1. Modeling of Crescent‐Type Internal Gear Pumps Considering Gear Radial Micromotion.
- Author
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Pan, Dinghao and Vacca, Andrea
- Subjects
- *
GEAR pumps , *UNSTEADY flow , *ISOTHERMAL efficiency , *COMPUTATIONAL fluid dynamics , *GEARING machinery vibration - Abstract
This paper presents a numerical modeling approach for investigating crescent‐type internal gear pumps (CIGPs) considering radial micromotions of both gears. The modeling approach couples a lumped parameter pressure solver on the bulk fluid domain, with a transient computational fluid dynamics film simulator based on transient gap geometries solved from the gear loading forces. Simulation results on a commercial unit shows that for a wide range of operating conditions, the model gives volumetric efficiency predictions with errors less than 2 % comparing to measurements. To highlight the importance of considering radial micromotions, the paper also provides the results achieved assuming nominal position for both gears. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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