August 18, 2025MachinesOpen Access

Investigation of Blade Root Clearance Flow Effects on Pressure Fluctuations in an Axial Flow Pump

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Investigation reveals how blade root clearance influences pressure pulsations in axial flow pumps, indicating complex flow dynamics.

Increasing blade root clearance reduces peak-to-peak pressure amplitude and fundamental frequency magnitude, improving hydraulic stability.
Flow simulation predictions under various conditions highlight significant influence on pressure pulsation characteristics within the pump.
Unsteady RANS simulations and Fast Fourier Transform analysis were utilized to examine the effects of design modifications on internal flow behavior.
Findings suggest that optimizing blade root clearance is key for effective leakage control and pressure management in axial flow systems.

Meng et al. (2025) studied this question.

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