Coherent Vortex Simulation of Flapping Flight in Turbulence

湍流中扑动飞行的相干涡模拟

• 批准号: 529979103
• 负责人: Dr.-Ing. Mathias Lemke
• 金额: --
• 依托单位: Centre de Mathématiques et dInformatique
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/529979103?language=en
• 关键词: Coherent; Vortex; Simulation; Flapping; Flight

The aerodynamics of flapping flight is an interdisciplinary multiphysics and multiscale problem, which makes it a challenge for numerical simulations. It involves the physical fields of fluid- and solid mechanics in close interaction with one another, and the flow field involves a multitude of active scales across several orders of magnitude. This multiscale character calls for suitable numerical methods: we propose coherent vorticity simulation in this proposal. The coupling between solid and fluid calls for special treatment as well, for which we suggest to extend the volume penalization method. Besides an improved convergence and lowered numerical cost, this opens the door for new applications such as insect aeroacoustics. It is also a prerequisite for employing reinforcement learning. We will use this machine learning technique to obtain the first virtual animal capable of flying stably in turbulence.

扑翼飞行的空气动力学是一个跨学科的多物理场、多尺度问题，对数值模拟提出了挑战。它涉及流体和固体力学的物理场，这些物理场彼此密切相互作用，并且流场涉及跨越几个数量级的大量活动尺度。这种多尺度特性要求合适的数值方法：我们提出相干涡模拟在这个建议。对于固液耦合问题也需要特殊处理，为此我们建议扩展体积惩罚法。除了改进收敛性和降低数值成本外，这为昆虫航空声学等新应用打开了大门。这也是采用强化学习的先决条件。我们将使用这种机器学习技术来获得第一个能够在湍流中稳定飞行的虚拟动物。