Transonic buffet in the Benchmark Supercritical Wing

Singh, M and Venkatraman, K (2023) Transonic buffet in the Benchmark Supercritical Wing. In: AIAA SciTech Forum and Exposition, 2023, 23 January 2023 through 27 January 2023, Orlando.

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Abstract

Transonic buffet and buffeting is a serious concern in aircraft wings and is associated with unsteady forces caused by shock oscillations induced by shock boundary layer interactions and flow separation in the boundary layer. The present numerical study explores the occurrence of transonic buffet in the Benchmark Supercritical Wing (BSCW) used in the Aeroelastic Prediction Workshop-3 (AEPW-3) at a Mach number of 0.8, an angle of attack of 5�, and Reynolds number 4 � 106. The URANS model captures the transonic buffet at these transonic conditions. Where, turbulence closure is obtained using Spalart-Allmaras turbulence model with Edwards and Chandra�s modification and mixing layer compressibility correction. The 3D vortex flow structures are observed in separated flow region near wing�s root; the same has been observed in an experimental study by Jacquin, Laurent, et al. "Experimental study of shock oscillation over a transonic supercritical profile." AIAA journal 47.9 (2009): 1985-1994. © 2023, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.

Item Type:	Conference Paper
Publication:	AIAA SciTech Forum and Exposition, 2023
Publisher:	American Institute of Aeronautics and Astronautics Inc, AIAA
Additional Information:	The copyright for this article belongs to the publishers.
Keywords:	Aeroelasticity; Angle of attack; Angle of attack indicators; Boundary layers; Flow separation; Reynolds number; Structural dynamics; Supersonic aircraft; Transonic aerodynamics; Turbulence models; Vortex flow, Angle-of-attack; Boundary-layer flows; Reynold number; Shock boundary-layer interactions; Shock oscillations; Supercritical; Transonic buffet; Transonic buffeting; Transonic conditions; Turbulence closures, Wings
Department/Centre:	Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited:	09 Oct 2024 10:07
Last Modified:	09 Oct 2024 10:07
URI:	http://eprints.iisc.ac.in/id/eprint/86423

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