TITLE:
The Numerical Simulation of Aerodynamic Noise Generated by CRH3 Train’s Head Surface
AUTHORS:
Fanguo Kong, Jian Wang
KEYWORDS:
Aerodynamic Noise, Three Dimensional Flow Mode, Monitoring Points, Large Eddy Simulation (LES), Lighthill-Curle
JOURNAL NAME:
Open Journal of Applied Sciences,
Vol.5 No.8,
August
28,
2015
ABSTRACT: In order to solve the increasingly serious problem of railway noise which caused by the train’s speed-up, especially the problem of the dominant aerodynamic noise of the high-speed train, it’s necessary to have a numerical simulation analysis for the CRH3 train’s three dimensional flow model. Setting monitoring points in the positions that the surface curvature changes significantly, using the Large Eddy Simulation Method (LES) to have a transient simulation for the CRH3 train which is in the speed of 300 km/h and 350 km/h, applying the acoustics theory of Lighthill-Curle to predict the aerodynamic noise caused by the head of the CRH3 train. The generation and distribution of the train’s aerodynamic noise are analyzed, so as to provide some reasonable suggestions for the design of the train body.