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

LU Ding-ding; FU Jian

doi:10.11993/j.issn.1673-1948.2016.06.002

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

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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

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

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

doi: 10.11993/j.issn.1673-1948.2016.06.002

LU Ding-ding¹,
FU Jian²

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

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.
- pump-jet propulsor,
- duct,
- rotor,
- sound field,
- point source model,
- boundary element method

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References(14)

References

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

doi: 10.11993/j.issn.1673-1948.2016.06.002

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

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