Effect of Surface Topography and Structural Parameters on the Lubrication Performance of a Water-Lubricated Bearing: Theoretical and Experimental Study

Xie, Zhongliang; Rao, Zhushi; Huanling, L

doi:10.3390/coatings9010023

Cited by 22 publications

(6 citation statements)

References 40 publications

(46 reference statements)

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“…The paper "Effect of Surface Topography and Structural Parameters on the Lubrication Performance of a Water-Lubricated Bearing: Theoretical and Experimental Study" by Xie et al described theoretical calculations and experiments examining the influence of the surface topography on water-lubricated bearings' lubrication performance [2]. The test data and simulation corresponded well, showing the influences of bushing, eccentricity ratio, bushing deformation, specific pressure, speed, velocity, etc.…”

Section: Superhydrophobic Coatings For Corrosion and Tribologymentioning

confidence: 93%

Special Issue on Superhydrophobic Coatings for Corrosion and Tribology

Wang

Zhao

2019

Coatings

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Section: Superhydrophobic Coatings For Corrosion and Tribologymentioning

confidence: 93%

Special Issue on Superhydrophobic Coatings for Corrosion and Tribology

Wang

Zhao

2019

Coatings

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“…Tilting pad bearings have been widely applied in many kinds of rotating machines, such as gas turbines [1], compressors [2], and so on, due to their ability to improve stability [3]. Tilting pad bearings are also suitable for oil-free operations [4][5][6], so they have the potential for new fields such as electrical submersible pumps [7,8].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Coefficients of Tilting Pad Bearing by Perturbing the Turbulence Model

Han

Chen

et al. 2022

Applied Sciences

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Tilting pad bearings are appropriate for the trend of high efficiency and reliability design of rotating machinery due to their high stability. The laminar and turbulent flow states exist in the lubricating oil film of high-speed and heavy-load tilting pad bearings simultaneously. By perturbing the multiple flow state lubrication model with a partial derivative method, together with the pad-pivot structural perturbations, the frequency-dependent stiffness and damping coefficients of tilting pad bearings, embracing the effect of dynamical variations of both turbulence and pressure-viscous, were numerically solved in this research. The importance of each perturbed variable was studied, and the results indicate that the perturbed film thickness included in turbulence coefficients perturbations is significant enough to be taken into account otherwise the equivalent stiffness coefficients will be obviously overestimated. Unlike the perturbed film thickness, the consideration of the perturbed viscosity is optional, because it makes the stiffness and damping coefficients larger at both laminar and turbulent flow states. For a simplified simulation and conservative prediction results, the perturbed viscosity can be neglected.

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“…Xie et al [27] studied the performance of water lubrication and dynamic characteristics in bearings with misalignment using CFD. In addition, the different lubrication regimes were evaluated, such as limit, mixed, and hydrodynamic lubrication [28][29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

A Numerical Model for the Analysis of the Bearings of a Diesel Engine Subjected to Conditions of Wear and Misalignment

2021

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In the present work, a numerical model is developed to investigate the influence of wear and misalignment on the bearings of a stationary diesel engine. The model implemented considers the effects of surface wear on the bearing, cavitation effects, and surface roughness. For the numerical analysis, changes in the surface roughness of , , and are defined, and changes in the bearing load of 50%, 75%, and 100%. The results demonstrated that increasing the surface roughness intensifies the bearing wear, which represents 18% and 140% of the bearing clearance for the roughness of and , respectively. Additionally, the surface roughness causes a considerable increase in the bearing wear rate. The results described a maximum wear rate of . In general, increasing the bearing load by 25% doubles the hydrodynamic pressure conditions increases friction force by 33%, and reduces lubrication film thickness by 12%. The analysis of the angle of deflection, and , shows that the moment and the degree of misalignment tend to increase significantly with the increase in the magnitude of the angle . Negative angles of deflection, , produce a greater increase in the degree of misalignment and the moment. This implies a greater chance of contact with the bearing surface. In conclusion, the proposed methodology serves as a reliable tool to simultaneously evaluate key parameters on the tribological behavior of bearings that further extend their endurance and minimize wear damage.

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Effect of Surface Topography and Structural Parameters on the Lubrication Performance of a Water-Lubricated Bearing: Theoretical and Experimental Study

Cited by 22 publications

References 40 publications

Special Issue on Superhydrophobic Coatings for Corrosion and Tribology

Special Issue on Superhydrophobic Coatings for Corrosion and Tribology

Dynamic Coefficients of Tilting Pad Bearing by Perturbing the Turbulence Model

A Numerical Model for the Analysis of the Bearings of a Diesel Engine Subjected to Conditions of Wear and Misalignment

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