On the Capture of Fog Particles by a Circular Cylinder

[摘要] Using Shibagaki's method of numerical integration, the collection efficiency (the proportion of captured particles) of a circular cylinder is determined theoretically with sufficient accuracy for practical purpose. The obtained values differ considerably from those obtained by F. Albrecht, but nearly coincide with the approximate values computed by the author 9 years ago. The results obtained are applied to the problem of icing on the electric cable, and it is suggested that there is a certain limit to the amount of ice, which will grow in one winter season. The breadth and the density of capture along the surface of a cylinder is also discussed. Finally it is shown that the deviation from Stokes' law arises, when a fog particle approches the cylinder.

[学科分类] 大气科学