Experiments and simulations of weak shock wave diffraction phenomena
Experiments and simulations of weak shock wave diffraction phenomena
Shock wave diffraction is a complex process which has been studied at great length but has never been fully understood. The diffraction process creates numerous complex wave structures, a shear layer and a strong vortex. The structure of this shear layer has been the subject of numerous studies. Some simulations have shown this shear layer to be unstable and develop Kelvin-Helmholtz-style instabilities. The diffraction process is widely regarded as self-similar in time; however, these instabilities have never been seen experimentally at small time scales. The high speed and small scale of the phenomena present make them extremely challenging to visualize using any experimental method. In this study, shadow-graph, PIV, laser sheet visualization and CFD have been used in conjunction in order to give a complete picture of the flow field generated by a M i = 1.28 diffracting around a 172 • corner.
Quinn, M.K.
e2903e93-c85f-4f30-b5b0-83e0a0b55ac2
Kontis, K.
e40ecdbc-e5e9-4522-abf9-e3c3f3c2d7fa
Gongora-Orozco, N.
ad84ae2a-c214-4d5e-8f56-72caea445273
Zare-Behtash, H.
74be9b97-cb09-49c6-9f75-7ec58c0dd16c
Mariani, R.
34d5e8d6-1706-45c8-9d66-2d37522cd15a
20 August 2012
Quinn, M.K.
e2903e93-c85f-4f30-b5b0-83e0a0b55ac2
Kontis, K.
e40ecdbc-e5e9-4522-abf9-e3c3f3c2d7fa
Gongora-Orozco, N.
ad84ae2a-c214-4d5e-8f56-72caea445273
Zare-Behtash, H.
74be9b97-cb09-49c6-9f75-7ec58c0dd16c
Mariani, R.
34d5e8d6-1706-45c8-9d66-2d37522cd15a
Quinn, M.K., Kontis, K., Gongora-Orozco, N., Zare-Behtash, H. and Mariani, R.
(2012)
Experiments and simulations of weak shock wave diffraction phenomena.
20th international shock interaction symposium (ISIS20), , Stockholm, Sweden.
20 - 24 Aug 2012.
Record type:
Conference or Workshop Item
(Paper)
Abstract
Shock wave diffraction is a complex process which has been studied at great length but has never been fully understood. The diffraction process creates numerous complex wave structures, a shear layer and a strong vortex. The structure of this shear layer has been the subject of numerous studies. Some simulations have shown this shear layer to be unstable and develop Kelvin-Helmholtz-style instabilities. The diffraction process is widely regarded as self-similar in time; however, these instabilities have never been seen experimentally at small time scales. The high speed and small scale of the phenomena present make them extremely challenging to visualize using any experimental method. In this study, shadow-graph, PIV, laser sheet visualization and CFD have been used in conjunction in order to give a complete picture of the flow field generated by a M i = 1.28 diffracting around a 172 • corner.
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Published date: 20 August 2012
Venue - Dates:
20th international shock interaction symposium (ISIS20), , Stockholm, Sweden, 2012-08-20 - 2012-08-24
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Local EPrints ID: 493191
URI: http://eprints.soton.ac.uk/id/eprint/493191
PURE UUID: d86a1659-563f-45ea-845e-45039a8e5ae4
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Date deposited: 27 Aug 2024 16:56
Last modified: 28 Aug 2024 02:16
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Contributors
Author:
M.K. Quinn
Author:
K. Kontis
Author:
N. Gongora-Orozco
Author:
H. Zare-Behtash
Author:
R. Mariani
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