On the Estimation of the Surface Elevation of Regular and Irregular Waves Using the Velocity Field of Bubbles

Article


Vargas, D., Jayaratne, R., Mendoza, E. and Silva, R. 2020. On the Estimation of the Surface Elevation of Regular and Irregular Waves Using the Velocity Field of Bubbles. Journal of Marine Science and Engineering. 8 (Art. 88).
AuthorsVargas, D., Jayaratne, R., Mendoza, E. and Silva, R.
Abstract

This paper describes a new set of experiments focused on estimating time series of the free surface elevation of water (FSEW) from velocities recorded by submerged air bubbles under regular and irregular waves using a low-cost non-intrusive technique. The main purpose is to compute wave heights and periods using time series of velocities recorded at any depth. The velocities were taken from the tracking of a bubble curtain with only one high-speed digital video camera and a bubble generator. These experiments eliminate the need of intrusive instruments while the methodology can also be applied if the free surface is not visible or even if only part of the depth can be recorded. The estimation of the FSEW was successful for regular waves and reasonably accurate for irregular waves. Moreover, the algorithm to reconstruct the FSEW showed better results for larger wave amplitudes.

JournalJournal of Marine Science and Engineering
Journal citation8 (Art. 88)
ISSN2077-1312
Year2020
PublisherMDPI
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Anyone
Digital Object Identifier (DOI)doi:10.3390/jmse8020088
Web address (URL)https://doi.org/10.3390/jmse8020088
Publication dates
Online02 Feb 2020
Publication process dates
Accepted29 Jan 2020
Deposited07 Feb 2020
FunderConsejo Nacional de Ciencia y Tecnología
Copyright holder© 2020 The Authors
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