TY - GEN
T1 - Underwater High-Speed Gas Jet Flow Field and Noise Simulation under Variable Pressure Gradient
AU - Song, Yuyuan
AU - Shen, Xiaohong
AU - Qin, Kan
AU - Wang, Haiyan
AU - Yao, Haiyang
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - The study of underwater high-speed gas-fueled vehicle jet flow field and noise is crucial for underwater noise reduction and the design of future ultra-high-speed vehicles. However, due to complex interactions between incompressible fluid and high-pressure jet gas, the diffusion process exhibits phenomena like unstable gas-liquid mixing and complex wave structures inside the jet, posing challenges for flow field and noise simulation. This paper focuses on simulating the flow field structure and noise characteristics of high-speed gas-fueled vehicles during vertical ascent underwater at varying operating speeds. A two-dimensional axisymmetric numerical model is established using the Volume of Fluids (VOF) method, and simulations are conducted at operating speeds of 30m/s, 60m/s, and 90m/s, accounting for environmental pressure variations. The Large Eddy Simulation (LES) method is employed to obtain jet flow field characteristics, and the FW-H method is used to analyze jet noise characteristics. The research results indicate that as the operating speed increases, the pressure fluctuation range at the nozzle exit widens, and the velocity at the nozzle exit decreases. Regarding jet noise, the engine follows sound attenuation laws with distance and frequency even at high operating speeds. Furthermore, higher operating speeds result in elevated peak noise levels, while noise differences at different speeds become less apparent as the frequency rises.
AB - The study of underwater high-speed gas-fueled vehicle jet flow field and noise is crucial for underwater noise reduction and the design of future ultra-high-speed vehicles. However, due to complex interactions between incompressible fluid and high-pressure jet gas, the diffusion process exhibits phenomena like unstable gas-liquid mixing and complex wave structures inside the jet, posing challenges for flow field and noise simulation. This paper focuses on simulating the flow field structure and noise characteristics of high-speed gas-fueled vehicles during vertical ascent underwater at varying operating speeds. A two-dimensional axisymmetric numerical model is established using the Volume of Fluids (VOF) method, and simulations are conducted at operating speeds of 30m/s, 60m/s, and 90m/s, accounting for environmental pressure variations. The Large Eddy Simulation (LES) method is employed to obtain jet flow field characteristics, and the FW-H method is used to analyze jet noise characteristics. The research results indicate that as the operating speed increases, the pressure fluctuation range at the nozzle exit widens, and the velocity at the nozzle exit decreases. Regarding jet noise, the engine follows sound attenuation laws with distance and frequency even at high operating speeds. Furthermore, higher operating speeds result in elevated peak noise levels, while noise differences at different speeds become less apparent as the frequency rises.
KW - ambient pressure
KW - jet flow field
KW - jet noise
KW - underwater high-speed gas jet
UR - http://www.scopus.com/inward/record.url?scp=85184851821&partnerID=8YFLogxK
U2 - 10.1109/ICSPCC59353.2023.10400237
DO - 10.1109/ICSPCC59353.2023.10400237
M3 - 会议稿件
AN - SCOPUS:85184851821
T3 - Proceedings of 2023 IEEE International Conference on Signal Processing, Communications and Computing, ICSPCC 2023
BT - Proceedings of 2023 IEEE International Conference on Signal Processing, Communications and Computing, ICSPCC 2023
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2023 IEEE International Conference on Signal Processing, Communications and Computing, ICSPCC 2023
Y2 - 14 November 2023 through 17 November 2023
ER -