Aerodynamic noise characteristics of high-speed train foremost bogie section

• Published in: Journal of Central South University Vol. 27; no. 6; pp. 1802 - 1813
• Main Authors: Liang, Xi-feng, Liu, Hui-fang, Dong, Tian-yun, Yang, Zhi-gang, Tan, Xiao-ming
• Format: Journal Article
• Language: English
• Published: Changsha Central South University 01.06.2020; Springer Nature B.V
• Subjects: Aerodynamic noise; Aerodynamics; Airports; Engineering; High speed rail; Holes; Large eddy simulation; Metallic Materials; Noise control; Undercarriages; aerodynamic noise; large-eddy simulation; 转向架; 大涡模拟; 气动噪声; 流场结构; high-speed train; 高速列车; flow-field structure; bogie
• ISSN: 2095-2899; 2227-5223
• DOI: 10.1007/s11771-020-4409-8

This paper investigates the main scale analysis of the aerodynamic noise in the foremost bogie area by the large-eddy simulation (LES) and the Ffowcs Williams-Hawkings (FW-H) analogy. The mechanism of the aerodynamic noise in this area has been excavated. The aerodynamic excitation results show that the bogie divides the bogie compartment into two cavities, each of which contains a large circulating flow and presents multi-peak characteristics in the frequency domain. The far-field noise results suggest that in the speed range of 200–350 km/h, the aerodynamic noise mechanism in the bogie area is the same. Cavity noise is the main noise mechanism in the foremost bogie area, and the bogie divides the bogie cabin into two cavities, thereby changing the aerodynamic noise in this area.