- ISSN 0258-2724
- CN 51-1277/U
- EI Compendex
- Scopus
- Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
- Chinese S&T Journal Citation Reports
- Chinese Science Citation Database
| Citation: | CHEN Yu, LIU Yiming, MAO Mao, LI Qiliang, WANG Yigang, YANG Zhigang. Influence of Underbody Parameters of High-Speed Trains on Aerodynamic Noise[J]. Journal of Southwest Jiaotong University, 2023, 58(5): 1171-1179. doi: 10.3969/j.issn.0258-2724.20220148
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In order to better perform the aerodynamic noise reduction design of high-speed trains, a 6-parametric model of the first bogie section of the high-speed train head car was established. The method designed by computational aeroacoustics and Latin hypercube sampling experiments was used, and the far-field aerodynamic noise, turbulent fluctuation power level, and acoustic power level inside the bogie cavity of 13 parametric models were obtained. The influence of underbody parameters on far-field and near-field aerodynamic noise was analyzed. The results show that the influence range of the underbody parameters on the far-field noise is 75.4–78.9 dB(A). The apron height, cowcatcher thickness, chamfer of the rear edge of the bogie cavity, and cavity length are negatively correlated with the far-field noise, while the chamfer of the leading edge of the cavity and the leading-edge included angle of the cowcatcher are positively correlated with the far-field noise. The changes in underbody parameters mainly affect the noise energy in the central frequency band of 315–1 250 Hz. The cowcatcher thickness and leading-edge included angle are negatively correlated with far-field noise, turbulent fluctuation power level, and acoustic power level inside the bogie cavity. The apron height is negatively correlated with the far-field noise and the turbulent fluctuation power level inside the bogie cavity and positively correlated with the acoustic power level inside the bogie cavity.
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