2 papers
physics.flu-dyn2025
Retraction Dynamics of a Highly Viscous Liquid Sheet
Taosif Ahsan, Rodolfo Brandão, Benny Davidovitch +1
We study the one-dimensional capillary-driven retraction of a finite, planar liquid sheet in the asymptotic regime where both the Ohnesorge number and the initial len…
math-ph2025
Simply Connected Topology in Perturbed Vortices and Field-Reversed Configurations
Taosif Ahsan, Samuel A. Cohen, Alan H. Glasser
Zero-helicity vortices, such as Hill's vortex and field-reversed configurations (FRCs), have long been assumed to be toroidal in topology. This paper proves this assumption false:…