Reduction of Helicopter BVI Noise Using Synthetic Jets: A Numerical Study Using Large-Eddy Simulation

Patricia Coronado; Carlos Velez; Marcel Ilie

doi:10.2514/6.2013-804

Reduction of Helicopter BVI Noise Using Synthetic Jets: A Numerical Study Using Large-Eddy Simulation

Patricia Coronado, Carlos Velez, Marcel Ilie

Mechanical Engineering

University of Central Florida

Research output: Contribution to book or proceeding › Chapter

Abstract

A novel technique regarding the reduction of helicopter blade-vortex interaction noise is proposed. The proposed technique is based on the idea of injecting air at the leading edge of the blade to alter the vortex characteristics (strength and core size). The numerical investigations are performed using the large-eddy simulation (LES) approach. The simulations were performed for a Reynolds number, Re=1.3x10^6, based on the NACA0012 airfoil chord and free-stream velocity. The present study shows that by injecting air at the leading edge of the blade, the influence of blade-vortex interaction on the aerodynamic coefficients and aeroacoustic noise is significantly reduced.

Original language	American English
Title of host publication	Proceedings of the Aerospace Sciences Meeting
DOIs	https://doi.org/10.2514/6.2013-804
State	Published - Jan 7 2013

Disciplines

Mechanical Engineering

Keywords

BVI noise
Helicopter
Large-eddy simulation
Numerical study
Synthetic jets

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title = "Reduction of Helicopter BVI Noise Using Synthetic Jets: A Numerical Study Using Large-Eddy Simulation",

abstract = " A novel technique regarding the reduction of helicopter blade-vortex interaction noise is proposed. The proposed technique is based on the idea of injecting air at the leading edge of the blade to alter the vortex characteristics (strength and core size). The numerical investigations are performed using the large-eddy simulation (LES) approach. The simulations were performed for a Reynolds number, Re=1.3x10^6, based on the NACA0012 airfoil chord and free-stream velocity. The present study shows that by injecting air at the leading edge of the blade, the influence of blade-vortex interaction on the aerodynamic coefficients and aeroacoustic noise is significantly reduced.",

keywords = "BVI noise, Helicopter, Large-eddy simulation, Numerical study, Synthetic jets",

author = "Patricia Coronado and Carlos Velez and Marcel Ilie",

year = "2013",

month = jan,

day = "7",

doi = "10.2514/6.2013-804",

language = "American English",

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T1 - Reduction of Helicopter BVI Noise Using Synthetic Jets: A Numerical Study Using Large-Eddy Simulation

AU - Coronado, Patricia

AU - Velez, Carlos

AU - Ilie, Marcel

PY - 2013/1/7

Y1 - 2013/1/7

N2 - A novel technique regarding the reduction of helicopter blade-vortex interaction noise is proposed. The proposed technique is based on the idea of injecting air at the leading edge of the blade to alter the vortex characteristics (strength and core size). The numerical investigations are performed using the large-eddy simulation (LES) approach. The simulations were performed for a Reynolds number, Re=1.3x10^6, based on the NACA0012 airfoil chord and free-stream velocity. The present study shows that by injecting air at the leading edge of the blade, the influence of blade-vortex interaction on the aerodynamic coefficients and aeroacoustic noise is significantly reduced.

AB - A novel technique regarding the reduction of helicopter blade-vortex interaction noise is proposed. The proposed technique is based on the idea of injecting air at the leading edge of the blade to alter the vortex characteristics (strength and core size). The numerical investigations are performed using the large-eddy simulation (LES) approach. The simulations were performed for a Reynolds number, Re=1.3x10^6, based on the NACA0012 airfoil chord and free-stream velocity. The present study shows that by injecting air at the leading edge of the blade, the influence of blade-vortex interaction on the aerodynamic coefficients and aeroacoustic noise is significantly reduced.

KW - BVI noise

KW - Helicopter

KW - Large-eddy simulation

KW - Numerical study

KW - Synthetic jets

UR - https://doi.org/10.2514/6.2013-804

U2 - 10.2514/6.2013-804

DO - 10.2514/6.2013-804

M3 - Chapter

BT - Proceedings of the Aerospace Sciences Meeting

ER -

Reduction of Helicopter BVI Noise Using Synthetic Jets: A Numerical Study Using Large-Eddy Simulation

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