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首页> 外文期刊>Journal of Imaging Science and Technology >Computational Fluid Dynamics of Ionic Wind in a Corona Device in Electrophotography-(1)
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Computational Fluid Dynamics of Ionic Wind in a Corona Device in Electrophotography-(1)

机译：电子照相中电晕装置中离子风的计算流体动力学-（1）

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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.
机译：离子风随着电晕放电而发生。机器中的离子风知识对于测量源自电晕放电生成产物的图像质量下降是必要的。我们通过计算流体动力学研究电晕装置附近离子风的特征，以更好地理解这一现象。已经发现各种流动特性。在扇形壳体的横截面上出现λ形的流。 λ形流动会引起几个涡旋。静压力沿导线下降。我们还发现了三维特征。电晕装置的两端存在逆流。动量是轴向输送的。我们的数值计算与通过粒子图像测速（PIV）和烟雾的实验结果很好地相关。扇形情况下，截面也呈λ状流动，整个系统的流量几乎不变。离子风局部地影响电晕装置附近的流场。

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