computational modeling of hybrid micropolar nanofluid flow over a solid sphere
Computational modeling of hybrid micropolar nanofluid flow over a solid sphere
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DOI：
10.1016/j.jmmm.2023.170444
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发表时间：
2023-01-31
影响因子：
2.7
通讯作者：
Younis, Obai
中科院分区：
文献类型：
--
作者：
Alkasasbeh, Hamzeh T.;Al Faqih, Feras M.;Younis, Obai
目前的研究讨论了混合对流边界层周围的等温固体球利用数值模拟，两种流体类型的混合和单微极纳米流体在MHD领域的恒定壁温进行了检查。为了改善基础流体的热物理、光学、流变和形态品质，将两种不同类型的纳米颗粒氧化铜CuO和氧化石墨（GO）组合以产生混合纳米流体。通过敏感性分析，揭示了混合对流因子、磁场强度和微旋转因子的影响。结果表明，利用诱导微旋转效应的NF的改善效果是在较低的角度更加突出，并在较高的角度减弱。可以得到的另一点是，热边界层厚度与磁参数成正比;通过将M值从0.5增加到2，热边界层厚度从1.4增加到1.8。此外，使用混合而不是单NF对改变角速度aty > 4几乎没有影响;对于其他（y < 4），差异为
The current study discusses the mixed convection boundary layer around an isothermal solid sphere utilizing numerical simulation; two fluid types of hybrid and mono micropolar nanofluids with constant wall temperature in an MHD field are examined. To improve a base fluid's thermophysical, optical, rheological, and morphological qualities, two different types of nanoparticles Copper oxide CuO and Graphite oxide (GO) are combined to create hybrid nanofluids. The sensitivity analysis was made to unveil the impacts of the mixed convection factor, the field strength and the micro-rotation factor. The results reveal that the improving effect of using NF by the induced micro-rotational effect is more prominent at lower angles and diminished at higher angles. Another point that could be obtained is that the thermal boundary layer thickness is directly proportional to the magnetic parameter; by increasing the M value from 0.5 to 2, the thermal boundary layer thickness increases from 1.4 to 1.8. Also, using hybrid instead of mono NF has nearly no effect on altering the angular velocity aty > 4; for other ones (y < 4), the difference is