Characterization of the Forces, Powers and Efficiency for a Naval Hydroelectromagnetic Thruster

Abstract This paper presents a theoretical model of the hydroelectromagnetic thruster (electromagnetic three-phase induction seawater pump), which was developed from a semi-space model for an infinity conductor, where the electrically fluid - seawater occupies a semi-space, bordered by an ideally ferromagnetic wall. At the fluid surface, it is found a web of currents having density vector oriented in the direction of Oy axis, and fluid movement - considered a translational motion at constant velocity - is directed along the Ox axis. In this regard, for certain arrangements of three phase windings inductors, were performed calculations in order to estimate the forces, powers and efficiency for electromagnetic three-phase induction pump, having the seawater as induced fluid. Following the analysis of the traction force expression, it was found that it is possible to achieve a hydroelectromagnetic thruster, as a rectangular channel with the specific configuration of the three-phase windings, enabling to develop the electromagnetic traction forces for seawater as fluid induced conductor, forces comparable with propellers systems