Digital image correlation for stereoscopic measurement of water surface dynamics in a partially filled pipe

Abstract

This paper presents a novel method for measuring three-dimensional (3D) water surface dynamics in a partially filled pipe. The study on investigation of the 3D free surface dynamics in partially filled pipes is very limited. The method involves tinting the water white with titanium dioxide so that the water surface appears like a solid surface to image-based measuring systems. This method uses a high-resolution projector to project a stochastic pattern of light onto the water surface and uses two high-resolution cameras to capture the pattern on the deformed water surface. The 3D instantaneous water surface fluctuation can be computed from the images captured by the two cameras using a standard Digital Image Correlation algorithm. It is demonstrated that the surface dynamics parameters of turbulent flow in partially filled pipes, including surface fluctuations and surface velocity, can be measured using the projector, high-resolution cameras and DIC algorithm.

Metadata

Item Type:	Article
Authors/Creators:	Wu, J. https://orcid.org/0000-0002-6807-620X Nichols, A. https://orcid.org/0000-0003-2821-621X Krynkin, A. Croft, M.
Copyright, Publisher and Additional Information:	© The Author(s) 2022. Open Access: This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visithttp://creativecommons.org/licenses/by/4.0/.
Keywords:	Digital Image Correlation; Free surface dynamics; Free surface measurement; Partially filled pipe; Water wave measurement
Dates:	Published: October 2022 Published (online): 11 May 2022 Accepted: 9 March 2022
Institution:	The University of Sheffield
Academic Units:	The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Civil and Structural Engineering (Sheffield)
Funding Information:	Funder Grant number Engineering and Physical Sciences Research Council EP/L015412/1
Depositing User:	Symplectic Sheffield
Date Deposited:	17 Jun 2022 10:08
Last Modified:	18 Oct 2022 12:41
Status:	Published
Publisher:	Springer
Refereed:	Yes
Identification Number:	10.1007/s11600-022-00792-w
Open Archives Initiative ID (OAI ID):	oai:eprints.whiterose.ac.uk:188101

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Digital image correlation for stereoscopic measurement of water surface dynamics in a partially filled pipe

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