The Flow around a Rotating Cone in a Casing : For the Case When the Cone Vertex Angle is 60°

Abstract

The velocity distribution around a rotating cone in a casing, and the pressure distribution on the casing wall are measured for a variety of combinations of the clearance ratio and the throughflowrate. The cone vertex angle, 2_θ, used in the experiment, is 60°. The results of the velocity measurement for a large clearance ratio show the presence of a potential core in the flow field. The ratio of the angular speed of the potential core to that of the rotating cone, K, is almost the same as for the case of a rotating disk, if C_q·sinθ is kept constant (C_q is the dimensionless throughflow rate). The pressure distribution and the axial thrust coefficient are almost the same as those for a rotating disk and they are independent of the Reynolds number R_e, when C_q·sinθ·R_e^-0.8 is kept constant.