Aerodynamic study of a leading-edge rotating cylinder in a cambered aerofoil (NACA2412)

Abstract

Purpose

Flow separation over an aircraft’s wing beyond a specific angle of attack is challenging. Flow boundary layer manipulation has been investigated to improve aerofoil lift and mitigate flow separation difficulties including stall and drag. This is solved via active or passive flow control. Active flow control method moving surface boundary (MSB) enhances shear flow momentum, making it effective. MSB is easier than suction and blowing. Asymmetrical airfoils, which generate lift in aircraft wings, have received less MSB research than symmetrical ones. The purpose of this study is to asses the design efficacy of MSB’s NACA 2412 aerofoil.

Design/methodology/approach

To observe the performance of MSB in NACA 2412, a computational model has been created, and aerodynamical performance has been analyzed.

Findings

The study results show that the NACA 2412 with MSB has better aerodynamic efficiency than the NACA 2412 base design. It works best when it reaches its optimal speed and the delay in flow separation works well.

Research limitations/implications

Limitations may include specific aerofoil applicability, external factors and simulation constraints. Implications guide future research for broader insights and applications.

Practical implications

Improving asymmetrical aerofoil performance, mitigating stall effects, reducing drag and optimizing designs with moving surface boundary. Insights gained can enhance overall aircraft efficiency and flow control techniques.

Originality/value

The MSB flow control in a chambered aerofoil is less explored and not explored enough in wing-based aerofoils, and the optimal cylinder speed ratio trend has been discussed at each angle of attack studied.

Citation

K.B., R. and Ganapathy Subramanian, L.R. (2024), "Aerodynamic study of a leading-edge rotating cylinder in a cambered aerofoil (NACA2412)", Aircraft Engineering and Aerospace Technology, Vol. 96 No. 10, pp. 1311-1320. https://doi.org/10.1108/AEAT-02-2024-0026