Critical Aspects in the Aerodynamics of Helicopter Blade-Vortex Interaction: A Numerical Study Using LES

Marcel Ilie

doi:10.2514/6.2010-677

Critical Aspects in the Aerodynamics of Helicopter Blade-Vortex Interaction: A Numerical Study Using LES

Marcel Ilie

Mechanical Engineering

Research output: Contribution to book or proceeding › Chapter

Abstract

Numerical investigations of helicopter blade-vortex mechanism of interaction are performed using large eddy simulation (LES). The simulations were performed for a Reynolds number, Re = 1.3 × 10^6, based on the chord, c, of the airfoil (NACA0012). Computations are carried out for two different types of blade-vortex interactions, concerning single and respectively two vortices blade interaction. It was observed that for single vortex-blade interaction, the blade-vortex interaction becomes less significant with the increase of vertical miss distance. Larger amplitudes of aerodynamic coefficients were observed for the case of two vortices-blade interaction when compared with the single vortex blade interactions.

Original language	American English
Title of host publication	Proceedings of the Aerospace Sciences Meeting
DOIs	https://doi.org/10.2514/6.2010-677
State	Published - Jan 4 2010

Disciplines

Mechanical Engineering

Keywords

Aerodynamics
Helicopter blade-vortex interaction
LES

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title = "Critical Aspects in the Aerodynamics of Helicopter Blade-Vortex Interaction: A Numerical Study Using LES",

abstract = " Numerical investigations of helicopter blade-vortex mechanism of interaction are performed using large eddy simulation (LES). The simulations were performed for a Reynolds number, Re = 1.3 × 10^6, based on the chord, c, of the airfoil (NACA0012). Computations are carried out for two different types of blade-vortex interactions, concerning single and respectively two vortices blade interaction. It was observed that for single vortex-blade interaction, the blade-vortex interaction becomes less significant with the increase of vertical miss distance. Larger amplitudes of aerodynamic coefficients were observed for the case of two vortices-blade interaction when compared with the single vortex blade interactions.",

keywords = "Aerodynamics, Helicopter blade-vortex interaction, LES",

author = "Marcel Ilie",

year = "2010",

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doi = "10.2514/6.2010-677",

language = "American English",

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AU - Ilie, Marcel

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N2 - Numerical investigations of helicopter blade-vortex mechanism of interaction are performed using large eddy simulation (LES). The simulations were performed for a Reynolds number, Re = 1.3 × 10^6, based on the chord, c, of the airfoil (NACA0012). Computations are carried out for two different types of blade-vortex interactions, concerning single and respectively two vortices blade interaction. It was observed that for single vortex-blade interaction, the blade-vortex interaction becomes less significant with the increase of vertical miss distance. Larger amplitudes of aerodynamic coefficients were observed for the case of two vortices-blade interaction when compared with the single vortex blade interactions.

AB - Numerical investigations of helicopter blade-vortex mechanism of interaction are performed using large eddy simulation (LES). The simulations were performed for a Reynolds number, Re = 1.3 × 10^6, based on the chord, c, of the airfoil (NACA0012). Computations are carried out for two different types of blade-vortex interactions, concerning single and respectively two vortices blade interaction. It was observed that for single vortex-blade interaction, the blade-vortex interaction becomes less significant with the increase of vertical miss distance. Larger amplitudes of aerodynamic coefficients were observed for the case of two vortices-blade interaction when compared with the single vortex blade interactions.

KW - Aerodynamics

KW - Helicopter blade-vortex interaction

KW - LES

UR - https://doi.org/10.2514/6.2010-677

U2 - 10.2514/6.2010-677

DO - 10.2514/6.2010-677

M3 - Chapter

BT - Proceedings of the Aerospace Sciences Meeting

ER -

Critical Aspects in the Aerodynamics of Helicopter Blade-Vortex Interaction: A Numerical Study Using LES

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