TY - GEN
T1 - Flow noise around underwater axisymmetric models with Bio-Inspired Coating
AU - Zhang, Zhonggang
AU - Gao, Wei
AU - Wang, Shangzhong
AU - Ma, Binghe
AU - Luo, Jian
AU - Deng, Jinjun
N1 - Publisher Copyright:
© 2020 IEEE.
PY - 2020/10/25
Y1 - 2020/10/25
N2 - Flow noise is one major self-noise of underwater vehicles, particularly at high speed, which could also affect sonar performance. In this work, the flow noise around underwater vehicles coated with engineered bio-coating was tested in the high-speed water tunnel. The tilt bio-pillars array coatings were inspired by the shark denticle. The master template of the coating was made by backside lithography and inclined lithography. The polymeric bio-coatings were then fabricated through a micro-molding process. The fabrication method was efficient and economical. The bio-coating exhibited the ability to mitigate flow noise, especially in high frequency. The reduction of total sound pressure level up to 13.6dB in 20kHz-40kHz when Re ≈ 4.78×106. This result may verify the effect of the microstructure surface on flow-noise control.
AB - Flow noise is one major self-noise of underwater vehicles, particularly at high speed, which could also affect sonar performance. In this work, the flow noise around underwater vehicles coated with engineered bio-coating was tested in the high-speed water tunnel. The tilt bio-pillars array coatings were inspired by the shark denticle. The master template of the coating was made by backside lithography and inclined lithography. The polymeric bio-coatings were then fabricated through a micro-molding process. The fabrication method was efficient and economical. The bio-coating exhibited the ability to mitigate flow noise, especially in high frequency. The reduction of total sound pressure level up to 13.6dB in 20kHz-40kHz when Re ≈ 4.78×106. This result may verify the effect of the microstructure surface on flow-noise control.
KW - backside lithography
KW - bio-inspired surface
KW - flow noise
KW - inclined lithography
UR - https://www.scopus.com/pages/publications/85098697597
U2 - 10.1109/SENSORS47125.2020.9278895
DO - 10.1109/SENSORS47125.2020.9278895
M3 - 会议稿件
AN - SCOPUS:85098697597
T3 - Proceedings of IEEE Sensors
BT - IEEE Sensors, SENSORS 2020 - Conference Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2020 IEEE Sensors, SENSORS 2020
Y2 - 25 October 2020 through 28 October 2020
ER -