Lubricant Flow and Temperature Prediction in a Planetary Gearset

Dhar, Sujan; Rawool, A. S.; Ray, Sudipto; Shi, Fanghui

doi:10.4271/2011-01-1235

Cited by 7 publications

(1 citation statement)

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“…On the other hand, the application of LRA would allow studying cycloidal and planetary systems but it would require an excessive computational effort. A study on a planetary gearset can be found [117] but, in this study, many geometrical approximations were applied.…”

Section: Categorization Of Relevant Papers Exploiting the Local Remes...mentioning

confidence: 99%

Computational Fluid Dynamics Applied to Lubricated Mechanical Components: Review of the Approaches to Simulate Gears, Bearings, and Pumps

Maccioni

Concli

2020

Applied Sciences

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The lubrication of the mechanical components reduces friction, and increases the efficiency and the reliability. However, the interaction of moving components with the lubricant leads to power losses due to viscous and inertial effects. Nowadays, the study of lubricant behavior can be carried out through computational fluid dynamics (CFD) simulations. Nevertheless, the modeling of the computational domain within complex mechanical systems (e.g., ordinary, planetary and cycloidal gearboxes, roller bearings, and pumps) requires the exploitation of specific CFD techniques. In the last decades, many mesh-based or meshless approaches have been developed to deal with the complex management of the topological changes of the computational domain or the modeling of complex kinematics. This paper aims to collect and to classify the scientific literature where these approaches have been exploited for the study of lubricated mechanical systems. The goal of this research is to shed a light on the current state of the art in performing CFD analysis of these systems. Moreover, the objective of this study is to stress the limits and the capabilities of the main CFD techniques applied in this field of research. Results show the main differences in terms of accuracy achievable and the level of complexity that can be managed with the different CFD approaches.

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Section: Categorization Of Relevant Papers Exploiting the Local Remes...mentioning

confidence: 99%

Computational Fluid Dynamics Applied to Lubricated Mechanical Components: Review of the Approaches to Simulate Gears, Bearings, and Pumps

Maccioni

Concli

2020

Applied Sciences

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Quantification of External Heat Load on HEV Integrated IPMs Using the Air-Gap Shear Stress

Paar

Muetze

2017

IEEE Trans. on Ind. Applicat.

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Investigations on Spin Power Losses Generated in a Planetary Gear Set Using Thermal Network Method

Winger,

Marchesse,

Touret

et al. 2024

Lubricants

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This paper introduces an experimental approach to study the distribution of power losses in an oil jet-lubricated planetary gear set, with the aim of increasing the efficiency of these gearboxes. A thermal model is developed to estimate power losses associated with temperature distribution. This model is applied to analyze experimental data collected from a dedicated test setup. Different configurations are studied to progressively validate the thermal network. In this paper, only a configuration composed of a rotating ring gear and a fixed planet carrier is studied. This configuration enables the validation of a thermal network developed from a basic configuration where power loss sources are not numerous. The study reveals that, for this configuration, load-independent power losses are primarily attributed to hydrodynamic losses in the bearings, while the gear windage effects are of second order. The power losses are then compared to those generated by the same planetary gear set but using a rotating planet carrier. The comparison shows that the configuration composed of the rotating ring gear and fixed planet carrier produces less power loss than the other configuration.

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Lubricant Flow and Temperature Prediction in a Planetary Gearset

Cited by 7 publications

References 1 publication

Computational Fluid Dynamics Applied to Lubricated Mechanical Components: Review of the Approaches to Simulate Gears, Bearings, and Pumps

Computational Fluid Dynamics Applied to Lubricated Mechanical Components: Review of the Approaches to Simulate Gears, Bearings, and Pumps

Quantification of External Heat Load on HEV Integrated IPMs Using the Air-Gap Shear Stress

Investigations on Spin Power Losses Generated in a Planetary Gear Set Using Thermal Network Method

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