Tejedor Sastre, María TeresaLouisnard, OlivierVanhille, Christian2024-04-022024-04-022022-08-01M. T. Tejedor Sastre, O. Louisnard, and C. Vanhille, “Generation of subharmonics in acoustic resonators containing bubbly liquids: A numerical study of the excitation threshold and hysteretic behavior,” Ultrasonics Sonochemistry, vol. 88, p. 106068, 2022.1350-4177https://hdl.handle.net/10115/31879In 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.engAttribution-NonCommercial-NoDerivs 4.0 Internationalhttps://creativecommons.org/licenses/by-nc-nd/4.0/Bubbly liquidsNonlinear acousticsSubharmonicsHysteresisinfo:eu-repo/semantics/article10.1016/j.ultsonch.2022.106068info:eu-repo/semantics/openAccess