Dynamics of a gas bubble in a straining flow: Deformation, oscillations, self-propulsion

The dynamics of a gas bubble suspended in an axisymmetric straining flow is examined with modern tools global stability analysis. complete bifurcation diagram constrained to remain trapped at the stagnation point determined. It made stable branch, along which oscillates, and unstable branch it develops non-oscillating waisted shapes prefiguring breakup. Two modes also allow free drift away from point, not only elongation axis but within compressional plane thanks specific self-propulsion mechanism.