Effects of different blade loading strategies applied to low specific speed tube-axial fans

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Constant-swirl blade loading distribution provides good performance at specific speeds close to 4.3.
CFD-RANS analyses were conducted to evaluate the efficiency of three fan designs with differing blade distributions.
Fans with a hub-to-tip ratio of 0.5 were tested, optimizing performance for tube-axial applications.
Results suggest alternative blade loading strategies present practical advantages for lower specific speeds.

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Experimental analysis reveals constant-swirl blade loading enhances efficiency in tube-axial fans, indicating design versatility.

Masi et al. (2025) studied this question.

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