균일(均一) 압력(壓力) 분포(分布)에 의(依)한 난류(亂流) 경계층내(境界層內) 결성(結性) 마찰력(摩擦力)의 감소화(減小化)에 관한 연구(硏究)

A Study on the Reduction of Viscous Frictional Force with Uniform Pressure Distribution in the Turbulent Boundary Layer

In this study, uniform pressure distribution with small hole on the surface of symmetric object were given to reduce the viscous frictional force. The results were as follows : 1. The velocity on upper stream were accelerated by uniform pressure distribution on symmetric objects for reducing the viscous frictional resistances. 2. The effects of the distributed small holes were reduced the viscous frictional resistances in down stream region more than upper stream due to the increasing pressure in reverse flow region. 3. The viscous skin friction on surface of symmetric objects with and without distributed small holes are effect in region of upper stream and much decreased in down stream region due to increasing of boundary layer thickness.