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Mid-high Frequency Refined Prediction of Ship Cabin Noise
2025, 45(6):
220-227.
At present, the noise prediction of ship cabins is mostly based on the statistical energy analysis, which calculates the average sound pressure level of the cabin, but cannot specify certain parts of the cabin. Taking into account the necessity for more precise cabin noise forecasting, this study enhances the statistical energy analysis model. It uses point sound sources in engineering as excitations, and verifies the refined method by calculating the sound pressure level of a single cabin model. On this basis, taking the sound source cabin and sound receiving cabin models as objects, the impact of the interior furniture arrangement on the cabin noise is analyzed. The calculation results show that the noise forecast in the mid-high frequency can be refined by reasonably refining the statistical energy model. The arrangement of furniture has a certain impact on cabin noise. When furniture is placed centrally, the noise level in the receiving cabin is minimized. Conversely, when furniture is positioned against the side walls, the noise level is maximized. Properly arranging furniture at strategic locations can help reduce indoor noise.
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