227 ポイントコロナ放電における3次元静電流体シュミレーション(OS-5 環境負荷ミニマイズのための熱流体・環境工学の展開(4))

概要

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The industrial electrostatic precipitators (ESPs) employ negative corona or point corona, which generates discrete discharge along the wire electrodes. Three-dimensional analysis of electrical characteristics and electrohydrodynamics is essential to describe the ESPs having tuft/point coronas. The distribution of the secondary flow (electric wind) is to form a donuts-shape ring from each tuft/point, extending further to inflow and outflow direction. When the primary flow exits, the flow interaction takes place, depending upon EHD number which is defined as the ratio of characteristic electric wind velocity to the primary flow velocity. The electrohydrodynamic flow field is to form a pair of spiral vortex rings, like Goertler vortices in the direction of the gas flow. The effects of electrohydrodynamics on particle motion and ESP theory were discussed.
社団法人日本機械学会の論文
2004-03-17