Reduced-Order Aerodynamic Modeling of Flapping Wing Energy Harvesting at Low Reynolds Number
Reduced-Order Aerodynamic Modeling of Flapping Wing Energy Harvesting at Low Reynolds Number
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DOI：
10.2514/1.j052364
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发表时间：
2013-12
期刊：
影响因子：
2.5
通讯作者：
M. Bryant;J. Gómez;Ephrahim Garcia
中科院分区：
文献类型：
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作者：
M. Bryant;J. Gómez;Ephrahim Garcia
使用扑翼和扑动的气动弹性结构从流动流体中获取能量作为传统旋转涡轮机的可能替代方案最近获得了显著的研究关注，特别是在厘米级和厘米级以下。一种有前途的方法是利用气动弹性颤振不稳定性来驱动柔性压电能量收集结构的极限环振荡。这样的系统非常适合小型化，并且可以用于在环境流量可用的任何地方创建自供电无线传感器。在本文中，我们研究建模的气动力，功率提取，和效率，这样的扑翼能量采集器在低雷诺数的顺序为1000。两种建模方法被认为是：一个准定常的方法从现有的昆虫飞行模型和修改后的模型，包括条款占动态失速的影响。将这两种建模方法应用于某型飞机的瞬态气动力预测。
Energy harvesting from flowing fluids using flapping wings and fluttering aeroelastic structures has recently gained significant research attention as a possible alternative to traditional rotary turbines, especially at and below the centimeter scale. One promising approach uses an aeroelastic flutter instability to drive limit cycle oscillations of a flexible piezoelectric energy harvesting structure. Such a system is well suited to miniaturization and could be used to create self-powered wireless sensors wherever ambient flows are available. In this paper, we examine modeling of the aerodynamic forces, power extraction, and efficiency of such a flapping wing energy harvester at a low Reynolds number on the order of 1000. Two modeling approaches are considered: a quasi-steady method generalized from existing models of insect flight and a modified model that includes terms to account for the effects of dynamic stall. These two modeling approaches are applied to predicting the instantaneous aerodynamic for...