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首页> 外文期刊>International Journal of Thermal Sciences >Cooling enhancement of two fins in a horizontal channel by nanofluid mixed convection
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Cooling enhancement of two fins in a horizontal channel by nanofluid mixed convection

机译：纳米流体混合对流增强水平通道中两个散热片的冷却

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摘要

This paper presents a numerical study of the thermal performance of two fins mounted on the bottom wall of a horizontal channel and cooled with either pure water or a Cu-water nanofluid. The bottom wall of the channel is heated at a constant temperature and cooled by mixed convection of laminar flow at a relatively low temperature. The top wall is adiabatic. The effects of pertinent parameters such as the Reynolds and Richardson numbers, the solid volume fraction, and the distance and the thermal conductivity of the fins on their thermal performance are studied. The results of the numerical simulation indicate that the heat transfer rate of fins is significantly affected by the distance and the thermal conductivity of the fins. The influence of the solid volume fraction on the increase of heat transfer is more noticeable at higher values of the Reynolds number. The fins behave differently in terms of their thermal performances at higher values of the Reynolds number.
机译：本文对两个安装在水平通道底壁并用纯水或铜水纳米流体冷却的散热片的热性能进行了数值研究。通道的底壁在恒定温度下加热，并在相对较低的温度下通过层流的混合对流进行冷却。顶壁是绝热的。研究了相关参数（如雷诺数和理查森数），固体体积分数，散热片的距离和导热率对散热性能的影响。数值模拟结果表明，翅片的传热速率受翅片的距离和导热率的影响较大。在较高的雷诺数下，固体体积分数对传热增加的影响更为明显。在较高的雷诺数下，散热片的热性能会有所不同。

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