Special Session 82: Recent Advances in Nonlinear PDEs and Free Boundary Problems

The Well-posedness of Cylindrical Jets with Surface Tension
Aram Karakhanyan
The University of Edinburgh
Scotland
Co-Author(s):    Dr Yukon Huang
Abstract:
In 1879 Rayleigh studied the stability of infinite cylindrical jets, inspired by the experiments of Plateau. The principal question that Rayleigh asked is: under what circumstances the jet is stable, for small displacements. In this talk I will discuss the short time stability for the initial condition belonging to some Sobolev space, and the initial jet boundary being uniformly bounded away from the axis of symmetry. This is proved by the method of paradifferential calculus and paralinearization. The salient feature of these results is that no smallness assumption is imposed on the initial condition. The results are taken from a joint paper with Dr Yucong Huang.