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Statistical Analysis in Transient Rotor Noise Strength

  • Wangqiao Chen
  • , Siyang Zhong
  • , Zhida Ma
  • , Yuhong Li
  • , Peng Zhou
  • , Weishu He

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

Turbulent intermittency affects surface pressure and creates sporadic high-strength noise sources. In this study, we conducted experiments to demonstrate that the strength of transient rotor noise follows a log-normal distribution. We used a wavelet-based beamforming method to capture transient noise sources from 2 kHz to 10 kHz on a rotor with rotating speeds ranging from 1800 rpm to 7200 rpm. Our findings suggest that noise sources at different rotating speeds are generated by the same noise generation process, and a rotating-frequency-independent distribution function exists to unify the strength distributions of noise sources at different frequencies.

Original languageEnglish
Title of host publication30th AIAA/CEAS Aeroacoustics Conference, 2024
PublisherAmerican Institute of Aeronautics and Astronautics Inc. (AIAA)
ISBN (Print)9781624107207
DOIs
Publication statusPublished - 2024
Event30th AIAA/CEAS Aeroacoustics Conference, 2024 - Rome, Italy
Duration: 4 Jun 20247 Jun 2024

Publication series

Name30th AIAA/CEAS Aeroacoustics Conference, 2024

Conference

Conference30th AIAA/CEAS Aeroacoustics Conference, 2024
Country/TerritoryItaly
CityRome
Period4/06/247/06/24

ASJC Scopus subject areas

  • Mechanical Engineering
  • Aerospace Engineering

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