Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : November 12, 2016 - November 13, 2016
An experiment is performed to investigate the drag-reduction effect in a turbulent channel flow on a traveling wave wall. The wall is made of a thin rubber sheet vibrating to generate a traveling wave. The rubber sheet was vertically placed at the middle of the channel. A piezoelectric actuator is used as a vibrating source. A vibration experiment with the input frequency of 120Hz is investigated to check whether or not to occur a traveling wave. Since the phase velocity does not become within the range of effective parameter for drag reduction, the pressure-drop difference between uncontrolled and controlled cases cannot be confirmed.
