抄録
Developing processes of flows in Taylor-Couette system between two cylinders are investigated by a three-dimensional numerical method. The length of cylinders is short and it is comparable with the gap width between cylinders. The inner cylinder suddenly begins to rotate, and the outer cylinder and end walls of cylinders are stationary. In fully developed flows, the normal two-cell mode, anomalous one-cell mode, twin-cell mode and time-dependent mode appear. A new method which estimates the variation of the circumferential velocity component is introduced to identify critical points where axisymmetric flows change to three-dimensional flows. The flows of the time-dependent mode are classified into four types. The types of the mode show their characteristic power spectrum and they appear at transient steps during the flow development leading to a chaotic state.
