Oscillation of a Vapor/Gas Bubble with Heat and Mass Transport

• Published in: Transactions of the Japan Society of Mechanical Engineers Series B Vol. 67; no. 661; pp. 2234 - 2242
• Main Authors: KAWASHIMA, Hisanobu, ICHIHARA, Mie, KAMEDA, Masaharu
• Format: Journal Article
• Language: Japanese
• Published: The Japan Society of Mechanical Engineers 2001
• Subjects: Evaporation and Condensation
• ISSN: 0387-5016; 1884-8346
• DOI: 10.1299/kikaib.67.2234

The radial motion of a spherical vapor/gas bubble in acoustic fields is investigated numerically. A mathematical model is derived with an assumption of the spatial uniformity of pressure in the bubble. The model includes the effect of spatial distribution of temperature and concentration, and heat and mass transfer at the bubble wall. The small-amplitude bubble oscillation in a hydrothermal system is simulated. The numerical results show that the spatial uniformity of pressure is valid. The amplitude of radial motion is correlated well with the nondimensional interdiffusion coefficient Dgv/ωR02 where Dgv denotes the interdiffusion coeficient, ω the driving frequency, and R0 the initial bubble radius. The phase change and gas diffusion at the bubble wall interact to each other. The interaction enhances the mass transfer at the bubble wall.