Abstract
This study deals with the aerodynamic sound, especially the aeolian tone. One of the problems with the aerodynamic sound, noise reduction along a railway line is significant engineering issue for further speed-up of a high-speed train. In particular, a pantograph is one of the main aerodynamic noise sources of a high-speed train. In this paper, the aerodynamic sound and the wake flow of the combinational inclined circular cylinder are experimentally and numerically investigated in knuckle upstream and knuckle downstream. Also, we suggest that the rough surface interacts with the aerodynamic sound generated from the model. Here, it is considered that the comparison of aerodynamic sound between the model with the rough and smooth surfaces. Consequently, the noise reduction method is effective that the model with the rough surface.
