A simulation analysis for lubricating characteristics of an oil-jet lubricated ball bearing

Liu, Jing; Ni, Hengtai; Xu, Zidan; Pan, Guang

doi:10.1016/j.simpat.2021.102371

Cited by 24 publications

(7 citation statements)

References 26 publications

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“…Computational fluid dynamics (CFD) is capable of providing a more in-depth understanding of the oil/air flow and the associated power losses [19,20], and could describe the fluid-dynamical phenomenon easily and accurately [21][22][23][24]. There are limited numerical studies on oil jet behavior owing to the multiphase flow, complex gear structure, and tiny oil flow.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis for Wetting Behaviors of an Oil Jet Lubricated Spur Gear

et al. 2022

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As it is widely employed in the aeronautical transmission system, a better understanding of the oil jet lubrication behavior is vital to determine the total system energy consumption. Firstly, this study presents related theoretical models such as the sum of oil jet resistance torque, impingement depth, and wetted area of the oil film for calibrating the physical characteristics of the impact of the oil jet on the gear flank. Then, in terms of the flow phenomenology of the liquid column for the oil jet impact on an isolated spur gear, a detailed transient and spatial flow field analysis becomes available, benefiting from an overset mesh method integrating with a volume-of-fluid (VOF) method. Furthermore, not only the oil jet resistance torque, but also the impingement depth as well as the spatial and temporal evolution of wetted surface by the oil film on the gear tooth given by numerical investigations were compared well with the theoretical calculations.

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Section: Introductionmentioning

confidence: 99%

Numerical Analysis for Wetting Behaviors of an Oil Jet Lubricated Spur Gear

et al. 2022

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“…The experimental platform [39] is shown in Figure 12a According to the formulas of fault frequency in ref. [38] and the parameters in Table 3, the fault frequencies of NASA bearing are shown in Table 4. The important frequencies mainly include the ball pass frequency of the inner race (BPFI), the ball pass frequency of the outer race (BPFO), the ball spin frequency (BSF) and rotating frequency (Fs).…”

Section: Methods Verification and Applicationmentioning

confidence: 99%

“…According to the parameters and the formulas in refs. [37,38], the fault frequencies can be obtained as shown in Table 2. The experimental environment is Intel (R) Core (TM) i5-5200u CPU @ 2.20 GHz.…”

Section: Experimental Verification Based On Cwru Bearing Datamentioning

confidence: 99%

Friction, Vibration and Dynamic Properties of Transmission System under Wear Progression

2023

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“…The results of the experiment revealed that the elbow angle of the nozzle is related to the grease flow rate and a high flow rate reduces the sliding impact. Following that, Liu et al [ 171 ] created a fluid–solid coupled simulation model to explore the impacts of oil flow rate, lubricant viscosity, nozzle angle, and number of nozzles on gearbox bearing lubrication characteristics. The results of using the CFD method to simulate the air–oil two-phase flow in the bearing revealed that the oil flow rate has little effect on the minimum oil volume fraction of the bearing, that increasing the nozzle angle and lubricant viscosity decreases the lubricant passage rate, and that the lubrication effect is better in the case of double nozzles.…”

Section: Research On Bearings Lubrication Technology Of Wind Turbinementioning

confidence: 99%

Review of Tribological Failure Analysis and Lubrication Technology Research of Wind Power Bearings

et al. 2022

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Wind power, being a recyclable and renewable resource, makes for a sizable portion of the new energy generation sector. Nonetheless, the wind energy industry is experiencing early failure of important components of wind turbines, with the majority of these issues also involving wind power bearings. Bearing dependability is directly tied to the transmission efficiency and work performance of wind turbines as one of its major components. The majority of wind turbine failures are due to bearings, and the vast majority of bearing failures are due to lubrication. The topic of improving the accuracy and life of wind power bearing motion is becoming increasingly essential as the wind power industry develops rapidly. This study examines the various constructions and types of wind turbines, as well as their bearings. We also examined the most typical causes of friction and lubrication failure. Furthermore, contemporary research on wind turbine bearings has been compiled, which mostly comprises the study and development of lubrication technology and other areas. Finally, a conclusion and outlook on current challenges, as well as future research directions, are offered.

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A simulation analysis for lubricating characteristics of an oil-jet lubricated ball bearing

Cited by 24 publications

References 26 publications

Numerical Analysis for Wetting Behaviors of an Oil Jet Lubricated Spur Gear

Numerical Analysis for Wetting Behaviors of an Oil Jet Lubricated Spur Gear

Friction, Vibration and Dynamic Properties of Transmission System under Wear Progression

Review of Tribological Failure Analysis and Lubrication Technology Research of Wind Power Bearings

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