Research on radiation noise field reconstruction of underwater vehicle shell structure

When studying the radiation noise of underwater vehicle, it is more realistic to simulate the underwater vehicle by using the volume source shell structure model. However, in the process of using COMSOL to simulate the radiation noise of the underwater vehicle shell structure, the far field calculation cannot be realized with the software because the calculation amount is too large. This paper proposes to measure the noise of underwater vehicle shell structure model in the near field. According to the theory of acoustic holographic and the idea of equivalent source, it is achievable to obtain the equivalent sound source of underwater vehicle shell structure noise source, and thus realizing sound field reconstruction. Studies have shown that underwater vehicle radiation noise field reconstruction and far-field calculation can be achieved by transformation within the tolerance of error. At the same time, this paper also compares the reconstructed sound fields obtained by different methods.