Numerical investigation of free rotor aerodynamics

Sarih Sarı; Ali Doğrul; Seyfettin Bayraktar

Numerical investigation of free rotor aerodynamics

Abstract

Rotor aerodynamics is important for rotarywing aircraft especially those located in naval surface combatants. The aerodynamic interaction between the helicopter, its rotor and the ship structure should be investigated precisely. This study focuses on the aerodynamic perfor-mance of four-blade rotor geometry of Sikorsky S-76 helicopter. The main rotor geometry was analyzed numerically in the free condition in an unbounded flow domain. Unsteady Reynolds-Averaged Navier-Stokes (URANS) equations in rigid body motion (RBM) on unstruc-tured grids were solved by discretizing the computational domain with finite volume elements and using the Shear-Stress Transport (SST) k-ω turbulence model. The numerical approach was verified using the GCI method and validated with the relevant data available in the literature. It was found that in hover condition, non-dimensional thrust and the torque coefficients change slightly with the rotation speed of the rotor due to possibly the collective pitch angle. However, whereas the torque coefficient varies slightly with rotor speed, the thrust coefficient fluctuates substantially.

Keywords

References

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Details

Primary Language

English

Subjects

Clinical Chemistry

Journal Section

Research Article

Authors

Sarih Sarı ^*
0000-0002-0665-5046
Türkiye

Ali Doğrul
0000-0003-3236-555X
Türkiye

Seyfettin Bayraktar
0000-0002-1554-353X
Türkiye

Publication Date

December 9, 2024

Submission Date

June 15, 2023

Acceptance Date

January 6, 2024

Published in Issue

Year 2024 Volume: 42 Number: 6

IZ

https://izlik.org/JA35BB73WJ

Cite

RIS / Bibtex

APA

Sarı, S., Doğrul, A., & Bayraktar, S. (2024). Numerical investigation of free rotor aerodynamics. Sigma Journal of Engineering and Natural Sciences, 42(6), 1826-1837. https://izlik.org/JA35BB73WJ

AMA

1.Sarı S, Doğrul A, Bayraktar S. Numerical investigation of free rotor aerodynamics. SIGMA. 2024;42(6):1826-1837. https://izlik.org/JA35BB73WJ

Chicago

Sarı, Sarih, Ali Doğrul, and Seyfettin Bayraktar. 2024. “Numerical Investigation of Free Rotor Aerodynamics”. Sigma Journal of Engineering and Natural Sciences 42 (6): 1826-37. https://izlik.org/JA35BB73WJ.

EndNote

Sarı S, Doğrul A, Bayraktar S (December 1, 2024) Numerical investigation of free rotor aerodynamics. Sigma Journal of Engineering and Natural Sciences 42 6 1826–1837.

IEEE

[1]S. Sarı, A. Doğrul, and S. Bayraktar, “Numerical investigation of free rotor aerodynamics”, SIGMA, vol. 42, no. 6, pp. 1826–1837, Dec. 2024, [Online]. Available: https://izlik.org/JA35BB73WJ

ISNAD

Sarı, Sarih - Doğrul, Ali - Bayraktar, Seyfettin. “Numerical Investigation of Free Rotor Aerodynamics”. Sigma Journal of Engineering and Natural Sciences 42/6 (December 1, 2024): 1826-1837. https://izlik.org/JA35BB73WJ.

JAMA

1.Sarı S, Doğrul A, Bayraktar S. Numerical investigation of free rotor aerodynamics. SIGMA. 2024;42:1826–1837.

MLA

Sarı, Sarih, et al. “Numerical Investigation of Free Rotor Aerodynamics”. Sigma Journal of Engineering and Natural Sciences, vol. 42, no. 6, Dec. 2024, pp. 1826-37, https://izlik.org/JA35BB73WJ.

Vancouver

1.Sarih Sarı, Ali Doğrul, Seyfettin Bayraktar. Numerical investigation of free rotor aerodynamics. SIGMA [Internet]. 2024 Dec. 1;42(6):1826-37. Available from: https://izlik.org/JA35BB73WJ