Supersonic air flow due to solid-liquid impact
Supersonic air flow due to solid-liquid impact
A solid object impacting on liquid creates a liquid jet due to the collapse of the impact cavity. Using visualization experiments with smoke particles and multiscale simulations, we show that in addition, a high-speed air jet is pushed out of the cavity. Despite an impact velocity of only 1??m/s, this air jet attains supersonic speeds already when the cavity is slightly larger than 1 mm in diameter. The structure of the air flow closely resembles that of compressible flow through a nozzle—with the key difference that here the “nozzle” is a liquid cavity shrinking rapidly in time.
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Gekle, Stephan
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Peters, Ivo
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Gordillo, Jose Manuel
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van der Meer, Devaraj
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Lohse, Detlef
a4e72495-4a7c-4f36-b482-6066cb11797a
11 January 2010
Gekle, Stephan
828bf58e-4a60-4d0c-a26e-0200b2a4d577
Peters, Ivo
222d846e-e620-4017-84cb-099b14ff2d75
Gordillo, Jose Manuel
f710c69e-f939-4d18-9f55-48e882acace7
van der Meer, Devaraj
54e00557-0050-43f5-9efb-a28ea962591c
Lohse, Detlef
a4e72495-4a7c-4f36-b482-6066cb11797a
Gekle, Stephan, Peters, Ivo, Gordillo, Jose Manuel, van der Meer, Devaraj and Lohse, Detlef
(2010)
Supersonic air flow due to solid-liquid impact.
Physical Review Letters, 104 (24501), .
(doi:10.1103/physrevlett.104.024501).
Abstract
A solid object impacting on liquid creates a liquid jet due to the collapse of the impact cavity. Using visualization experiments with smoke particles and multiscale simulations, we show that in addition, a high-speed air jet is pushed out of the cavity. Despite an impact velocity of only 1??m/s, this air jet attains supersonic speeds already when the cavity is slightly larger than 1 mm in diameter. The structure of the air flow closely resembles that of compressible flow through a nozzle—with the key difference that here the “nozzle” is a liquid cavity shrinking rapidly in time.
Text
Supersonic Air Flow due to Solid-Liquid Impact.pdf
- Accepted Manuscript
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Published date: 11 January 2010
Organisations:
Aerodynamics & Flight Mechanics Group
Identifiers
Local EPrints ID: 399964
URI: http://eprints.soton.ac.uk/id/eprint/399964
PURE UUID: 3223343c-dbd4-46f7-8d28-3754e81d7819
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Date deposited: 08 Sep 2016 15:47
Last modified: 15 Mar 2024 03:52
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Contributors
Author:
Stephan Gekle
Author:
Jose Manuel Gordillo
Author:
Devaraj van der Meer
Author:
Detlef Lohse
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