The effect of surface material on the removal of particles deposited on the surface was studied using a high-speed air jet. The particle-removal experiments were conducted under various humidities. The removal efficiency for any surface material showed the maximum value at a certain relative humidity. It was found that the humidity for maximum efficiency was dependent on the surface roughness. The optimum humidity was well predicted by Kelvin's equation in which the effect of surface roughness was introduced. The variation of removal efficiencies with surface materials depended not only on the surface roughness, but also on the physical/chemical characteristics. The tendency of variation was well explained by a model in which the change in Hamaker's constant caused by adsorbed water molecules and the surface tension of bridging liquid were taken into consideration with appropriate surface characteristics. The removal efficiency in the low-humidity region was well predicted by the model.
|ジャーナル||KAGAKU KOGAKU RONBUNSHU|
|出版ステータス||Published - 1994|
ASJC Scopus subject areas
- 化学 (全般)