抄録
The objective of this study is to investigate the decay law of oscillating grid turbulence in a rotating tank. To improve the performance of rotary machines by suppressing fluid resistance, it is important to understand rotating turbulent flow. In this study, a water filled tank was rotated, and oscillating grid turbulence was generated in the rotating tank. Hereby, effect of the rotation and the grid stroke on the flow field was examined experimentally. Quantitative evaluation by PIV measurement of the flow field suggested that as rotation increase, suppression of turbulence decay increase. It was demonstrated that this phenomenon appeared more particularly at longer grid strokes.
