围绕联合形态化的前端和后端翼翼的短暂流动的数值模拟
Musavir Bashir1, Mir Hossein Negahban1, Ruxandra Mihaela Botez1
1Research Laboratory in Active Controls, Avionics and Aeroservoelasticity (LARCASE), Department of Systems Engineering, École de Technologie Supérieure, 1100 Notre-Dame West, Montreal, QC H3C1K3, Canada.
Biomimetics (Basel, Switzerland)
|February 23, 2024
概括
本研究介绍了用于主动流量控制的联合形态领尖和尾尖 (CoMpLETE) 技术. 仿生灵感设计有效地减轻了流量分离,并通过动态调整气翼形状来增强起重.
科学领域:
- 流体动力学 流体动力学
- 空气动力学 航空动力学
- 生物电子学 生物电子学
背景情况:
- 积极的流量控制对于管理空气动力学性能至关重要,特别是防止流量分离.
- 现有的方法往往侧重于单个控制面,限制了协同作用的潜力.
- 生物灵感为动态流量管理提供了新的策略.
研究的目的:
- 提出和评估用于主动流量控制的联合形态化领尖和尾尖 (CoMpLETE) 技术.
- 为了研究 morphing 领先和尾随边缘在流量分离控制上的协同效应.
- 为了分析动态变形的气形状的空气动力学性能,灵感来自于海豚和鱼的运动.
主要方法:
- 开发一个参数化模型,用于一个变形的气形翼,具有可变的曲率.
- 使用过渡式SST (切割应力传输) 模型来模拟流体现象.
- 对空气动力学力,速度流线和旋流轮的实验性评估.
- 调查各种变形参数:位置,振幅,开始时间和频率.
主要成果:
- CoMpLETE技术有效地减少了不利的压力梯度,防止了大量的流量分离.
- 空气凸的动态调整会导致流量重新连接,并增加最大提升系数 (cl,max).
- 与单个控制器相比,前端和后端的协同变形显示出在减轻流量分离方面具有重大潜力.
结论:
- CoMpLETE技术为主动流量控制提供了一个有前途的综合方法.
- 气翼边缘的动态变形显著提高了空气动力学性能,特别是升力.
- 仿生灵感设计为复杂的流量管理挑战提供了有效的解决方案.
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