A CFD investigation of lubricant flow in deep groove ball bearings

Peterson, Wyatt; Russell, Thomas; Sadeghi, Farshid; Berhan, Michael Tekletsion; Stacke, Lars-Erik; Ståhl, Jonas

doi:10.1016/j.triboint.2020.106735

Cited by 44 publications

(18 citation statements)

References 16 publications

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“…The fitting method is consistent with the Ref. 13 The drag force result of Figure 10 is obtained. Note that the result of drag force is the total drag force within the model, not a single drag force.…”

Section: Analysis Of Drag Force In Rolling-slider Bearingsupporting

confidence: 71%

Numerical research of lubricant flow behaviors in rolling-slider bearing under the microscopic scale

Zhang

Lü

Huang

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part J:

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In order to reveal the fluid flow behaviors of rolling-slider bearing under the microscopic scale, a full-basin fluid-solid coupling model with different slider shapes is established by CFD and multiple mesh technology. The flow trajectory of fluid is monitored by a slip mesh model, and the dynamics performance is also compared. A reasonable model of rolling-slider bearing is derived. Moreover, this paper analyzes the influence of bearing speed, fluid viscosity, and fluid velocity on fluid behavior. The results show that there is a recirculation flow of fluid and vortex shedding in rolling-slider bearing during the process of lubrication. The distribution of maximum pressure on rolling body is in the orientation of bearing rotation. The fluid flow rate near inner ring is greater than that at outer ring. The established model is suitable for simulating the lubricant flow behaviors of rolling-slider bearings under different working conditions. It also provides a new method for designing the parameters of rolling-slider bearings and the function of working conditions.

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Section: Analysis Of Drag Force In Rolling-slider Bearingsupporting

confidence: 71%

Numerical research of lubricant flow behaviors in rolling-slider bearing under the microscopic scale

Zhang

Lü

Huang

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part J:

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“…They include those described in [16,[72][73][74][75][76][77][78][79][80][81][82][83][84][85]. Some researchers have employed alternative methods of formulation and solution, including finite elements, the complementarity approach or computational fluid dynamics (CFD) [86][87][88][89], including an early contribution by Ramsey and his co-workers [90].…”

Section: Numerical Predictions Of Contact Mechanics and Elastohydrody...mentioning

confidence: 99%

Fundamentals and Advances in Elastohydrodynamics: The Role of Ramsey Gohar

Johns-Rahnejat

Karami

Aini³

et al. 2021

Lubricants

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This paper commemorates Ramsey Gohar by acknowledging his contributions to the fields of contact mechanics and elastohydrodynamic lubrication (EHL) within the context of the developments of these subjects. A historical discourse is provided on elastohydrodynamics, from its inception in the 1940s to present. We demonstrate that Ramsey Gohar was not only a pioneer in the discoveries and fundamentals of the subject, but also led or contributed significantly to continual advances in the understanding of EHL and its diverse applications.

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“…In recent years, CFD (Computational Fluid Dynamics) has also been popular for solving EHL problems, because in CFD users do not need to write their own codes to simulate pressure and film thickness [24][25][26][27][28][29]. However, it uses a Finite Volume Method (FVM) to directly solve the Navier-Stokes equations for complex geometry by applying boundary conditions (BC).…”

Section: Introductionmentioning

confidence: 99%

CFD Investigation of Reynolds Flow around a Solid Obstacle

et al. 2022

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The Reynolds equation defines the lubrication flow between the smooth contacting parts. However, it is questionable that the equation can accurately anticipate pressure behavior involving undeformed solid asperity interactions that can occur under severe operating conditions. Perhaps, the mathematical model is inaccurate and incomplete, or some HL (hydrodynamic lubrication) and EHL (elastohydrodynamic lubrication) assumptions are invalid in the mixed lubrication region. In addition, the asperity contact boundary conditions may not have been properly defined to address the issue. Such a situation motivated the recent study of a 3D CFD investigation of Reynolds flow around the solid obstacle modelled in between the converging wedge. The produced results have been compared to analytical and numerical results obtained by employing the Reynolds equation. The validated CFD simulation is compared with the identical wedge, with cylindrical asperity at the center. A significant increase in pressure has been predicted because of asperity contact. The current study shows that the mathematical formulation of the ML problem has shortcomings. This necessitates the development of a new model that can also include fluid flow around asperity contacts for the accurate prediction of generated pressure. Consequently, sustainable tribological solutions for extreme loading conditions can be devised to improve efficiency and component performance.

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A CFD investigation of lubricant flow in deep groove ball bearings

Cited by 44 publications

References 16 publications

Numerical research of lubricant flow behaviors in rolling-slider bearing under the microscopic scale

Numerical research of lubricant flow behaviors in rolling-slider bearing under the microscopic scale

Fundamentals and Advances in Elastohydrodynamics: The Role of Ramsey Gohar

CFD Investigation of Reynolds Flow around a Solid Obstacle

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