Oscilace tvarů stoupajících bublin

We have developed a mathematical model of this motion including two parameters: eccentricity of the ellipsoid and amplitude of the wobbling. Assuming statistically uniform rotation of the bubble, the model results probability density for all related quantities, i.e.: vertical and horizontal dimensions, equivalent ellipse axes, angle of inclination. By comparison of experimental data with the model predictions, parameters of the model have been evaluated. Evidently, gas bubble shape cannot be described by the common correlation suitable for drops