0704 プロペラファンの非定常流動に基づく空力騒音の解析(OS7-1 流れと音,オーガナイズドセッション)
詳細
An experimental analysis was done about the influence of the unsteady flow on the aerodynamic noise of the ring fan. The relative velocity of the ring fan was decelerated than the current propeller fan, because the swirl of the blade tip vortex is controlled by the shroud assembly at the tip side. From results of this experiment, it clarified that the aerodynamic noise of the ring fan is decreased by the decelerating of the relative velocity in the wake and the weakened potential of the wake vortex.
