DOAJ Open Access 2022

Generation of subharmonics in acoustic resonators containing bubbly liquids: A numerical study of the excitation threshold and hysteretic behavior

María Teresa Tejedor Sastre Olivier Louisnard Christian Vanhille

Abstrak

In this paper we study the generation and behavior of subharmonics in a bubbly liquid confined in an acoustic resonator, through numerical simulations carried out at finite-amplitude acoustic pressure. Several configurations in terms of resonator length and driving frequency are considered here. Our results show that these frequency components, created from a higher-frequency signal at the source (ultrasound), are due to the nonlinearity of the medium at high acoustic-pressure amplitude and to the configuration of the resonator (geometry and boundaries). We also show that they have an amplitude-threshold dependence, which is in concordance with the literature. The response of these subharmonics to different sequences of pressure amplitudes also reveals the hysteretic nature of the bubbly liquid.

Topik & Kata Kunci

Chemistry Acoustics. Sound

Penulis (3)

María Teresa Tejedor Sastre

Olivier Louisnard

Christian Vanhille

Format Sitasi

APA MLA BibTeX

Sastre, M.T.T., Louisnard, O., Vanhille, C. (2022). Generation of subharmonics in acoustic resonators containing bubbly liquids: A numerical study of the excitation threshold and hysteretic behavior. https://doi.org/10.1016/j.ultsonch.2022.106068

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Informasi Jurnal

Tahun Terbit: 2022
Sumber Database: DOAJ
DOI: 10.1016/j.ultsonch.2022.106068
Akses: Open Access ✓