RESEARCH on CHAOTIC FEATURES of A FLOW FIELD over A PLUNGING AIRFOIL BASED on DYNAMIC MODE DECOMPOSITION

被引：0
|
作者：
Qi Y. [1 ]
Yang W. [1 ,2 ]
Wang Y. [1 ]
Song B. [1 ,3 ]
机构：
[1] School of Aeronautics, Northwestern Polytechnical University, Xi'an
[2] Research and Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen
[3] Yangtze River Delta Research, Institute of Northwestern Polytechnical University, Taicang
来源：
Journal of Theoretical and Applied Mechanics (Poland) | 2021年 / 59卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Chaotic flow; Dynamic mode decomposition; Irregularity; Plunging airfoil; Thrust characteristic;
D O I：
10.15632/JTAM-PL/134803
中图分类号：
学科分类号：
摘要：
Periodic motion of a plunging airfoil causes continuous changes in the surrounding flow field. The time-dependent thrust coefficient depends entirely on unsteady characteristics of the flow field. On the contrary, the time-dependent thrust coefficient may also reflect the unsteady characteristics of the corresponding flow field. With the fast Fourier transform (FFT) and dynamic mode decomposition (DMD), unsteady aerodynamic forces can be correlated with the flow field characteristics in the frequency domain. In the present paper, DMD is performed to analyze the unsteady characteristics of the flow field around a plunging NACA0012 airfoil at the Reynolds number of 20 000. © 2021 Polish Society of Theoretical and Allied Mechanics. All rights reserved.
引用
收藏
页码：293 / 305
页数：12
相关论文
共 50 条
  • [1] RESEARCH ON CHAOTIC FEATURES OF A FLOW FIELD OVER A PLUNGING AIRFOIL BASED ON DYNAMIC MODE DECOMPOSITION
    Qi, Yuhang
    Yang, Wenqing
    Wang, Yue
    Song, Bifeng
    [J]. JOURNAL OF THEORETICAL AND APPLIED MECHANICS, 2021, 59 (02): : 293 - 305
  • [2] Dynamic mode decomposition based analysis of flow over a sinusoidally pitching airfoil
    Menon, Karthik
    Mittal, Rajat
    [J]. JOURNAL OF FLUIDS AND STRUCTURES, 2020, 94
  • [3] Individual influence of pitching and plunging motions on flow structures over an airfoil during dynamic stall
    Li, Zhenyao
    Feng, Lihao
    Wang, Jinjun
    [J]. CHINESE JOURNAL OF AERONAUTICS, 2020, 33 (03) : 840 - 851
  • [4] Individual influence of pitching and plunging motions on flow structures over an airfoil during dynamic stall
    Zhenyao LI
    Lihao FENG
    Jinjun WANG
    [J]. Chinese Journal of Aeronautics, 2020, (03) : 840 - 851
  • [5] Individual influence of pitching and plunging motions on flow structures over an airfoil during dynamic stall
    Zhenyao LI
    Lihao FENG
    Jinjun WANG
    [J]. Chinese Journal of Aeronautics, 2020, 33 (03) : 840 - 851
  • [6] Numerical investigation of transonic flow over deformable airfoil with plunging motion
    Nekoubin, N.
    Nobari, M. R. H.
    [J]. APPLIED MATHEMATICS AND MECHANICS-ENGLISH EDITION, 2016, 37 (01) : 75 - 96
  • [7] Dynamic mode decomposition analysis of flow characteristics of an airfoil with leading edge protuberances
    Zhao, Ming
    Zhao, Yijia
    Liu, Zhengxian
    [J]. AEROSPACE SCIENCE AND TECHNOLOGY, 2020, 98
  • [8] Numerical investigation of transonic flow over deformable airfoil with plunging motion
    N. Nekoubin
    M. R. H. Nobari
    [J]. Applied Mathematics and Mechanics, 2016, 37 : 75 - 96
  • [9] Numerical investigation of transonic flow over deformable airfoil with plunging motion
    N.NEKOUBIN
    M.R.H.NOBARI
    [J]. Applied Mathematics and Mechanics(English Edition), 2016, 37 (01) : 75 - 96
  • [10] Frequency-weighted dynamic mode decomposition for trailing edge flapping airfoil flow
    Zhang, Wei
    Nie, Xutao
    Ou, Liwei
    Xia, Zhixun
    Chen, Lei
    [J]. Hangkong Xuebao/Acta Aeronautica et Astronautica Sinica, 2024, 45 (18):
12345