Abstract
The two-dimensional steady flow of a gas with a unipolar charge is discussed. The parameter of electro-hydrodynamic (EHD) interaction is assumed to be small so that the electric field does not affect the gas flow. A charged grid consisting of rectilinear wires at right angles to the plane of the flow is placed in the flow, the grid being the surface of discontinuity of the EHD parameters. The structure of such a discontinuity in the cases where the wires are charged positively or negatively, and the charges of adjacent wires have different signs is analysed. In each such case, the grid may be partially or totally penetrable for the ions, or not penetrable at all. The charge-current characteristics of the grid are found, and the magnitude of the charge for which the grid becomes impenetrable is established. The relations which close the system of relations at a discontinuity are obtained.
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