Free Surface Flows in Electrohydrodynamics with a Constant Vorticity Distribution

TL;DR

This paper investigates how constant vorticity influences free surface wave shapes in electrohydrodynamics, extending classical wave models by incorporating rotational effects and bypassing traditional boundary conditions.

Contribution

It introduces a model for free surface flows in electrohydrodynamics with constant vorticity, highlighting the role of vorticity in wave shape modifications.

Findings

Constant vorticity affects wave profiles in electrohydrodynamics.

Vertical velocity component obeys Laplace equation with standard boundary conditions.

Model bypasses the Burns condition by focusing on vertical velocity.

Abstract

In 1895, Korteweg and de Vries (KdV), derived their celebrated equation describing the motion of waves of long wavelength in shallow water. In doing so they made a number of quite reasonable assumptions, incompressibility of the water and irrotational fluid. The resulting equation, the celebrated KdV equation, has been shown to be a very reasonable description of real water waves. However there are other phenomena which have an impact on the shape of the wave, that of vorticity and viscosity. This paper examines how a constant vorticity affects the shape of waves in electrohydrodynamics. For constant vorticity, the vertical component of the velocity obeys a Laplace equation and also has the usual lower boundary condition. In making the vertical component of the velocity take central stage, the Burns condition can be thus bypassed.