Large eddy simulation of the low frequency flow oscillation over NACA0012 aerofoil

E. M. ElJack; I. M. AlQadi; J. H.  AlMutairi; J. Soria

Large eddy simulation of the low frequency flow oscillation over NACA0012 aerofoil

E. M. ElJack, I. M. AlQadi, J. H. AlMutairi, J. Soria

Mechanical & Aerospace Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Research › peer-review

Abstract

This study examines the effect of angle of attack of an aerofoil on the low-frequency flow oscillation near stall conditions. Large eddy simulations are performed for a NACA0012 aerofoil at Reynolds number of 5 × 10⁴ and Mach number of 0.4. The simulations are carried-out at angles of attack ranging from 9.0° to 10.1° with increment of 0.1°, in addition to the angles of attack 8.5°, 8.8°, 9.25°, and 10.5°. Time histories of aerodynamic coefficients show large oscillations due to a switching between attached and separated flow around the aerofoil. This is indicative that the low-frequency oscillation phenomenon is captured. Low frequency flow oscillation is sustained and more pronounced at the angles of attack of 9.8°, 9.9°, and 10.0°

Original language	English
Title of host publication	Proceedings of the 20th Australasian Fluid Mechanics Conference (AFMC)
Publisher	Australasian Fluid Mechanics Society
Number of pages	4
ISBN (Electronic)	9781740523776
Publication status	Published - 2016
Event	Australasian Fluid Mechanics Conference 2016 - The University of Western Australia, Perth, Australia Duration: 5 Dec 2016 → 8 Dec 2016 Conference number: 20th

Conference

Conference	Australasian Fluid Mechanics Conference 2016
Abbreviated title	AFMC 2016
Country/Territory	Australia
City	Perth
Period	5/12/16 → 8/12/16

Cite this

@inproceedings{7130b429a47f43f3a0727c8bdaaf390a,

title = "Large eddy simulation of the low frequency flow oscillation over NACA0012 aerofoil",

abstract = "This study examines the effect of angle of attack of an aerofoil on the low-frequency flow oscillation near stall conditions. Large eddy simulations are performed for a NACA0012 aerofoil at Reynolds number of 5 × 104 and Mach number of 0.4. The simulations are carried-out at angles of attack ranging from 9.0° to 10.1° with increment of 0.1°, in addition to the angles of attack 8.5°, 8.8°, 9.25°, and 10.5°. Time histories of aerodynamic coefficients show large oscillations due to a switching between attached and separated flow around the aerofoil. This is indicative that the low-frequency oscillation phenomenon is captured. Low frequency flow oscillation is sustained and more pronounced at the angles of attack of 9.8°, 9.9°, and 10.0°",

author = "ElJack, \{E. M.\} and AlQadi, \{I. M.\} and AlMutairi, \{J. H.\} and J. Soria",

year = "2016",

language = "English",

booktitle = "Proceedings of the 20th Australasian Fluid Mechanics Conference (AFMC)",

publisher = "Australasian Fluid Mechanics Society",

address = "Australia",

note = "Australasian Fluid Mechanics Conference 2016, AFMC 2016 ; Conference date: 05-12-2016 Through 08-12-2016",

}

Large eddy simulation of the low frequency flow oscillation over NACA0012 aerofoil. / ElJack, E. M.; AlQadi, I. M.; AlMutairi, J. H. et al.
Proceedings of the 20th Australasian Fluid Mechanics Conference (AFMC). Australasian Fluid Mechanics Society, 2016. 721.

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Research › peer-review

TY - GEN

T1 - Large eddy simulation of the low frequency flow oscillation over NACA0012 aerofoil

AU - ElJack, E. M.

AU - AlQadi, I. M.

AU - AlMutairi, J. H.

AU - Soria, J.

N1 - Conference code: 20th

PY - 2016

Y1 - 2016

N2 - This study examines the effect of angle of attack of an aerofoil on the low-frequency flow oscillation near stall conditions. Large eddy simulations are performed for a NACA0012 aerofoil at Reynolds number of 5 × 104 and Mach number of 0.4. The simulations are carried-out at angles of attack ranging from 9.0° to 10.1° with increment of 0.1°, in addition to the angles of attack 8.5°, 8.8°, 9.25°, and 10.5°. Time histories of aerodynamic coefficients show large oscillations due to a switching between attached and separated flow around the aerofoil. This is indicative that the low-frequency oscillation phenomenon is captured. Low frequency flow oscillation is sustained and more pronounced at the angles of attack of 9.8°, 9.9°, and 10.0°

AB - This study examines the effect of angle of attack of an aerofoil on the low-frequency flow oscillation near stall conditions. Large eddy simulations are performed for a NACA0012 aerofoil at Reynolds number of 5 × 104 and Mach number of 0.4. The simulations are carried-out at angles of attack ranging from 9.0° to 10.1° with increment of 0.1°, in addition to the angles of attack 8.5°, 8.8°, 9.25°, and 10.5°. Time histories of aerodynamic coefficients show large oscillations due to a switching between attached and separated flow around the aerofoil. This is indicative that the low-frequency oscillation phenomenon is captured. Low frequency flow oscillation is sustained and more pronounced at the angles of attack of 9.8°, 9.9°, and 10.0°

UR - https://www.scopus.com/pages/publications/85084017155

M3 - Conference Paper

AN - SCOPUS:85084017155

BT - Proceedings of the 20th Australasian Fluid Mechanics Conference (AFMC)

PB - Australasian Fluid Mechanics Society

T2 - Australasian Fluid Mechanics Conference 2016

Y2 - 5 December 2016 through 8 December 2016

ER -

Large eddy simulation of the low frequency flow oscillation over NACA0012 aerofoil

Abstract

Conference

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