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首页> 外文期刊>Applied Mathematical Modelling >Mixed convection heat transfer by nanofluids in a cavity with two oscillating flexible fins: A fluid-structure interaction approach
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Mixed convection heat transfer by nanofluids in a cavity with two oscillating flexible fins: A fluid-structure interaction approach

机译:纳米流体在具有两个振荡柔性翅片的腔中的混合对流传热:流固耦合方法

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摘要

This study investigated the effects of two oscillating fins on the heat transfer rate and flow characteristics of a nanofluid inside a square enclosure. Both fins were attached to the hot wall and both fins oscillated at the same frequencies and amplitudes. The finite element method implemented in the arbitrary Lagrangian-Eulerian (ALE) technique was used to solve the equations describing the interactions and movements of the nanofluid and fins. Comparisons of our results and those reported in previous studies demonstrated that the modeling and numerical investigations were valid and reliable. The results showed that the increase in the heat transfer rate was due to the oscillation of the fins. In addition, the increasing trend in the heat transfer rate due to the oscillating fins decreased as the ratio of the thermal conductivity of the fins relative to the nanofluid increased. Increasing the thermal conductivity and viscosity parameters enhanced and weakened the heat transfer rate, respectively.
机译:这项研究调查了两个振荡鳍片对方形外壳内部纳米流体的传热速率和流动特性的影响。两个鳍片都附着在热壁上,并且两个鳍片以相同的频率和幅度振荡。使用在任意拉格朗日-欧拉(ALE)技术中实施的有限元方法来求解描述纳米流体和鳍片相互作用和运动的方程。我们的结果与先前研究报告的结果进行比较表明,建模和数值研究是有效和可靠的。结果表明,传热速率的增加是由于翅片的振荡引起的。另外,由于鳍片的导热率相对于纳米流体的导热率的增加,由于鳍片的导热率的增加趋势减小。增大导热系数和粘度参数分别增强和减弱了传热速率。

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