Investigating high-speed liquid impingement with full-field measurements
Investigating high-speed liquid impingement with full-field measurements
Repeated high-speed liquid impingement on solid surfaces results in erosion that can have undesirable consequences. In recent years, the capacity of model predictions has exceeded the experimental measurements of an impingement; this work closes the gap. Using the grid method, tens of thousands of individual measurements of surface displacement were taken of the response of a polymethylmethacrylate test specimen to the impingement of a high-speed (233 m s−1) curved-fronted water jet. The full-field measurements were taken at a rate of 5 MHz and interpreted using two models based on differing sets of assumptions. The results support the current qualitative description of a high-speed impingement. However, the widespread assumption of a rigid solid surface in existing analysis and modelling was found to be inaccurate: only the model that recognized the effect of the compliance of the solid surface was successful in predicting the measured temporal and spatial variation in displacement and acceleration. This model predicted that the energy absorbed by the solid surface was less than 0.3% of the total kinetic energy of the equivalent droplet impingement.
full-field measurements, grid method, liquid impingement, ultra-high-speed imaging, water droplet erosion
Burson-Thomas, C.B.
2bacf260-3637-4943-9816-3d8f18c24eb7
Harvey, T.J.
3b94322b-18da-4de8-b1af-56d202677e04
Fletcher, L.
48dca64b-f93c-4655-9205-eaf4e74be90c
Wellman, R.
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Pierron, F.
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Wood, R.J.K.
d9523d31-41a8-459a-8831-70e29ffe8a73
27 September 2023
Burson-Thomas, C.B.
2bacf260-3637-4943-9816-3d8f18c24eb7
Harvey, T.J.
3b94322b-18da-4de8-b1af-56d202677e04
Fletcher, L.
48dca64b-f93c-4655-9205-eaf4e74be90c
Wellman, R.
933354f5-e4ff-448e-b6b5-4caef14187a4
Pierron, F.
a1fb4a70-6f34-4625-bc23-fcb6996b79b4
Wood, R.J.K.
d9523d31-41a8-459a-8831-70e29ffe8a73
Burson-Thomas, C.B., Harvey, T.J., Fletcher, L., Wellman, R., Pierron, F. and Wood, R.J.K.
(2023)
Investigating high-speed liquid impingement with full-field measurements.
Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 479 (2277), [20230023].
(doi:10.1098/rspa.2023.0023).
Abstract
Repeated high-speed liquid impingement on solid surfaces results in erosion that can have undesirable consequences. In recent years, the capacity of model predictions has exceeded the experimental measurements of an impingement; this work closes the gap. Using the grid method, tens of thousands of individual measurements of surface displacement were taken of the response of a polymethylmethacrylate test specimen to the impingement of a high-speed (233 m s−1) curved-fronted water jet. The full-field measurements were taken at a rate of 5 MHz and interpreted using two models based on differing sets of assumptions. The results support the current qualitative description of a high-speed impingement. However, the widespread assumption of a rigid solid surface in existing analysis and modelling was found to be inaccurate: only the model that recognized the effect of the compliance of the solid surface was successful in predicting the measured temporal and spatial variation in displacement and acceleration. This model predicted that the energy absorbed by the solid surface was less than 0.3% of the total kinetic energy of the equivalent droplet impingement.
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burson-thomas-et-al-2023-investigating-high-speed-liquid-impingement-with-full-field-measurements
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More information
Accepted/In Press date: 25 August 2023
e-pub ahead of print date: 27 September 2023
Published date: 27 September 2023
Additional Information:
Funding Information:
This research was funded by the Engineering and Physical Sciences Research Council (EPSRC): PhD Studentship ref. 1685710 (C.B.B.-T.) and Established Career Fellowship ref. EP/L026910/1 (F.P.). Acknowledgements
Publisher Copyright:
© 2023 The Authors.
Keywords:
full-field measurements, grid method, liquid impingement, ultra-high-speed imaging, water droplet erosion
Identifiers
Local EPrints ID: 484584
URI: http://eprints.soton.ac.uk/id/eprint/484584
ISSN: 1364-5021
PURE UUID: 1287b399-ca7a-449b-8988-5f9a285c57fc
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Date deposited: 17 Nov 2023 17:51
Last modified: 06 Jun 2024 02:06
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Author:
R. Wellman
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