Transonic buffet control by means of upper Gurney flaps

Alessandro D'Aguanno; Ferdinand Schrijer; Bas van Oudheusden

Transonic buffet control by means of upper Gurney flaps

Alessandro D'Aguanno, Ferdinand Schrijer, Bas van Oudheusden

Aerodynamics

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific

169 Downloads (Pure)

Abstract

This study investigates the possibility of controlling transonic buffet by means of a Gurney Flap with an upward deflection at the trailing edge of the airfoil (UGF). Different geometries and dimensions of UGFs have been studied for their impact on the buffet behaviour. The effectiveness of the UGFs has been tested experimentally with Schlieren and PIV in the transonic-supersonic wind tunnel of TU Delft at Ma=0.7, a=3.5. It is found that the best performing UGF is a straight UGF with a height of 1.5% or 2% of the chord. These UGFs allow the reduction of the energy associated with buffet. This result has been corroborated by a flow description of the phases of buffet, a spectral analysis and a POD approach. In addition, the straight UGFs resulted to be effective in a less developed buffet condition too.

Original language	English
Title of host publication	54th 3AF International Conference AERO2019 At: Paris, France
Number of pages	10
Publication status	Published - 2019
Event	54th 3AF International Conference on Applied Aerodynamics - Paris, France Duration: 25 Mar 2019 → 27 Mar 2019 Conference number: 54 http://3af-aerodynamics2019.com/

Conference

Conference	54th 3AF International Conference on Applied Aerodynamics
Abbreviated title	AERO 2019
Country/Territory	France
City	Paris
Period	25/03/19 → 27/03/19
Internet address	http://3af-aerodynamics2019.com/

Access to Document

AERO2019_47_A. DAGUANNO_PAccepted author manuscript, 7.71 MBLicence: Unspecified

Cite this

@inproceedings{03754d1865454dbfbebdc643f5918bae,

title = "Transonic buffet control by means of upper Gurney flaps",

abstract = "This study investigates the possibility of controlling transonic buffet by means of a Gurney Flap with an upward deflection at the trailing edge of the airfoil (UGF). Different geometries and dimensions of UGFs have been studied for their impact on the buffet behaviour. The effectiveness of the UGFs has been tested experimentally with Schlieren and PIV in the transonic-supersonic wind tunnel of TU Delft at Ma=0.7, a=3.5. It is found that the best performing UGF is a straight UGF with a height of 1.5% or 2% of the chord. These UGFs allow the reduction of the energy associated with buffet. This result has been corroborated by a flow description of the phases of buffet, a spectral analysis and a POD approach. In addition, the straight UGFs resulted to be effective in a less developed buffet condition too. ",

author = "Alessandro D'Aguanno and Ferdinand Schrijer and {van Oudheusden}, Bas",

year = "2019",

language = "English",

booktitle = "54th 3AF International Conference AERO2019 At: Paris, France",

note = "54th 3AF International Conference on Applied Aerodynamics, AERO 2019 ; Conference date: 25-03-2019 Through 27-03-2019",

url = "http://3af-aerodynamics2019.com/",

}

TY - GEN

T1 - Transonic buffet control by means of upper Gurney flaps

AU - D'Aguanno, Alessandro

AU - Schrijer, Ferdinand

AU - van Oudheusden, Bas

N1 - Conference code: 54

PY - 2019

Y1 - 2019

N2 - This study investigates the possibility of controlling transonic buffet by means of a Gurney Flap with an upward deflection at the trailing edge of the airfoil (UGF). Different geometries and dimensions of UGFs have been studied for their impact on the buffet behaviour. The effectiveness of the UGFs has been tested experimentally with Schlieren and PIV in the transonic-supersonic wind tunnel of TU Delft at Ma=0.7, a=3.5. It is found that the best performing UGF is a straight UGF with a height of 1.5% or 2% of the chord. These UGFs allow the reduction of the energy associated with buffet. This result has been corroborated by a flow description of the phases of buffet, a spectral analysis and a POD approach. In addition, the straight UGFs resulted to be effective in a less developed buffet condition too.

AB - This study investigates the possibility of controlling transonic buffet by means of a Gurney Flap with an upward deflection at the trailing edge of the airfoil (UGF). Different geometries and dimensions of UGFs have been studied for their impact on the buffet behaviour. The effectiveness of the UGFs has been tested experimentally with Schlieren and PIV in the transonic-supersonic wind tunnel of TU Delft at Ma=0.7, a=3.5. It is found that the best performing UGF is a straight UGF with a height of 1.5% or 2% of the chord. These UGFs allow the reduction of the energy associated with buffet. This result has been corroborated by a flow description of the phases of buffet, a spectral analysis and a POD approach. In addition, the straight UGFs resulted to be effective in a less developed buffet condition too.

M3 - Conference contribution

BT - 54th 3AF International Conference AERO2019 At: Paris, France

T2 - 54th 3AF International Conference on Applied Aerodynamics

Y2 - 25 March 2019 through 27 March 2019

ER -

Transonic buffet control by means of upper Gurney flaps

Abstract

Conference

Access to Document

Fingerprint

Cite this