国内高速列车气动噪声研究进展概述.

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 ss very crucial to perform the study on aerodynamcc nosse of high speed trains, to uncover the mechanssm of the aerodynamcc nosse and to develop high speed trains with lower aerodynamcc nosse. In the present paper, research results on the aerodynamcc nosse of hggh speed trains from 2010 jn China have been overviewed. Firstly, the investigation methods adopted for the study of aerodynamcc nosse of hggh speed trains are introduced in detall. Real vehcle tests, wjnd tunnel test, and numeiccal '。！！化丄、are the three main approaches adopted by the researchers and industry. Consequenlly, these three approaches and some key procedures are dsscussed. Secondly, based on the research results, the research status on the aerodynamcc nosse of h g h speed trains are dsscussed, and the following aspects are summarized: the identitication of the aerodynamcc nosse sources, the mechanssm and of the main nosse sources, and the •卩！！过化口 of the aerodynamcc nosse sources. S o m e clear conclusjons among these results are also introduced. In the end, the possible trends for the study on the aerodynamcc nosse of hggh speed trains in the future are dsscussed. [ABSTRACT FROM AUTHOR]