Numerical and experimental analysis of hybrid lubrication regime for internal gear motor and pump

Pham, Trong Hoa; Weber, Jürgen; Müller, Lars; Nguyen, Dinh Tu

doi:10.1007/s12206-019-0912-y

Cited by 4 publications

(1 citation statement)

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“…However, all these works assumed a constant gap height for such film. However, the experimental findings of Pham et al [17] clearly show that in a CIGP the ring gear experiences significant eccentricity, depending on the operating conditions. This fact indicates that the constant gap height assumption might be not always realistic to provide accurate predictions for the radial lubricating films, which affect both the leakage and the hydrodynamic load estimation.…”

Section: Dinghao Pan* Andrea Vaccamentioning

confidence: 96%

Modeling of Crescent‐Type Internal Gear Pumps Considering Gear Radial Micromotion

Pan

Vacca

2022

Chem Eng & Technol

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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.

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Section: Dinghao Pan* Andrea Vaccamentioning

confidence: 96%