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LIU Tuo, QIAO Wenxiao, CHE Xiaohua, ZHAO Yuhong. Numerical simulation of the impact induced by liquid level on the amplitude of pseudo-Rayleigh waves at the fluid-solid interface[J]. ACTA ACUSTICA, 2013, 38(6): 687-693. DOI: 10.15949/j.cnki.0371-0025.2013.06.014
Citation: LIU Tuo, QIAO Wenxiao, CHE Xiaohua, ZHAO Yuhong. Numerical simulation of the impact induced by liquid level on the amplitude of pseudo-Rayleigh waves at the fluid-solid interface[J]. ACTA ACUSTICA, 2013, 38(6): 687-693. DOI: 10.15949/j.cnki.0371-0025.2013.06.014

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

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  • PACS: 
  • Received Date: August 29, 2012
  • Revised Date: January 06, 2013
  • Available Online: June 24, 2022
  • A gas-liquid interface and its changes in position have impacts on the propagation and amplitude of pseudoRayleigh 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.
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