Scholarlink

<p>This study evaluates the noise reduction performance of active noise control (ANC) for propeller noise with unsteady blade motion through experiments and predicts sound field changes using simulations. Propeller noise is modeled using a multi-pole approach, and ANC simulations are validated for steady rotational speed with experimental results. Noise reduction and sound field changes for cases with stochastic rotational speeds are also predicted. The findings reveal that ANC performance for unsteady blade motion is diminished compared to steady rotational speeds and confirm that ANC simulations can estimate noise reduction performance, differing from experimental results by only −5.0 dB. Furthermore, the study reveals that increasing the sampling frequency improves ANC performance, although the noise reduction area does not expand. Overall, these results demonstrate the potential of ANC simulations in predicting noise reduction efficacy and provide insights for designing ANC systems for propeller noise with unsteady blade motion.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Simulation-based analysis of active noise control efficacy on propeller noise with unsteady blade motion

  • 期刊论文

  • 发表日期：

    2025年5月7日

查看全文
  • Dongwook Kim,
  • Hongseok Jeong,
  • Soogab Lee,
  • Hanshin Seol

摘要

This study evaluates the noise reduction performance of active noise control (ANC) for propeller noise with unsteady blade motion through experiments and predicts sound field changes using simulations. Propeller noise is modeled using a multi-pole approach, and ANC simulations are validated for steady rotational speed with experimental results. Noise reduction and sound field changes for cases with stochastic rotational speeds are also predicted. The findings reveal that ANC performance for unsteady blade motion is diminished compared to steady rotational speeds and confirm that ANC simulations can estimate noise reduction performance, differing from experimental results by only −5.0 dB. Furthermore, the study reveals that increasing the sampling frequency improves ANC performance, although the noise reduction area does not expand. Overall, these results demonstrate the potential of ANC simulations in predicting noise reduction efficacy and provide insights for designing ANC systems for propeller noise with unsteady blade motion.