Analysis of Noise Characteristics of Cruise Ship Chimney Systems and Noise Prediction in Open Areas
In order to address the noise comfort issue in the open area caused by the cruise ship chimney exhaust system,the paper proposes an equivalent acoustic model of the cruise ship chimney exhaust system.And a model experiment is conducted to validate the equivalent model,thereby establishing a noise prediction method for the cruise ship chimney exhaust system.The paper also carries out numerical prediction on the noise in the open area caused by the full-scale cruise ship chimney exhaust system and studies the acoustic characteristics of the noise at the actual working condition.The results show that the numerical simulation results based on the equivalent acoustic model are consistent with the model test results,and the noise prediction method for the large cruise ship funnel exhaust system proposed in this paper is rational.The noise of the cruise ship funnel exhaust system is mainly at the low frequency,and the noise in the open area caused by the combined aeroacoustic and vibration noise of the cruise ship funnel exhaust system meets the specification requirements.
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