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首页> 外文期刊>Journal of Materials Engineering and Performance >Effects of Particle Shape and Fluid Temperature on Heat-Transfer Characteristics of Nanofluids
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Effects of Particle Shape and Fluid Temperature on Heat-Transfer Characteristics of Nanofluids

机译：颗粒形状和流体温度对纳米流体传热特性的影响

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摘要

Molecular dynamics simulation has shown that the heat transfer during the collision of a cylindrical nanoparticle with a heat source under most favorable condition can be much higher than that for a spherical nanoparticle of identical volume. This can potentially result in higher enhancement in the thermal conductivity of a nanofluid containing elongated particles compared to the one containing spherical nanoparticle, as exhibited by the experimental data in the literature. Further, the theoretical study predicts an increase in the enhancement in thermal conductivity with temperature of the base fluid, which is supported by the present experimental data for water-based Cu_9Al_4-nanofluids.
机译：分子动力学模拟表明，在最有利的条件下，圆柱状纳米颗粒与热源发生碰撞时的传热比同等体积的球形纳米颗粒的传热要高得多。如文献中的实验数据所显示的，与包含球形纳米颗粒的纳米流体相比，这可以潜在地导致包含细长颗粒的纳米流体的热导率更高的提高。此外，理论研究预测，随着基础流体温度的增加，导热系数将增加，这由水基Cu_9Al_4-纳米流体的当前实验数据所支持。

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