September 10, 2025Physics of Fluids

Clearance leakage flow on aviation oil pump performance: Entropy generation and thermal–fluid–structure interaction analysis

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This analysis quantifies the impact of clearance changes on leakage flow in aviation gear pumps, suggesting improvements for energy loss management.

Leakage flow and energy loss are significantly influenced by both radial and end clearances in aviation gear pumps.
The evolution of vortex structures is affected by factors such as circumferential velocity and pressure gradients.
A theoretical model demonstrates how temperature and pressure changes impact clearance size in pumps.
The findings provide innovative guidance for developing better leakage control methods in aviation gear pumps.

Pan et al. (2025) studied this question.

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This analysis quantifies the impact of clearance changes on leakage flow in aviation gear pumps, suggesting improvements for energy loss management.