title: Acoustic wave propagation in bubbly flow with gas, vapor or their mixtures.
abstract: Presence of bubbles in liquids could significantly alter the acoustic waves in terms of wave speed and attenuation. In the present paper, acoustic wave propagation in bubbly flows with gas, vapor and gas/vapor mixtures is theoretically investigated in a wide range of parameters (including frequency, bubble radius, void fraction, and vapor mass fraction). Our finding reveals two types of wave propagation behavior depending on the vapor mass fraction. Furthermore, the minimum wave speed (required for the closure of cavitation modelling in the sonochemical reactor design) is analyzed and the influences of paramount parameters on it are quantitatively discussed.
authors.affiliation: Key Laboratory of Condition Monitoring and Control for Power Plant Equipment, Ministry of Education, North China Electric Power University, Beijing 102206, China. Electronic address: y.zhang@ncepu.edu.cn.
authors.forename: Yuning
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Condition Monitoring and Control for Power Plant Equipment, Ministry of Education, North China Electric Power University, Beijing 102206, China.
authors.forename: Zhongyu
authors.initials: Z
authors.lastname: Guo
authors.affiliation: Key Laboratory of Condition Monitoring and Control for Power Plant Equipment, Ministry of Education, North China Electric Power University, Beijing 102206, China.
authors.forename: Yuhang
authors.initials: Y
authors.lastname: Gao
authors.affiliation: Key Laboratory of Condition Monitoring and Control for Power Plant Equipment, Ministry of Education, North China Electric Power University, Beijing 102206, China.
authors.forename: Xiaoze
authors.initials: X
authors.lastname: Du
keywords: Cavitation; Gas bubbles; Mixture bubbles; Vapor bubbles; Wave propagation; Wave speed