Shock boundary layer interaction in a supersonic flow over a flexible compression ramp

Sunderroy, SS and Karnick, PT and Venkatraman, K (2022) Shock boundary layer interaction in a supersonic flow over a flexible compression ramp. In: AIAA AVIATION 2022 Forum, 27 June - 1 July 2022, Chicago.

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Abstract

Aeroelastic and aerothermoelastic interactions are likely to be significant in a supersonic or hypersonic compression ramp. The work presented here is a study of aeroelastic interactions of turbulent flow over a flexible compression ramp. RANS and URANS fluid computations tightly coupled with a finite element model of the flexible ramp are presented here to understand aeroelastic effects on shock structure and shock motion. Flow separation and reattachment together with shock structure through numerical shadowgraph are analyzed and presented. In the static aeroelastic case, the shock structure shows appreciable change with variation in stiffness, although the pressure ratio over the ramp does not change appreciably. Aeroelastic flutter instability does not occur for the parameters simulated; however, the time-variation in the pressure ratio as well as the shock structure is significant. These studies point to the importance of aeroelastic considerations in designing supersonic and hypersonic intakes as the shock structure is likely to change and interact with the intake cowl.

Item Type:	Conference Paper
Publication:	AIAA AVIATION 2022 Forum
Publisher:	American Institute of Aeronautics and Astronautics Inc, AIAA
Additional Information:	The copyright for this article belongs to the American Institute of Aeronautics and Astronautics Inc, AIAA.
Keywords:	Flow separation; Hypersonic flow; Structural dynamics, Aeroelastic effects; Aeroelastic interactions; Compression ramps; Finite element modelling (FEM); Flow separation and reattachments; Pressure ratio; Shock boundary-layer interactions; Shock structure; Static aeroelastics; Tightly-coupled, Aeroelasticity
Department/Centre:	Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited:	23 Aug 2022 05:44
Last Modified:	23 Aug 2022 05:44
URI:	https://eprints.iisc.ac.in/id/eprint/76177

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