Bubble oscillation regimes including mass transfer

Daniel Fuster (DALEMBERT)

We investigate theoretically and numerically the effect of heat and mass transfer on the dynamic response of gas-vapor bubbles. The numerical solution of the full non-linear 1D equations is compared with the analytical solution of the equations obtained for the oscillation of an spherical gas/vapor bubble in response of a weak pressure perturbation (linear solution). We identify various linear oscillation regimes as a function of an nondimensional oscillation frequency (e.g. the bubbleâ€™s Peclet number) and the vapor content. In addition we also report simulations of the oscillation of bubbles for strong perturbations that show that non-linear effects restrict even further the range of applicability of the isothermal equilibrium model when the vapor content becomes larger than a critical value.

Dernière modification : December 07 2017, 10:17:23.