Aeroacoustic characteristics of high-speed trains in open-air and tunnel conditions

Key Points

• Sound levels from high-speed trains differ in open-air versus tunnel conditions, highlighting the influence of environmental factors.
• Peak sound levels reached 103 dB in tunnel conditions, compared to lower levels in open-air settings, indicating a notable difference.
• Assessment using aeroacoustics modeling techniques helped analyze the sound behavior across varying environments.
• Results may inform design modifications for reducing noise pollution and improving rider comfort in high-speed train systems.