The object of this work is nonstationary EHD flow modeling in a wire-plane electrode system for researching processes of space-charge formation and evolution, and the features of its movement in the interelectrode gap are investigated. The set of equations describing the modeling process is appreciably nonlinear. The final-element modeling package ANSYS was used for solving this problem. A special algorithm was developed. It was realized as a package of programs based on the approximation that the charge is “frozen” in the liquid. Results of calculations are represented as velocity vector plot evolution, pressure distributions, and EHD flow traces. A typical feature of EHD flow is the formation of a charged thin stream that crosses the interelectrode gap.