パルスエアジェットによる各種表面からの微粒子の除去　　除去パラメータによる粒子除去率の予測

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タイトル別名
  • Removal of Fine Particles from Various Surfaces by Consecutive Pulse Air Jets. Prediction of Particle Removal Efficiency with Resuspension Parameter.
  • パルス エア ジェット ニヨル カクシュ ヒョウメン カラ ノ ビリュウシ ノ
  • Prediction of Particle Removal Efficiency with Resuspension Parameter
  • 除去パラメータによる粒子除去率の予測

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抄録

Consecutive pulse air jets are effective for the removal of fine particles from various surfaces. In the present work, the removal efficiencies of spherical particles from smooth flat surfaces are correlated by introducing three parameters (i. e., the fraction of particles removed by the first air jet blow, γ1, irremovable fraction of particles, α0, and the parameter related to the fraction of particles removed by each air jet blow, C'), and the dependencies of these parameters on F* (the ratio of drag force acting on a particle to van der Waals adhesion force) are investigated. As a result, the removal efficiencies from smooth flat surfaces are successfully correlated by these parameters, and all of the parameters are well expressed as a single value function of F*. By applying these correlation equations to rough surfaces, it is found that another parameter to express the roughness of surface is necessary in predicting three parameters as a function of F*, although the removal efficiencies from rough surfaces are well correlated by the three parameters. Further, it is found that there is a particle size with a minimum removal efficiency for a given roughness of surface.

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