SHOCK-WAVE AND SHEAR-LAYER OSCILLATIONS OVER A DOUBLE CONE IN HIGH-SPEED FLOW

Sasidharan, V and Kumar, G and Kumar, AG and Duvvuri, S (2022) SHOCK-WAVE AND SHEAR-LAYER OSCILLATIONS OVER A DOUBLE CONE IN HIGH-SPEED FLOW. In: 12th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2022, 19 - 22 July 2022, Osaka, Virtual.

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Abstract

Small-amplitude shock-wave oscillations in a canonical double-cone geometry are investigated by wind tunnel experiments and large-eddy simulation (LES) at Mach 6 flow conditions. The second cone angle is fixed at 90° while the first cone angle and the ratio of the slant heights are varied as parameters. Two distinct type of flow oscillations are observed and characterized using time-resolved schlieren data from the experiments. The Strouhal number for the oscillations is obtained through spectral proper orthogonal decomposition of schlieren data. The LES results, which are found to match well with the experiment, clearly show the three-dimensional nature of flow unsteadiness. Key results from this work and a discussion are presented here. © 2022 12th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2022. All rights reserved.

Item Type:	Conference Paper
Publication:	12th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2022
Publisher:	International Symposium on Turbulence and Shear Flow Phenomena, TSFP
Additional Information:	The copyright for this article belongs to International Symposium on Turbulence and Shear Flow Phenomena, TSFP.
Keywords:	Cones; Principal component analysis; Shear flow; Shock waves; Turbulence; Wind tunnels, Cone angle; Cone geometry; Double cones; High speed flows; Large-eddy simulations; Shear layer; Shock wave oscillation; Shock-waves; Small amplitude; Wind tunnel experiment, Large eddy simulation
Department/Centre:	Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited:	22 Jan 2023 05:58
Last Modified:	22 Jan 2023 05:58
URI:	https://eprints.iisc.ac.in/id/eprint/79219

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