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September 19, 2025Proceedings

Numerical study of flow and acoustic modal characteristics of fan tonal source based on DMD

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Authors

LZLiangji ZhangHWHongmei WangWQWeiyang Qiao

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Overview

Numerical simulation investigates fan noise and rotor-stator interactions, suggesting new duct design methods.

Key Points

  • The DMD method effectively analyzes acoustic modal characteristics, revealing significant harmonics in rotor-stator interactions.
  • CFD simulations indicate that fan tonal noise reduction may be achieved through innovative duct designs.
  • Increased harmonic frequency order correlates with enhanced interaction energy between rotor and stator in fan ducts.
  • Fan noise reduction technologies face limitations, prompting a need for advanced analytical techniques like DMD.

Cite This Study

Zhang et al. (2025) studied this question.

synapsesocial.com/papers/68d464ff31b076d99fa64bdehttps://doi.org/10.33737/gpps25-tc-157
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