Hydraulic jumps & the role of surface tension

Edward Calver; Tristan Pryer; Alex V. Lukyanov

doi:10.1016/j.physleta.2022.128418

Hydraulic jumps & the role of surface tension

Edward Calver, Tristan Pryer, Alex V. Lukyanov

University of Reading

Research output: Contribution to journal › Article › peer-review

2 Citations (SciVal)

Abstract

Recent experiments involving generation of a hydraulic jump in liquid flows have led to a number of disputes about the role of surface tension in the process. This in turn instigated a revision of the main mechanisms and criteria of the jump formation. To clarify the issue of the surface tension effects, we have analysed liquid flows with a hydraulic jump region in the framework of a full depth-averaged thin film model (DAM). After benchmarking the model, we have performed broad parametric analysis of the problem. It has been established that while there is excellent agreement with the laminar flow observations, the surface tension effects only contribute to the shape of the transition region, but do not affect the position of the jump, that is, they are practically negligible. The results have repercussions on further developments of the jump formation theory, in particular, on the role of turbulence effects.

Original language	English
Article number	128418
Journal	Physics Letters, Section A: General, Atomic and Solid State Physics
Volume	451
Early online date	6 Sept 2022
DOIs	https://doi.org/10.1016/j.physleta.2022.128418
Publication status	Published - 5 Nov 2022

Bibliographical note

Funding Information:
The authors are grateful to Prof. D. Ian Wilson and Dr. Rajesh Bhagat for useful discussions. EC was supported through a PhD scholarship awarded by the “ EPSRC Centre for Doctoral Training in the Mathematics of Planet Earth at Imperial College London and the University of Reading” EP/L016613/1 .

Funding

The authors are grateful to Prof. D. Ian Wilson and Dr. Rajesh Bhagat for useful discussions. EC was supported through a PhD scholarship awarded by the “ EPSRC Centre for Doctoral Training in the Mathematics of Planet Earth at Imperial College London and the University of Reading” EP/L016613/1 .

Keywords

Hydraulic jumps
Regular solutions
Surface tension

ASJC Scopus subject areas

General Physics and Astronomy

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10.1016/j.physleta.2022.128418Licence: CC BY

Cite this

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title = "Hydraulic jumps & the role of surface tension",

abstract = "Recent experiments involving generation of a hydraulic jump in liquid flows have led to a number of disputes about the role of surface tension in the process. This in turn instigated a revision of the main mechanisms and criteria of the jump formation. To clarify the issue of the surface tension effects, we have analysed liquid flows with a hydraulic jump region in the framework of a full depth-averaged thin film model (DAM). After benchmarking the model, we have performed broad parametric analysis of the problem. It has been established that while there is excellent agreement with the laminar flow observations, the surface tension effects only contribute to the shape of the transition region, but do not affect the position of the jump, that is, they are practically negligible. The results have repercussions on further developments of the jump formation theory, in particular, on the role of turbulence effects.",

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N2 - Recent experiments involving generation of a hydraulic jump in liquid flows have led to a number of disputes about the role of surface tension in the process. This in turn instigated a revision of the main mechanisms and criteria of the jump formation. To clarify the issue of the surface tension effects, we have analysed liquid flows with a hydraulic jump region in the framework of a full depth-averaged thin film model (DAM). After benchmarking the model, we have performed broad parametric analysis of the problem. It has been established that while there is excellent agreement with the laminar flow observations, the surface tension effects only contribute to the shape of the transition region, but do not affect the position of the jump, that is, they are practically negligible. The results have repercussions on further developments of the jump formation theory, in particular, on the role of turbulence effects.

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Hydraulic jumps & the role of surface tension

Abstract

Bibliographical note

Funding

Keywords

ASJC Scopus subject areas

Access to Document

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