Chinese Journal of Ship Research, Volume. 19, Issue 5, 245(2024)

Analysis of influencing factors and prediction of aeroacoustic noise induced by cruise chimney exhaust pipelinene

Zhenyang HUANG1... Weiguo WU2, Yongshui LIN1, Cong CHEN3, Yifei WANG3, Xiaofei CAO1 and Zhaoyu WANG4 |Show fewer author(s)
Author Affiliations
  • 1School of Science, Wuhan University of Technology, Wuhan 430070, China
  • 2Green & Smart River-Sea-Going Ship Cruise and Yacht Research Center, Wuhan University of Technology, Wuhan 430063, China
  • 3CSSC Cruise Technology Development Co., Ltd., Shanghai 200137, China
  • 4China Ship Development and Design Center, Wuhan 430064, China
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    Objectives

    This study analyzes the influencing factors of the aeroacoustic noise of cruise ship chimney exhaust pipelines, and predicts the noise level in the open area of a domestic cruise ship.

    Methods

    A hybrid approach combining Large Eddy Simulation and Lighthill Analogy is used to conduct a numerical simulation of the pipeline’s aeroacoustic noise under the actual working conditions of a cruise ship. The impacts of the inlet flow rate, outlet pressure, cross-section shape and bending angle on the aerodynamic noise are studied. A real-size cruise ship chimney exhaust pipeline model is then established to analyze the main noise sources and predict the noise level in the open areaa.

    Results

    The results show that the larger the inlet velocity and bending angle, the greater the aeroacoustic noise. Furthermore, the aeroacoustic noise of a pipeline with a zero pressure-outlet is greater than that with a non-zero pressure-outlet. It is also found that the aeroacoustic noise of a rectangular cross-sectional pipeline is marginally smaller than that of a circular one. In addition, the narrowband peak frequency decreases as the bending angle increases. Except for the chimney outlet, the noise level in the open area is low.

    Conclusions

    This study has significant reference value for controlling the aeroacoustic noise of cruise ship chimney exhaust pipelines and improving passenger comfort in open areas.

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    Zhenyang HUANG, Weiguo WU, Yongshui LIN, Cong CHEN, Yifei WANG, Xiaofei CAO, Zhaoyu WANG. Analysis of influencing factors and prediction of aeroacoustic noise induced by cruise chimney exhaust pipelinene[J]. Chinese Journal of Ship Research, 2024, 19(5): 245

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    Paper Information

    Category: Marine Machinery, Electrical Equipment and Automation

    Received: May. 30, 2023

    Accepted: --

    Published Online: Mar. 14, 2025

    The Author Email:

    DOI:10.19693/j.issn.1673-3185.03387

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