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Volume 24 Issue 6
 
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Article Navigation >  Journal of Unmanned Undersea Systems  > 2016  >  24(6): 407-411
LU Ding-ding, FU Jian. Effect of Pump-jet Propulsor Duct on Sound Field of Rotor[J]. Journal of Unmanned Undersea Systems, 2016, 24(6): 407-411. doi: 10.11993/j.issn.1673-1948.2016.06.002
Citation: LU Ding-ding, FU Jian. Effect of Pump-jet Propulsor Duct on Sound Field of Rotor[J]. Journal of Unmanned Undersea Systems, 2016, 24(6): 407-411. doi: 10.11993/j.issn.1673-1948.2016.06.002
shu

Effect of Pump-jet Propulsor Duct on Sound Field of Rotor

doi: 10.11993/j.issn.1673-1948.2016.06.002
  • 1.

    Navy Armament Department, Xi′an 710077, China

  • 2.

    Navy Submarine Academy, Qingdao 266199, China

  • Received Date: 2016-09-11
  • Rev Recd Date: 2016-10-15
  • Publish Date: 2016-12-20
    Abstract
  • The sound field generation and propagation of a pump-jet propulsor is quite different from that of a propeller because of the existence of the duct. In order to understand the sound performance of the pump-jet propulsor for its acoustic optimization design, the point source model and boundary element method are used to forecast the sound field of rotor in the duct, and the effect of the duct on the sound field is analyzed. The characteristic of rotor sound field in the duct is similar to that of the propeller, and the directivity of wide-band acoustic source level shows 8 shape. The incident sound field and scattering sound field of the rotor are quite different due to the scattering effect of the duct, resulting a remarkable effect of the duct on the sound field of the rotor in radial direction, and a neglectable effect in axial direction.

     

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