Airfoil Trailing Edge Noise Generation and Its Surface Pressure Fluctuation

Wei Jun Zhu, Wen Zhong Shen

Research output: Contribution to journalJournal articleResearchpeer-review

235 Downloads (Pure)

Abstract

In the present work, Large Eddy Simulation (LES) of turbulent flows over a NACA 0015 airfoil is performed. The purpose of such numerical study is to relate the aerodynamic surface pressure with the noise generation. The results from LES are validated against detailed surface pressure measurements where the time history pressure data are recorded by the surface pressure microphones. After the flow-field is stabilized, the generated noise from the airfoil Trailing Edge (TE) is predicted using the acoustic analogy solver, where the results from LES are the input. It is found that there is a strong relation between TE noise and the aerodynamic pressure. The results of power spectrum density show that the fluctuation of aerodynamic pressure is responsible for noise generation.
Original languageEnglish
JournalJournal of Power and Energy Engineering
Volume3
Pages (from-to)14-19
ISSN2327-588X
DOIs
Publication statusPublished - 2015

Keywords

  • Large Eddy Simulation
  • Trailing Edge Noise
  • Surface Pressure

Cite this

@article{d077a1b8a5dd4fb89f4d9e48895f6814,
title = "Airfoil Trailing Edge Noise Generation and Its Surface Pressure Fluctuation",
abstract = "In the present work, Large Eddy Simulation (LES) of turbulent flows over a NACA 0015 airfoil is performed. The purpose of such numerical study is to relate the aerodynamic surface pressure with the noise generation. The results from LES are validated against detailed surface pressure measurements where the time history pressure data are recorded by the surface pressure microphones. After the flow-field is stabilized, the generated noise from the airfoil Trailing Edge (TE) is predicted using the acoustic analogy solver, where the results from LES are the input. It is found that there is a strong relation between TE noise and the aerodynamic pressure. The results of power spectrum density show that the fluctuation of aerodynamic pressure is responsible for noise generation.",
keywords = "Large Eddy Simulation, Trailing Edge Noise, Surface Pressure",
author = "Zhu, {Wei Jun} and Shen, {Wen Zhong}",
year = "2015",
doi = "10.4236/jpee.2015.37003",
language = "English",
volume = "3",
pages = "14--19",
journal = "Journal of Power and Energy Engineering",
issn = "2327-588X",
publisher = "scientific research publishing",

}

Airfoil Trailing Edge Noise Generation and Its Surface Pressure Fluctuation. / Zhu, Wei Jun; Shen, Wen Zhong.

In: Journal of Power and Energy Engineering, Vol. 3, 2015, p. 14-19.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Airfoil Trailing Edge Noise Generation and Its Surface Pressure Fluctuation

AU - Zhu, Wei Jun

AU - Shen, Wen Zhong

PY - 2015

Y1 - 2015

N2 - In the present work, Large Eddy Simulation (LES) of turbulent flows over a NACA 0015 airfoil is performed. The purpose of such numerical study is to relate the aerodynamic surface pressure with the noise generation. The results from LES are validated against detailed surface pressure measurements where the time history pressure data are recorded by the surface pressure microphones. After the flow-field is stabilized, the generated noise from the airfoil Trailing Edge (TE) is predicted using the acoustic analogy solver, where the results from LES are the input. It is found that there is a strong relation between TE noise and the aerodynamic pressure. The results of power spectrum density show that the fluctuation of aerodynamic pressure is responsible for noise generation.

AB - In the present work, Large Eddy Simulation (LES) of turbulent flows over a NACA 0015 airfoil is performed. The purpose of such numerical study is to relate the aerodynamic surface pressure with the noise generation. The results from LES are validated against detailed surface pressure measurements where the time history pressure data are recorded by the surface pressure microphones. After the flow-field is stabilized, the generated noise from the airfoil Trailing Edge (TE) is predicted using the acoustic analogy solver, where the results from LES are the input. It is found that there is a strong relation between TE noise and the aerodynamic pressure. The results of power spectrum density show that the fluctuation of aerodynamic pressure is responsible for noise generation.

KW - Large Eddy Simulation

KW - Trailing Edge Noise

KW - Surface Pressure

U2 - 10.4236/jpee.2015.37003

DO - 10.4236/jpee.2015.37003

M3 - Journal article

VL - 3

SP - 14

EP - 19

JO - Journal of Power and Energy Engineering

JF - Journal of Power and Energy Engineering

SN - 2327-588X

ER -