자유유동중에 놓인 회전하는 원추체 의 난류경계층 유동 에 관한 연구

A Study on the Axisymmetric Turbulent Boundaty Layer Over a Rotating Cone Submerged in a Free Stream

The momentum transfer in axisymmetric turbulent boundary layer over a rotating cone submerged in a free stream was studied by experiments and numerical analysis. In numerical analysis the velocity profiles were calculated by finite difference method using Prandtl mixing length concept, and the results were compared with experimental results. The agreement was good. By the numerical analysis the wall fircition coefficient was increased as the Reynolds number increased when the rotational speed is large, but the wall friction coefficient was decreased as the rotational speed increased.