A study on a flexible wing with up–down vibration in a pulsating flow of cooling air to improve heat transfer efficiency
A study on a flexible wing with up–down vibration in a pulsating flow of cooling air to improve heat transfer efficiency
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DOI：
10.1007/s00231-013-1188-x
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发表时间：
2013-06
影响因子：
2.2
通讯作者：
Kihong Park;J. Min;Jin-Kyu Kim;Sang-hu Park;M. Ha
中科院分区：
文献类型：
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作者：
Kihong Park;J. Min;Jin-Kyu Kim;Sang-hu Park;M. Ha
我们研究了一种柔性机翼，它可以通过在加热表面上平稳振动来起到折叠风扇的作用，以及这种振动对传热的影响。针对机翼在脉动流场中的柔性上下振动问题，提出了一种具有较大机身和较窄连接腿的新型毫米级柔性机翼外形。形状经过优化，使得在低气流下其变形变得更大。我们进行了双向流固耦合分析，以预测性能，并进行了实验验证。定性地总结了流动、传热和结构变形的细节。计算结果表明，单柔性翼的传热系数比平板的传热系数高11.3%。
We investigated a flexible wing that can function as a folding fan by vibrating smoothly on a heated surface, and the effects of this vibration on heat transfer. For flexible up–down vibrations of the wing in a pulsating flow, we propose a novel milli-scale flexible wing shape with a relatively large body and a narrow connecting leg. The shape was optimized such that its deformation became much larger at a low air flow. We performed two-way fluid–structure interaction analyses to predict performance, and an experimental validation was also conducted. The details of flow, heat transfer, and structural deformation are summarized qualitatively. Our results show that the heat transfer coefficient of a heated surface with a single flexible wing was approximately 11.3 % greater than that of a flat plate.