Abstract
The aim of the present study is to clarify the flow characteristics of the narrow gap between the inner rotating cylinder and the stationary coaxial cylinder which simulates the geometry of the rotor and the stator of an electric vehicle (EV) motor. In the present study, the flow of the rotor cylinder surface and the region of the rotor end part which is the space between rotor edge face and stator edge face are visualized with Kalliroscope flakes. As a result, it is suggested that the flow of the stator edge face influenced the flow on the rotor cylinder surface with Re applied the experimental parameter increasing.
