Two-Way Coupled CFD Approach for Predicting Gear Temperature of Oil
                    Jet Lubricated Transmissions

Deshpande, Shrikrishna; Joshi, Himanshu; Madhavan, Jaiganesh; Mason, Paul; Wink, Carlos Henrique

doi:10.4271/02-11-03-0013

Cited by 17 publications

(16 citation statements)

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“…For instance, low gears are not engaged during an entire racing lap. 23 Hence, oil jet flows on those can be minimised to improve the overall efficiency of the system.…”

Section: Resultsmentioning

confidence: 99%

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A system level computational model for thermo-tribological functioning of high-performance racing transmission with dry sump lubrication

Fatourehchi

Mohammadpour

2021

Proceedings of the Institution of Mechanical Engineers, Part J:

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Dry sump lubrication is a key feature in transmission systems of high-performance racing applications. While it provides adequate oil for gears contact, it reduces churning losses. Moreover, provision of continuous oil for gear contacts under harsh conditions during a race, makes dry sump lubrication systems more reliable. One of the most important aspects of any dry sump system is the assessment of its thermo-tribological performance and its capability to remove the generated heat from highly loaded high-shear gear contacts. In this paper, a multi-physics integrated numerical method of a dry sump transmission, considering a system approach is presented. The method provides a validated predictive tool to assess thermal functioning of dry sump lubrication systems.

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“…For instance, low gears are not engaged during an entire racing lap. 23 Hence, oil jet flows on those can be minimised to improve the overall efficiency of the system.…”

Section: Resultsmentioning

confidence: 99%

“…oil jet flow and gear speed and temperature) effects on the thermal performance of a jet lubricated transmission system. Deshpande et al 23 investigated different oil jet lubrication methods (i.e. impingement of oil jet into-mesh or out-of-mesh) with a CFD approach.…”

Section: Introductionmentioning

confidence: 99%

A system level computational model for thermo-tribological functioning of high-performance racing transmission with dry sump lubrication

Fatourehchi

Mohammadpour

2021

Proceedings of the Institution of Mechanical Engineers, Part J:

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“…Here, the numerical calculations were performed on Fluent. A heat source was applied to the meshing surface in the form of a body heat source (Deshpande et al , 2018). The coupled thermal boundary conditions were used at the fluid-solid interface to solve the heat convection and heat conduction equations between the fluid and solid.…”

Section: Heat Transfer Analysis Modelmentioning

confidence: 99%

CFD-based calculation method of convective heat transfer coefficient of spiral bevel gear in intermediate gearbox under splash lubrication

Wang

Liu³

et al. 2021

ILT

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Purpose This paper aims to propose a numerical method to calculate the convective heat transfer coefficient of spiral bevel gears under the condition of splash lubrication and to reveal the lubrication and temperature characteristics between the gears and the oil-air two-phase flow. Design/methodology/approach Based on computational fluid dynamics, the multiple reference frames (MRF) method was used to simulate the rotational characteristics of gears and the motions of their surrounding fluid. The lubrication and temperature characteristics of gears were studied by combining the MRF method with the volume of the fluid multiphase flow model. Findings The convective heat transfer coefficient can be improved by increasing the rotational speed and the oil immersion depth. Moreover, the temperature of the tooth surface having a large convective heat transfer coefficient is also found to be low. A large convection heat transfer coefficient could lead to a good cooling effect. Originality/value This method can be used to obtain the convective heat transfer coefficient values at different meshing positions, different radii and different tooth surface positions. It also can provide research methods for improving the cooling effect of gears under the condition of splash lubrication. Peer review The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-07-2020-0233/

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“…Based on the LTCA and EHL analysis of bevel gears, a thermal analysis was performed to explore the influence of friction heat on the temperature rise (Zhang et al, 2017). To develop an oil-jet lubrication system to effectively cool the gear system, the finite element approach was adopted to perform the thermal analysis of high-speed gears with different lubrication modes and methods (Chen & Liu, 2013, sept;Deshpande et al, 2018). To obtain more accurate thermal-analysis results, a numerical method was proposed by combining the hybrid EHL model with the finite element method (Gan et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis on heat-flow-coupled temperature field for orthogonal face gears with oil–jet lubrication

Ouyang

Dai

et al. 2021

Engineering Applications of Computational Fluid Mechanics

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Lubrication and cooling performances of face gears with oil-jet lubrication are closely related to the nozzle layouts. To investigate the influence of the nozzle layouts on the lubrication performance of the face gears, a numerical analysis method based on heat-flow coupling is adopted in this study for predicting the transient temperature characteristics. First, a mathematical model of impingement depth integrating the nozzle spatial layouts, injection parameters, and geometric parameters of the given face gear is presented for determining the nozzle. Then, after accessing the friction heat, the heat-flow-coupled finite element model is built to resemble the oil-jet lubrication process and obtain the temperature field on the tooth surface. Finally, under the same nozzle layouts, the temperature distributions are compared with the oil pressure and oil volume fraction reported in previous studies. The results reveal that the nozzle layouts significantly affect lubrication performance. Specifically, the lubrication performance of the lateral layout parameter near the middle point of the tooth width is better, and there is a certain range for the longitudinal layout parameter and jet elevation angle. This study can provide a reference for further optimizing the nozzle layouts and prolonging the service life of the orthogonal face gear.

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Two-Way Coupled CFD Approach for Predicting Gear Temperature of Oil Jet Lubricated Transmissions

Cited by 17 publications

References 0 publications

A system level computational model for thermo-tribological functioning of high-performance racing transmission with dry sump lubrication

A system level computational model for thermo-tribological functioning of high-performance racing transmission with dry sump lubrication

CFD-based calculation method of convective heat transfer coefficient of spiral bevel gear in intermediate gearbox under splash lubrication

Numerical analysis on heat-flow-coupled temperature field for orthogonal face gears with oil–jet lubrication

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