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ZHUANG X D, HOU J X, XIE J L, et al. Numerical analysis of ship smoke diffusion characteristics and influence on air intake under calm weather[J]. Chinese Journal of Ship Research, 2021, 16(Supp 1): 1–9. DOI: 10.19693/j.issn.1673-3185.02132
Citation: ZHUANG X D, HOU J X, XIE J L, et al. Numerical analysis of ship smoke diffusion characteristics and influence on air intake under calm weather[J]. Chinese Journal of Ship Research, 2021, 16(Supp 1): 1–9. DOI: 10.19693/j.issn.1673-3185.02132
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Numerical analysis of ship smoke diffusion characteristics and influence on air intake under calm weather

  • School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China

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  • Received Date: October 03, 2020
  • Revised Date: January 16, 2021
  • Available Online: May 25, 2021
© 2021 The Authors. Published by Editorial Office of Chinese Journal of Ship Research. Creative Commons License
This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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    • Abstract
  •   Objective  In order to prevent ship smoke from polluting the deck and air intake, a numerical analysis of ship smoke diffusion characteristics is carried out.
      Methods  First, a smoke diffusion model is established using the computational fluid dynamics (CFD) method, and statistical performance indicators are introduced to evaluate and verify the accuracy of the model. On this basis, the effect of flue gas release temperature on the ship smoke diffusion process in a calm weather environment is studied in order to understand the mechanisms of the smoke deposition and diffusion processes, and the influence of smoke on the ship's air inlet is further analyzed.
      Results  The results show that the release temperature determines the transition process of flue gas from a heavy gas cloud to a neutral gas cloud, thereby determining the diffusion/sedimentation effect. As flue gas diffuses vertically in calm weather, the pollution is concentrated in the middle of the ship; when the release temperature reaches 417K, the flue gas will not settle significantly but directly diffuse into the normal temperature environment.
      Conclusion  The results of this study can provide a theoretical basis for the design of ship exhaust parameters and air intake layout.
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