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October 9, 2025

An Experimental Study of Flow Structures in Small Cooling Fans Using Acoustical Similarity

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Authors

SLSeungbae LeeSJSiding Jin

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Overview

This analysis investigates turbulent vortex structures and sound power levels in cooling fans, revealing acoustical relationships.

Key Points

  • The study identifies the relationship between sound power levels and volumetric flow rates in cooling fans, highlighting their performance metrics.
  • Sound power spectrum analysis decomposes into key functions, including the spectral distribution and response functions, critical for understanding fan acoustics.
  • Measurement techniques include using an ANSI test plenum and acoustic similarity laws to assess fan noise under varying operating conditions.
  • The findings indicate that rotating stall is linked to vortex formation and blockage due to leading edge separation, impacting airflow in small fans.

Cite This Study

Lee et al. (1995) studied this question.

synapsesocial.com/papers/68e7103e90569dd607ee6d8ehttps://doi.org/10.1115/imece1995-1313
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