Ionic wind occurs with corona discharge. Knowledge of the ionic wind in a machine is necessary for a measure of the degradation of the image that originates from the generation products on corona discharge. We investigate the characteristics of the ionic wind in the neighborhood of a corona device through Computational Fluid Dynamics to better understand this phenomenon. Various flow characteristics have been found. A λ-shaped flow appears on a cross section in the fan-off case. Several vortices are induced by the λ-shaped flow. Static pressure descends along the wire. We also find three-dimensional features. There is a countercurrent at both ends of the corona device. Momentum is axially transported. Our numerical calculations correlate well with our experimental results by Particle Image Velocimetry (PIV) and smokes. The λ-shaped flow appears also on a cross section in the fan-on case, while the flow rate of the whole system is hardly changed. The ionic wind locally has an influence on the flow field in the neighborhood of the corona device.