Study on the Broadband Spectrum of Propeller Thrust in Non-Uniform Turbulence

doi:10.7652/xjtuxb201803005

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Study on the Broadband Spectrum of Propeller Thrust in Non-Uniform Turbulence

更新时间：2025-07-09

- Study on the Broadband Spectrum of Propeller Thrust in Non-Uniform Turbulence
- Vol. 52, Issue 3, Pages: 34-40(2018)
- 作者机构：
  
  海军工程大学舰船工程系,武汉,430033
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201803005
  CLC： U661.1
- Online First：10 March 2018，
  
  Published：2018
- 稿件说明：
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Study on the Broadband Spectrum of Propeller Thrust in Non-Uniform Turbulence[J]. 2018, 52(3): 34-40.
DOI：

Study on the Broadband Spectrum of Propeller Thrust in Non-Uniform Turbulence[J]. 2018, 52(3): 34-40. DOI： 10.7652/xjtuxb201803005.

摘要

针对螺旋桨在湍流中的非定常激振力问题

提出了改进的相关性法

即在相关性法基础上

通过考虑螺旋桨抽吸作用导致的湍流涡拉伸变形的影响

引入3个方向的拉伸系数

推导出均匀和非均匀湍流中螺旋桨激振力宽频公式。研究结果表明:对于均匀湍流

使用10桨叶螺旋桨模型

采用改进的相关性法能较好地预报螺旋桨激振力宽频谱

特别是在叶频处与试验结果吻合较好; 对于非均匀湍流

安置在螺旋桨前的导流片不会影响激振力宽频谱波峰的位置

该位置取决于叶频的大小。

Abstract

A modified correlation approach is introduced and deduced to analyze the unsteady thrust problem of propeller in turbulence. Based on the traditional method

the modified correlation approach considered the effect of distortion of turbulent eddies resulting from the pumping action of propeller and introduced stretched coefficients in three directions. The propeller thrust spectrum function in uniform and non-uniform turbulence conditions are deduced. The results show that

for uniform turbulence

ten-bladed propeller model is suggested and the modified correlation approach has a better agreement with the experimental results

especially at blade frequency. For non-uniform turbulence

the prerotation vane installed in front of the propeller has no effect on the position of the peak in thrust spectrum

and the peak position depends on the blade frequency.

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references

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