Numerical simulation of the impact induced by liquid level on the amplitude of pseudo-Rayleigh waves at the fluid-solid interface

Tuo Liu, Wenxiao Qiao, Xiaohua Che, Yuhong Zhao

Research output: Journal article publicationJournal articleAcademic researchpeer-review

Abstract

A gas-liquid interface and its changes in position have impacts on the propagation and amplitude of pseudo-Rayleigh waves at the fluid-solid interface, which is studied in this paper. A numerical simulation (finite-difference method) is performed to model the surface wave of different gas-liquid interface position 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 simulation result shows that, the influence of the scattering effect of gas-liquid interface itself very slightly contributes to the amplitude of pseudo-Rayleigh waves, and the predominant cause of attenuation is the energy leak; with the gas-liquid interface position increases, the amplitude of pseudo-Rayleigh wave pulse declines exponentially and its central frequency becomes lower. This result can be developed into a method for liquid level detection using the amplitude of pseudo-Rayleigh waves.

Original languageEnglish
Pages (from-to)687-693
Number of pages7
JournalShengxue Xuebao/Acta Acustica
Volume38
Issue number6
Publication statusPublished - Nov 2013
Externally publishedYes

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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