Thermal performance of unsteady mixed convective Ag/MgO nanohybrid flow near the stagnation point domain of a spinning sphere
Thermal performance of unsteady mixed convective Ag/MgO nanohybrid flow near the stagnation point domain of a spinning sphere
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DOI：
10.1016/j.icheatmasstransfer.2022.106019
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发表时间：
2022-04-08
影响因子：
7
通讯作者：
Badruddin, I. A.
中科院分区：
文献类型：
--
作者：
Acharya, N.;Mabood, F.;Badruddin, I. A.
混合对流的旋转球体是巨大的兴趣，在几个工业和工程应用开始从聚合物沉积，电解管理，药物运输，自旋稳定的导弹，冷却的纺纱机切片等混合纳米流体表现出有前途的效率相比，单纳米流体的热传输。它们被广泛引入核电站，太阳能集热器，热交换器，微流体散热器等独特的有前途的应用功能驱动本调查分析磁化混合对流不稳定的Ag/MgO-水混合纳米流体流在一个旋转的球体附近的停滞区。此外，纳米流体的运动被视为热辐射。最重要的流动剖面使用适当的相似性转换无量纲。与边界约束相关联的更新的方程进行了数值处理。几个示意图被提取来侦察必要的值得注意的影响，热，速度，热传输，和皮肤摩擦的档案上的流动参数。结果表明，在x方向上的速度的不稳定性参数和单纳米流体表现出更高的速度相比，混合纳米流体的增加，而相反的检测到的z方向的速度。热增强是保证辐射参数和纳米颗粒浓度，其中混合纳米流体说明了更高的幅度。与通常的纳米流体相比，混合纳米流体的热传输也更高。
Mixed convective flow over a revolving sphere is of immense interest in several industrial and engineering applications starting from polymer deposition, electrolysis management, drug transport, spin-stabilized missiles, cooling of spinning machinery slices, etc. Hybrid nanofluid exhibits promising efficiency in heat transport compared to mono nanofluid. They are widely introduced in nuclear power plants, solar collectors, heat exchangers, microfluidic heat sinks, etc. Such unique promising applicative features drive this investigation to analyse the magnetized mixed convective unsteady Ag/MgO-water hybrid nanofluid stream over a whirling sphere near the stagnation zone. Moreover, the nanofluid motion is treated as thermally radiative. The foremost flow profiles are made dimensionless using appropriate similarity translation. The renovated equations associated with the boundary restrictions are treated numerically. Several schematics are extracted to reconnoiter the requisite noteworthy influence of flow parameters on thermal, velocity, heat transport, and skin frictional profiles. Consequences indicate the increase in x-direction velocity for the unsteadiness parameter and mono nanofluid exhibits higher velocity compared to hybrid nanofluid, while the reverse is detected for z-direction velocity. Thermal enhancement is assured for radiation parameters and nanoparticle concentration, where hybrid nanofluid illustrates a higher magnitude. Heat transport is also higher for hybrid nanofluid compared to the usual nanofluid.