The problem of electromagnetic forces in polarizable fluids is discussed and classical formulas for volume force density (Kelvin, Helmholtz) are reviewed. The general problem of hydrostatic equilibrium of a liquid dielectric subject to electric field is formulated. On the basis of this formulation, the displacement of a linear dielectric fluid subject to the field produced by planar electrodes dipped in the fluid is numerically computed by using finite-element methods and an appropriate fixed-point iterative technique.
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