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.
Kazuhiro Mori, Hideki Okamoto, Nobuyuki Hirooka, "Computational Fluid Dynamics of Ionic Wind in a Corona Device in Electrophotography-(1)" in Journal of Imaging Science and Technology, 2004, pp 465 - 472, https://doi.org/10.2352/J.ImagingSci.Technol.2004.48.6.art00002