Investigations on CFD Simulations for Predicting Windage Power Losses in Spur Gears

Marchesse, Yann; Changenet, Christophe; Ville, Fabrice; Velex, Philippe

doi:10.1115/1.4003357

Cited by 59 publications

(43 citation statements)

References 13 publications

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“…A small part of the ejection is noticed in the same region but above the tooth. This flow pattern is totally different from the one observed when considering spur gear (6,7). Indeed for this latter case the fluid enters axially by the two flanks this time and the ejection only comes from a region which is located in the middle of the gear width.…”

Section: Numerical Approach Validationmentioning

confidence: 50%

“…This windage power loss (WPL) must be therefore studied in order to mitigate its impact. Numerous investigations have been then made in the past experimentally (2,3,4) or numerically (5,6,7). Some of these studies proposed WPL model in addition to the results obtained.…”

Section: Introductionmentioning

confidence: 94%

“…where the dissipation generated by the flank is evaluated using an analytical formulation (7). The windage loss which is generated by the teeth reads:…”

Section: Wpl Analytical Modelmentioning

confidence: 99%

See 2 more Smart Citations

Preliminary numerical investigations on windage power losses generated by helical gears

Voeltzel

Marchesse

Changenet

et al. 2014

International Gear Conference 2014: 26th–28th August 2014, Lyon

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Section: Numerical Approach Validationmentioning

confidence: 50%

Section: Introductionmentioning

confidence: 94%

See 1 more Smart Citation

Preliminary numerical investigations on windage power losses generated by helical gears

Voeltzel

Marchesse

Changenet

et al. 2014

International Gear Conference 2014: 26th–28th August 2014, Lyon

Self Cite

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“…Recently, different authors among which Marchesse et al, Hill et al, and Gorla et al applied computational fluid dynamic (CFD) for such purposes. The results of different researches have shown the effectiveness of the CFD approach for the characterization and the optimization of the power losses of gears .…”

Section: Introductionmentioning

confidence: 99%

Numerical modeling of the churning power losses in planetary gearboxes: An innovative partitioning‐based meshing methodology for the application of a computational effort reduction strategy to complex gearbox configurations

Concli

Gorla

2017

Lubrication Science

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Thanks to the recent developments in the computer science, simulations are becoming an increasingly widespread approach that can help the designers in the development of new products. In the specific field of gearboxes, simulations are used mainly for structural evaluations. However, while for the structural design beside the simulations, many analytical methods and international standard are available; for the prediction of the power losses and the efficiency of gears, neither accurate analytical methods nor automated simulation tools are available. The authors work on this topic since years and have developed new methodologies based on computational fluid dynamics. With respect to general purpose commercial software, these techniques allow a significant reduction of the computational effort and have the capability to take into account particular physical phenomena that occurs in gears, such as cavitation, and for which no information are available in literature. The purpose of this paper is to introduce a new automated mesh‐partitioning strategy implemented to extend the applicability of the previously developed computational effort reduction method to complex gearboxes getting over the geometrical limitations adopted in the past. To show the capabilities of this new strategy, we simulated a planetary gearbox that represents at the same time one of the most complicated kinematic arrangements of gears and the configuration for which the numerical fluid dynamics simulation can give the major contribution both with planar simplified models as well as with complete 3D models.

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“…The authors maintain that a deeper understanding of the physical phenomena can only be achieved by means of numerical techniques. Different 2 Advances in Tribology contributions have already shown the goodness of the CFD approach for such purposes [15,16]. In the past the authors approached the problem using commercial software [17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

A New Integrated Approach for the Prediction of the Load Independent Power Losses of Gears: Development of a Mesh-Handling Algorithm to Reduce the CFD Simulation Time

Concli¹,

Torre

Gorla

et al. 2016

Advances in Tribology

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To improve the efficiency of geared transmissions, prediction models are required. Literature provides only simplified models that often do not take into account the influence of many parameters on the power losses. Recently some works based on CFD simulations have been presented. The drawback of this technique is the time demand needed for the computation. In this work a less time-consuming numerical calculation method based on some specific mesh-handling techniques was extensively applied. With this approach the windage phenomena were simulated and compared with experimental data in terms of power loss. The comparison shows the capability of the numerical approach to capture the phenomena that can be observed experimentally. The powerful capabilities of this approach in terms of both prediction accuracy and computational effort efficiency make it a potential tool for an advanced design of gearboxes as well as a powerful tool for further comprehension of the physics behind the gearbox lubrication.

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Investigations on CFD Simulations for Predicting Windage Power Losses in Spur Gears

Cited by 59 publications

References 13 publications

Preliminary numerical investigations on windage power losses generated by helical gears

Preliminary numerical investigations on windage power losses generated by helical gears

Numerical modeling of the churning power losses in planetary gearboxes: An innovative partitioning‐based meshing methodology for the application of a computational effort reduction strategy to complex gearbox configurations

A New Integrated Approach for the Prediction of the Load Independent Power Losses of Gears: Development of a Mesh-Handling Algorithm to Reduce the CFD Simulation Time

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