| Autor: |
Arunvinthan, S., Rashid, N. I. Haroon, Pillai, S. Nadaraja |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2022, Vol. 2520 Issue 1, p1-9, 9p |
| Abstrakt: |
Aerodynamic characteristics of the LEP wing encountering turbulence intensities (TI) were experimentally evaluated in this paper. NACA 63(4)-021 aerofoil profile featuring LEP with an amplitude of 0.12C and wavelength 0.5C were 3D printed with 54 surface pressure tapings. All the wind tunnel tests were performed over α ranging between 0o ≤ α ≤ 45o at TI=1%, 2.5% and 5% respectively. The effect of TI on the aerodynamic force coefficients (CL; CD) were then obtained from the surface pressure measurements made over the test model using simultaneous pressure scanner corresponding to a sampling frequency of 700Hz and 10,000 data samples. The aerodynamic forces were then obtained from the surface pressure measurements using pressure integration technique. Results reveal that the time-averaged mean (CL) of the LEP wing increases with increment in TI except at TI=5%. It is identified that higher magnitudes of turbulence is detrimental as it disturbs the complicated flow pattern prevailing over the LEP wing. Additionally, attempts were made to quantify the aerodynamic drag forces and aerodynamic efficienct of the LEP models when subjected to various turbulence intensities. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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