繊維層フィルターによるエアロゾルの濾過における外部電場の影響

抄録

The single-fibre collection efficiency of fibrous filters with an external electric field is determined from calculations of the particle trajectory. The calculations are performed for the case in which an electric field is applied parallel to the direction of flow velocity, where the interference effect of neighboring fibres is considered. The influence of various parameters on the collection efficiency is discussed. These are the interception parameter, the fibre volume fraction and the specific dielectric constant of the fibre. Consequently, the following conclusions are obtained.
(1) The collection efficiency due to the simultaneous action of interception and electrical force is smaller than the sum of collection efficiencies due to the individual action alone.
(2) When the specific dielectric constant of the fibre is equal to unity, the collection efficiency is obtained analytically by the concept of solenoidal force field on particles.