September 19, 2025MachinesOpen Access

Analysis of Flow Characteristics in a Hydrogen Circulation Pump Featuring a Variable Radius Circular Arc

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Numerical simulations reveal improved mass flow rates in hydrogen pumps with a variable-radius arc rotor, indicating enhanced operational efficiency.

The optimized rotor increases outlet mass flow rates by over 15%, showcasing significant improvements in hydrogen transport efficiency.
Flow stability remains largely unaffected by the rotor design, with pressure pulsation levels showing minimal variation compared to the baseline.
Analysis reveals that the optimized rotor leads to a more stable flow field, suppressing disturbances that impact overall performance.
Turbulent kinetic energy assessments indicate better control over vortex structures, contributing to reduced energy loss and better mechanical reliability.

Lu et al. (2025) studied this question.

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Numerical simulations reveal improved mass flow rates in hydrogen pumps with a variable-radius arc rotor, indicating enhanced operational efficiency.