Abstract
It has been very important to resolve aerodynamic and aeroacoustic problems relating to pantographs on high-speed trains. In this study, the authors attempted to reduce aerodynamic noise generated by the pantograph by using synthetic jet actuators. Numerical and experimental test results indicate that the synthetic jets can stabilize flow around a pantograph head, which is one of the dominant noise source of the pantograph, resulting in reduction of its Aeolian tone.
