Multiple-Fidelity Computational Framework for the Design of Efficient Flapping Wings
Multiple-Fidelity Computational Framework for the Design of Efficient Flapping Wings
复制标题
高效扑翼设计的多重保真度计算框架
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
P. Persson
中科院分区：
文献类型：
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作者：
D. Willis;P. Persson
提出了一种多保真度计算框架，用于设计能量有效的扑翼。这个设计过程的目标是实现特定的空气动力学特性，即在低能量成本下规定的升力和推力系数。机翼运动学（扑动频率、扑动幅度）和由此产生的最佳尾流环流分布（尾流环流/涡量强度和尾流形状）使用低阶、仅尾流、能量学方法来确定。一个准逆，双重网格方法被用来确定详细的扑翼几何形状对应的最佳唤醒。由于位流近似的效率，仅尾流方法和准逆双网格方法工具可以有效地研究大量的机翼运动学和机翼变形策略;然而，只有少数机翼设计在物理低雷诺数粘性流状态下达到所需的性能。因此，一种高阶的、不连续的.
A multiple-fidelity computational framework is presented for designing energetically efficient flapping wings. The goal of this design process is to achieve specific aerodynamics characteristics, namely prescribed lift and thrust coefficients at low energetic cost. The wing kinematics (flapping frequency, flapping amplitude) and the resulting optimal wake-circulation distribution (wake circulation/vorticity strength and wake shape) are determined using a low-order, wake-only, energetics method. A quasi-inverse, doublet-lattice method is used to determine the detailed flapping-wing geometry corresponding to the optimal wake. Because of the efficiency of potential flow approximations, the wake-only method and quasi-inverse, doublet-lattice method tools can explore a large number of wing kinematics and wing-morphing strategies efficiently; however, only a handful of those wing designs will achieve the desired performance in the physical low-Reynolds-number, viscous-flow regime. Thus, a high-order, discontinu...
影响因子：
64.8
作者：
Portugal, Steven J.;Hubel, Tatjana Y.;Usherwood, James R.
通讯作者：
Usherwood, James R.