Abstract
A semiempirical model of the electrohydrodynamic actuator operating on the basis of a dc corona discharge is proposed. The model is based on calculations of an electric field and a unipolar ion jet generated by a linear ion source on the surface of a dielectric plate and propagating along the plate in the laminar boundary layer. The ion source intensity and the potential difference on the actuator electrodes are determined experimentally. Estimates of the velocity induced by the electrohydrodynamic action in the flat-plate laminar boundary layer are obtained on the basis of the model. A comparison of the calculation results with the available experimental data confirms the adequacy of the model proposed. The effect of the adsorption properties of the dielectric surface on the distributions of the volume and surface electric discharge in the boundary layer is investigated within the framework of this model.
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