The Effect of the Surface-friction on the Wind

Abstract

In the present paper the author intends to study the effect of surface-friction on the wind flowing over a circular island. In order to discuss only the effect of surface-friction, it is assumed that the island is flat. The distribution of surface-friction is expressed by F(r), which is a function of r (radial distance from the center of the island) only. The author solved the equation of motion for the following two special cases, and illustrated the distribution of the vertical air current and transversal component of the horizontal air current in four diagrams for the case 1.