A method for liquid level detection using the amplitude of leaky-rayleigh waves

Tuo Liu, Wenxiao Qiao, Xiaohua Che

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

Based on the attenuation characteristic of leaky-Rayleigh waves at the fluid-solid interface, we propose a method for liquid level detection using the amplitude of leaky-Rayleigh waves. A finite-difference modeling is performed to investigate the impact of different liquid level on the amplitude of leaky-Rayleigh wave generated by a near-surface impulsive plane source in the solid with vibration direction perpendicular to the fluid-solid interface, through which the influence of scattering brought by the gas-liquid interface itself and the energy leak in the propagation process is discussed. The numerical simulation result shows that the influence of the scattering effect of a gas-liquid interface itself very slightly contributes to the amplitude of the leaky-Rayleigh wave and the predominant cause of the attenuation is the energy leak; with the liquid level increases, the amplitude of leaky-Rayleigh wave pulse declines exponentially and its central frequency becomes lower. From this the correlation between the amplitude of leaky-Rayleigh wave and the liquid level is built. We further conduct an experiment, whose result is consistent with our modeling result despite some slight difference in the variation range of the amplitude and the frequency shift. Thus, the feasibility of our method is proved.

Original languageEnglish
Title of host publication21st International Congress on Sound and Vibration 2014, ICSV 2014
PublisherInternational Institute of Acoustics and Vibrations
Pages2647-2654
Number of pages8
ISBN (Electronic)9781634392389
Publication statusPublished - 2014
Externally publishedYes
Event21st International Congress on Sound and Vibration 2014, ICSV 2014 - Beijing, China
Duration: 13 Jul 201417 Jul 2014

Publication series

Name21st International Congress on Sound and Vibration 2014, ICSV 2014
Volume3

Conference

Conference21st International Congress on Sound and Vibration 2014, ICSV 2014
Country/TerritoryChina
CityBeijing
Period13/07/1417/07/14

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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