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首页> 外文期刊>International Journal of Heat and Mass Transfer >A comprehensive review on Theological behavior of mono and hybrid nanofluids: Effective parameters and predictive correlations
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A comprehensive review on Theological behavior of mono and hybrid nanofluids: Effective parameters and predictive correlations

机译：单和混合纳米流体的神学行为的全面综述：有效参数和预测相关性

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摘要

Nanoparticles are an evolution in improving heat transfer by fluids that have the good potential for heat transfer. Thus, in the last two decades, interest in researching them has increased dramatically. It has been proved that the thermophysical properties of nanofluids are different from those of common fluids. One of these properties is viscosity, which has a significant contribution to the calculation of the fluid heat transfer. In the present study, a brief introduction of nanofluid and its applications have been discussed in the first. Then, the classical equations suggested for predicting the viscosity of nanofluids and their accuracy have been reviewed. The role of effective parameters on the nanofluid viscosity has also been reported, indicating an increase in the viscosity of the common fluids by increasing the nano-additives volume fraction and reducing it with increasing temperature. For the effect of increasing nano-additives size, different results (decreasing or increasing) on fluid viscosity have been reported. The effect of changing the type of nano-additives has also been described for a variety of metal/metal oxides nanoparticles, and nanomaterial extracted from nature. In addition, nanofluids made with carbon nanotubes are described according to the high heat transfer coefficient. Finally, the introduction of hybrid nanofluid and their comparison with mono nanofluids has been explained by the conclusion that hybrid nanofluids can well cover nanofluid weaknesses and improve its strengths.
机译：纳米粒子是通过改善具有良好传热潜力的流体进行传热的一种演进。因此，在过去的二十年中，研究它们的兴趣急剧增加。已经证明纳米流体的热物理性质不同于普通流体的热物理性质。这些特性之一是粘度，它对流体传热的计算有很大的贡献。在本研究中，首先讨论了纳米流体及其应用的简要介绍。然后，经典方程建议用于预测纳米流体的粘度及其准确性。还已经报道了有效参数对纳米流体粘度的作用，这表明通过增加纳米添加剂的体积分数并随着温度的升高而降低普通流体的粘度。对于增加纳米添加剂尺寸的影响，已经报道了对流体粘度的不同结果（减小或增加）。还已经针对各种金属/金属氧化物纳米颗粒以及从自然界提取的纳米材料描述了改变纳米添加剂类型的效果。另外，根据高传热系数描述了由碳纳米管制成的纳米流体。最后，混合纳米流体的引入及其与单纳米流体的比较已经得到了以下结论：混合纳米流体可以很好地覆盖纳米流体的弱点并提高其强度。

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