Effect of Solidity on the Leakage Flow and Related Noise in Axial-Flow Fans with Rotating Shroud Operating at Fixed Performance

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Experimental study reveals how solidity affects leakage flow and sound spectrum in axial fans, indicating design implications.

Increasing solidity changes leakage flow direction, leading to distinct pressure non-uniformities.
Experiments show sound pressure levels vary, with peaks linked to leakage flow influenced by rotor design.
Laser Doppler Velocimetry and Particle Image Velocimetry were employed to analyze flow behavior and noise characteristics.
Findings suggest optimal blade arrangements may enhance performance and reduce noise in axial-flow fans.

Akhtar et al. (2025) studied this question.

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