邮轮烟囱排气系统噪声特性分析及开敞区域噪声预报

Analysis of Noise Characteristics of Cruise Ship Chimney Systems and Noise Prediction in Open Areas

针对邮轮烟囱排气系统引起的开敞区域噪声舒适性问题,提出了大型邮轮烟囱排气系统噪声预报的等效声学模型,开展模型试验并对等效模型进行了验证,从而建立了大型邮轮烟囱排气系统噪声预报方法。对实尺寸邮轮烟囱排气系统引起的顶层开敞区域噪声开展数值仿真,研究了实际工况下邮轮烟囱排气系统噪声特性。结果表明,基于等效声学模型的数值仿真结果与模型试验结果吻合,所提出的大型邮轮烟囱排气系统噪声预报方法合理可靠。邮轮烟囱排气系统噪声主要以低频为主,气动噪声和振动噪声共同引起的开敞区域噪声满足规范要求。

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.