Interelectrode gap size influence on EHD flow kinematics

In this work EHD flow in the wire-plane electrode arrangement is considered and numerical simulation results are presented. The information about kinematic and charge structure in the electrode layers and whole gap, while changing interelectrode space from 0.1 to 10 cm, is presented by us. As in the experimental investigations, at small interelectrode gap length (less then 0.5 cm) the considerable velocity decreasing was detected. EHD transforming efficacy lowering was described with the help of acceleration and breaking zones overlap. The obtained zone dimensions are also in the good agreement with the experimental data. The distance between the acceleration maximum and the active electrode surface is equal to the reduced pressure zone length. This zone length does not exceed the active electrode radius.