虚拟物理框架揭示了高雷诺兹数的引振动"升"和"死亡"对于高雷诺兹数的悬崖体
Haojie Ren1,2,3, Shixiao Fu1,2,3, Mengmeng Zhang1,2,3
1State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200030, China.
Fundamental research
|February 6, 2026
概括
虚拟物理框架使引振动 (VIV) 的高雷诺德数研究成为可能. 观察到意想不到的VIV振幅,挑战现有理论并影响工程应用.
科学领域:
- 流体力学 流体力学 流体力学
- 流体结构相互作用 (FSI) 是一种流体结构相互作用.
- 实验物理实验物理学
背景情况:
- 引振动 (VIV) 是流体结构相互作用 (FSI) 中的一个关键现象.
- 由于实验约束,目前对VIV的理解仅限于较低的雷诺兹数 (Re).
- 在实验流体力学中,高-Re VIV 现象在很大程度上仍未被探索.
研究的目的:
- 引入虚拟物理框架 (VPF),用于对物理系统参数进行高保真控制.
- 为了应对研究高Re的VIV的实验挑战.
- 为了研究VIV进化在一个灵活安装的刚性气系统在高Re.
主要方法:
- 虚拟物理框架 (VPF) 的开发和应用.
- 集成数值学科和机械执行器用于系统控制.
- 虚拟化一个大型,灵活安装的刚性圆柱体系统,用于高Re测试.
主要成果:
- 在各种Re值中观察到VIV演变.
- 在Re ≈ 2.0E5记录了高达2.4 D的意想不到的VIV振幅,明显超过了先前的数据.
- 识别了突如其来的过渡到一个非振动状态在关键的Re.
- 由流体力驱动的能量消散和输入中的异步所导致的现象.
结论:
- VPF有效地克服了高Re VIV研究的实验限制.
- 观察到的VIV行为挑战了既有理论,并需要对工程设计进行重新评估.
- VPF提出了一种加速古典物理学科学发现的新方法.
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