Abstract
Aerodynamic noise of the high speed train is essential to exterior and interior noise. Five 1:8 scaled high speed train numerical models were established. The large eddy simulation was used to obtain the body turbulent fluctuation pressure. Based on the FW-H and the APE equation, far-field noise and near-field noise were obtained respectively. The difference between the simulation results of the total sound pressure level in the far field and the wind tunnel test was less than 2.0 dB(A). Their spectrum change trends were the same, and the amplitude differences were relatively small, indicating the reliability of FW-H equation. The bogie cavity is the dominant noise source, and the OSPL of turbulent pressure level is 15 –25 dB(A) higher than that of acoustic pressure inside the bogie section. The head shape varies the flow and acoustic field of the bogie section, leading to the OSPL ranges from 77.1 dB(A) to 78.6 dB(A) in the far field.
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Li, C., Chen, Y., Xie, S., Li, X., Wang, Y., Gao, Y. (2021). Evaluation on Aerodynamic Noise of High Speed Trains with Different Streamlined Heads by LES/FW-H/APE Method. In: Degrande, G., et al. Noise and Vibration Mitigation for Rail Transportation Systems. Notes on Numerical Fluid Mechanics and Multidisciplinary Design, vol 150. Springer, Cham. https://doi.org/10.1007/978-3-030-70289-2_3
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DOI: https://doi.org/10.1007/978-3-030-70289-2_3
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