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Noise spectrum characteristics of marine pump units induced by different excitation sources

Scientific reports, 2022-05, Vol.12 (1), p.8678-8678, Article 8678 [Peer Reviewed Journal]

2022. The Author(s). ;The Author(s) 2022. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;The Author(s) 2022 ;ISSN: 2045-2322 ;EISSN: 2045-2322 ;DOI: 10.1038/s41598-022-12755-8 ;PMID: 35606409

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  • Title:
    Noise spectrum characteristics of marine pump units induced by different excitation sources
  • Author: Liu, Houlin ; Zhou, Runze ; Pan, Qi ; Dong, Liang ; Ma, Qijiang ; Cheng, ZhiMing ; Wang, Xiaolin
  • Subjects: Acoustics ; Computer applications ; Noise ; Sound ; Spatial distribution
  • Is Part Of: Scientific reports, 2022-05, Vol.12 (1), p.8678-8678, Article 8678
  • Description: To study the noise spectrum characteristics of marine pump units induced by different excitation sources, a computational aeroacoustic (CAA) model of the internal and external field noise of a marine pump was established. The coupled acoustic-vibration method was used to obtain the spectrum characteristics of internal and external field noise. The accuracy and feasibility of the simulation method for noise prediction were confirmed through a noise test. Due to the different mediums in the internal and external fields of the marine pump, an external field acoustic model was established based on the automatically matched layer (AML) technology. The spectral characteristics of different excitation sources and the spatial distribution of the radiated sound field were analyzed, and the contribution of different sound source excitations to the internal and external sound field was revealed. The results show that the main frequency of the internal field noise generated by different excitations is at the blade passing frequency, and the internal field noise induced by the dipole acoustic excitations dominates at 180.6 dB. For the external field noise, the main frequency is still located at the blade passing frequency. The radiation noise induced by the fluid excitation (139.2 dB) is higher than that induced by the dipole excitations (surface dipole, 136.3 dB; rotating dipole, 137.3 dB).
  • Publisher: England: Nature Publishing Group
  • Language: English
  • Identifier: ISSN: 2045-2322
    EISSN: 2045-2322
    DOI: 10.1038/s41598-022-12755-8
    PMID: 35606409
  • Source: PubMed Central
    ProQuest Central
    DOAJ Directory of Open Access Journals
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