Abstract
Control of flow by use of synthetic jet actuators have been found to be useful for the reduction of aerodynamic noise radiated from pantograph head on high speed train. However, there was a problem that actuation noise from synthetic jet actuators occurs. This study describes the reduction method of actuation noise from synthetic jet actuators by operation in opposite phase of neighboring actuators set inside fun-scale panhead model. Noise measurement results indicate that in case of 'opposite phase', not only can aeolian tone be reduced as drastically as in case of 'in phase' but also actuation noise can be reduced significantly.
