4.7 Article

An investigation of the flow structure beneath solitary waves with constant vorticity on a conducting fluid under normal electric fields

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PHYSICS OF FLUIDS
卷 35, 期 3, 页码 -

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AIP Publishing
DOI: 10.1063/5.0142779

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In this paper, the flow structure beneath solitary waves with constant vorticity on an inviscid conducting fluid bounded above by a dielectric gas under normal electric fields was numerically investigated. It was found that the location of stagnation points does not change significantly with a variation of the electric field for elevation solitary waves, while the electric field acts as a catalyzer that makes possible the appearance of stagnation points for depression solitary waves.
The motion of an interface separating two fluids under the effect of electric fields is a subject that has picked the attention of researchers from different areas. While there is an abundance of studies investigating the free surface wave properties, very few works have examined the associated velocity field within the bulk of the fluid. Therefore, in this paper, we investigate numerically the flow structure beneath solitary waves with constant vorticity on an inviscid conducting fluid bounded above by a dielectric gas under normal electric fields in the framework of a weakly nonlinear theory. Elevation and depression solitary waves with constant vorticity are computed by a pseudo-spectral method, and a parameter sweep on the intensity of the electric field is carried out to study its role in the appearance of stagnation points. We find that for elevation solitary waves, the location of stagnation points does not change significantly with a variation of the electric field. For depression solitary waves, on the other hand, the electric field acts as a catalyzer that makes possible the appearance of stagnation points. In the sense that in its absence, there are no stagnation points.

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