Abstract:
As the running speed increases, aerodynamic noise gradually becomes the main noise source for high speed trains, and may act as a bottleneck for the design of new-designed high speed trains. It is very crucial to perform the study on aerodynamic noise of high speed trains, to uncover the mechanism of the aerodynamic noise and to develop high speed trains with lower aerodynamic noise. In the present paper, research results on the aerodynamic noise of high speed trains from 2010 in China have been overviewed. Firstly, the investigation methods adopted for the study of aerodynamic noise of high speed trains are introduced in detail. Real vehicle tests, wind tunnel test, and numerical simulations are the three main approaches adopted by the researchers and industry. Consequently, these three approaches and some key procedures are discussed. Secondly, based on the research results, the research status on the aerodynamic noise of high speed trains are discussed, and the following aspects are summarized:the identification of the aerodynamic noise sources, the mechanism and characteristics of the main noise sources, and the optimization of the aerodynamic noise sources. Some clear conclusions among these results are also introduced. In the end, the possible trends for the study on the aerodynamic noise of high speed trains in the future are discussed.