- Tytuł:
- Research on chaotic features of a flow field over a plunging airfoil based on dynamic mode decomposition
- Autorzy:
-
Qi, Yuhang
Yang, Wenqing
Wang, Yue
Song, Bifeng - Powiązania:
- https://bibliotekanauki.pl/articles/1839716.pdf
- Data publikacji:
- 2021
- Wydawca:
- Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
- Tematy:
-
plunging airfoil
chaotic flow
dynamic mode decomposition
thrust characteristic
irregularity - Opis:
- 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.
- Źródło:
-
Journal of Theoretical and Applied Mechanics; 2021, 59, 2; 293-305
1429-2955 - Pojawia się w:
- Journal of Theoretical and Applied Mechanics
- Dostawca treści:
- Biblioteka Nauki
Artykuł