Acoustic field modeling and field characteristics of underwater high speed navigation bodies

DOI:	10.11809/bqzbgcxb2025.03.006
Keywords:	high speed navigable bodies; sound field modeling; sound field characteristic distribution; perturbed sound field; hydrodynamic properties
Abstract:	The development of complex underwater acoustic environments and stealth technology for underwater targets has placed higher demands on detection technology for high speed vehicles. Taking the key engineering problems as the core, for the far field acoustic characteristics of high speed navigable body, a numerical model of navigable body sailing with a given trajectory is established based on the finite volume method, and a new type of far field acoustic numerical computation method is adopted to compute and analyze the dynamic water pressure curves of monitoring points with different speeds and different positions. The results show that the sailing body has different speeds, but the underwater acoustic field has the same trend of decaying with distance. At the same time, the sensitivity of the disturbed sound field at different locations was analyzed, and the signal intensity of the sound field decreased by 20%~40% at 10 m away from the motion axis. The simulation results more realistically restore the underwater navigation state and far field acoustic characteristics of the high speed vehicle, and provide new ideas for underwater high speed vehicle detection research.
Issue:	Vol. 46 No. 3 (2025)
Published:	2025-03-31
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