101 The examination 2 of the aerodynamics noise from the inside of the traction motor

Abstract

Last time, we reported the applicability of the simulation using the fluid sound analysis based on comparison of the simulation result with the measured result of the noise of the actual traction motor. (hereafter referred to as device) This time, we report that by optimizing the noise source condition, the simulation result has approached the measured result of the noise of the device. Now we can design an optimum device without manufacturing the device, based on estimation of the noise generation status inside the device by the simulation using the fluid sound analysis.