Instability of supersonic ramp flow with intermittent transition to turbulence
Instability of supersonic ramp flow with intermittent transition to turbulence
This paper investigates the global instability of supersonic ramp flow at Mach number 4.8 at different Reynolds numbers through direct numerical simulations. It is found that a critical Reynolds number exists for the flow to become globally unstable. Transition to turbulence happens downstream of the ramp with strong intermittency and is due to the breakdown of streaky structures fed by instability from the ramp separation region.
373-378
Zhang, Kangping
3d0b3b18-bbd0-4992-820b-afa00a009f18
Sandham, Neil
0024d8cd-c788-4811-a470-57934fbdcf97
Hu, Zhiwei
dd985844-1e6b-44ba-9e1d-fa57c6c88d65
2018
Zhang, Kangping
3d0b3b18-bbd0-4992-820b-afa00a009f18
Sandham, Neil
0024d8cd-c788-4811-a470-57934fbdcf97
Hu, Zhiwei
dd985844-1e6b-44ba-9e1d-fa57c6c88d65
Zhang, Kangping, Sandham, Neil and Hu, Zhiwei
(2018)
Instability of supersonic ramp flow with intermittent transition to turbulence.
In,
Grigoriadis, D., Geurts, B., Kuerten, H., Frohlich, J. and Armenio, V.
(eds.)
Direct and Large-Eddy Simulation X.
(ERCOFTAC, 24)
Cham.
Springer, .
(doi:10.1007/978-3-319-63212-4_47).
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Abstract
This paper investigates the global instability of supersonic ramp flow at Mach number 4.8 at different Reynolds numbers through direct numerical simulations. It is found that a critical Reynolds number exists for the flow to become globally unstable. Transition to turbulence happens downstream of the ramp with strong intermittency and is due to the breakdown of streaky structures fed by instability from the ramp separation region.
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Instability_of_supersonic
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Instability of supersonic
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Accepted/In Press date: 19 February 2017
e-pub ahead of print date: 8 October 2017
Published date: 2018
Identifiers
Local EPrints ID: 415691
URI: http://eprints.soton.ac.uk/id/eprint/415691
ISSN: 1382-4309
PURE UUID: 6675e88e-03d2-4db8-853e-e1b87307088b
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Date deposited: 20 Nov 2017 17:30
Last modified: 16 Mar 2024 03:03
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Contributors
Author:
Kangping Zhang
Author:
Neil Sandham
Editor:
D. Grigoriadis
Editor:
B. Geurts
Editor:
H. Kuerten
Editor:
J. Frohlich
Editor:
V. Armenio
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