Influence of the accommodation coefficient on nonlinear bubble oscillations
Peak pressures and temperatures for an argon-vapor bubble of as a function of the dimensionless frequency for two different pressure wave amplitudes. Mass transfer effects have a significant influence on the peak temperatures and pressures for and frequencies below 30 000 Hz.
Influence of the mass transfer model on the peak temperatures during the implosion for different bubble radius and (definition of contained in the text). The effect of mass transfer is especially important for large bubbles (of the order of ) and low frequencies even for relative low amplitudes of excitation.
Influence of the mass transfer on the peak temperatures and pressures as functions of , for a single cavitating bubble of in an ultrasonic field of 5 kHz, and for different driving pressure wave amplitudes. Peak pressures are especially sensitive to the values of beta for large .
Temporal evolutions of the bubble radius, bubble pressure at and vapor mass fraction at the interface for an initial radius of , in an ultrasonic field of 5000 Hz and . Whereas differences of the maximum radius reached at the end of the expansion are small, large differences in peak pressures are observed for different values of .
Bubble radius and dimensionless evaporation flux, , temporal evolutions for two different values of . Parameter values are the same than in Fig. 4. The interface velocity during the expansion is only moderately influenced by mass transfer. On the other hand, compression velocities are significantly affected by mass transfer and are very sensitive to the value of .
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