- Tytuł:
- The effects of trailing edge blowing on aerodynamic characteristics of the NACA 0012 airfoil and optimization of the blowing slot geometry
- Autorzy:
-
Yousefi, K.
Saleh, R. - Powiązania:
- https://bibliotekanauki.pl/articles/949224.pdf
- Data publikacji:
- 2014
- Wydawca:
- Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
- Tematy:
-
tangential and perpendicular blowing
blowing jet width
blowing amplitude
lift and drag coefficients
flow control - Opis:
- The effects of blowing and its parameters including the jet amplitude, blowing coefficient and jet width in order to flow control was evaluated for a NACA 0012 airfoil. The flow was considered as fully turbulent with the Reynolds number of 5 · 105, and the Menter shear stress turbulent model was employed. Tangential and perpendicular blowing at the trailing edge were applied on the airfoil upper surface, and the jet widths were varied from 1.5 to 4 percent of the chord length, and the jet amplitude was also selected 0.1, 0.3 and 0.5. In the tangential blowing, the results showed that when the blowing amplitude increases, the lift- to-drag ratio rises by 15 percent, however, the smaller amounts of the blowing amplitude are more effective in the perpendicular blowing. Furthermore, when the blowing jet width rises, the lift-to-drag ratio increases continuously in the tangential blowing and decreases quasi- linear in the perpendicular blowing. In this study, the blowing jet width 3.5 and 4 percent of the chord length for the tangential blowing was selected as optimal values as well as smaller amounts of blowing jet width are more suitable for the perpendicular blowing. Finally, the lift-to-drag ratio was increased by 17 percent for the tangential blowing in the angle of attack of 18 degrees.
- Źródło:
-
Journal of Theoretical and Applied Mechanics; 2014, 52, 1; 165-179
1429-2955 - Pojawia się w:
- Journal of Theoretical and Applied Mechanics
- Dostawca treści:
- Biblioteka Nauki
Artykuł