Flow Mechanisms and Lubrication Performance of Water-Lubricated Thrust Bearings with Herringbone Grooves

Ran, Haifeng; Dai, Peng; Yan, Shuping; Wang, Fengtao; Yao, Xingjia; Wang, Jianping; Zuo, Guizhong

doi:10.3390/lubricants10080182

Cited by 8 publications

(3 citation statements)

References 26 publications

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“…A 30.77% surge in LCC resulted in a speed of 70,000 rpm due to the bearing optimization. Ran et al [26] modeled the herringbone grooved thrust bearing (HGTB) using CFD, considering the viscous temperature changes, cavitation, and turbulences. Yao et al [27] studied externally pressurized herringbone grooves to analyze the self-pressurization action of herringbone grooves and external pressurization through orifices.…”

Section: Introductionmentioning

confidence: 99%

Design of herringbone grooved thrust bearing for locomotive turbocharger rotor

Mishra,

Behera

2024

Eng. Res. Express

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The herringbone texture exhibited excellent tribological performance to minimize friction and wear. However, the application of this texture in the development of grooved thrust bearings is limited. Therefore, in this study, an attempt was made to design an oil-lubricated herringbone grooved thrust bearing for high-speed locomotive turbochargers. The designed bearing accommodates the axial load generated due to the pressure difference between the turbine and compressor wheel. The bearing design starts with applying Newton's second law to predict the thrust load acting on the locomotive turbocharger rotor. The thrust load is calculated analytically and is found to be 4.54 kN for a design rotor speed of 1,00,000 rpm. Further, the herringbone grooved thrust bearing has been modeled numerically using non-linear Reynold's equation. The modified Reynolds equation is discretized using the finite volume method (FVM) and solved by successive over-relaxation (SOR) methodology to determine the static characteristics over the bearing surface. The developed HGTB is found to have a suitable load-carrying capacity of 4.6 kN, frictional torque of 0.25 N.m, and power loss of 2.98 kW. Further, a parametric analysis has been carried out to study the influence of design parameters such as the number of grooves, helix angle, angular groove width, groove depth, and speed on load-carrying capacity, frictional torque, and power loss.

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Section: Introductionmentioning

confidence: 99%

Design of herringbone grooved thrust bearing for locomotive turbocharger rotor

Mishra,

Behera

2024

Eng. Res. Express

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“…Taking the hydrostatic thrust bearing as the research object, Liu YM and Johnson RE discussed the influence of different radial groove lengths, widths, and depths on its bearing capacity [14,15]. Ran HF used the Roelands equation to consider the changes in viscosity, temperature, turbulence, and cavitation and researched the cavitation area of hydrostatic thrust bearing with spiral angle, slot width ratio, rotational speed, and other parameters [16]. Shang YY studied the influence of surface texture shape and height on the bearing performance of hydrostatic thrust bearing and established the change rule of bearing performance under the change of oil supply pressure according to the viscosity-temperature characteristics of lubricating oil [17,18].…”

Section: Introductionmentioning

confidence: 99%

Research on the dynamic pressure effect of clearance oil film of stepped hydrostatic thrust bearing

Feng

Jiang

et al. 2023

Preprint

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The dynamic pressure effect of the clearance oil film of stepped hydrostatic thrust bearing is studied by taking the double rectangular cavity oil cushion as an example. According to the hydrodynamics theory, the average dynamic pressure of lubricating oil film in different clearance height regions is theoretically deduced and calculated, and the dynamic pressure effect of the clearance oil film in the stepped hydrostatic thrust bearing is studied through the combination of theoretical calculation, simulation, and experimental verification. It is found that the theoretical value of the average dynamic pressure of the clearance oil film and the rotational speed show a linear growth relationship with a slope of 275.2. The simulated value of the average dynamic pressure and the rotational speed follow the growth law of the Fourier 1 model. The experimental value of the average dynamic pressure is between the theoretical value and the simulated value, which is basically not affected by the load. In the speed range of 0r/min-200r/min, compared with the viscosity of lubricating oil, the speed is the main factor affecting the dynamic pressure of the oil film of the stepped hydrostatic thrust bearing. The dynamic pressure value of the clearance oil film increases in a stepped fashion along the radial direction of the double rectangular cavity oil cushion. The dynamic pressure value has an obvious upward trend at the junction of the circumferential right oil cavity and the sealing edge and then decreases to 0 after reaching the peak value.

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“…Two of them, [28,29], are devoted to the improvement of the computational methodology focused on the lubricated mechanical components including the rolling bearings and on the optimum meshing strategies. The other references are devoted to the journal bearings [30][31][32][33][34] and the fluid film thrust bearings [35][36][37][38]. Though these bearings are out of the scope of the previous detailed description of literary sources, they share a similar methodology when modelling the lubrication and cooling processes.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of Oil Lubrication and Cooling of Roller Thrust Bearing in High-Performance Mixed-Flow Pump

Sedlář,

Abrahámek

2023

Energies

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This article deals with the numerical simulation of an oil–air multiphase flow inside the thrust bearing of a high-performance mixed-flow pump, including both the lubrication effects and the cooling of the oil by the water-cooling system based on spiral piping. The bearing is lubricated by the oil bath method with partially submersed rollers. Very complex full 3D geometry is modelled in all details, but for modelling purposes, the impacts of some model simplifications on the results are tested. The comprehensive CFD analysis is based on fully transient simulations, taking into account the different rotational speeds and different coordinate systems of all rotating components. The oil distribution on the bearing ring and roller walls as well as the oil temperature are discussed in detail. The results demonstrate that the designed cooling system is efficient in keeping the bearing and oil temperatures at safe values to guarantee bearing rating life even at extreme climatic conditions. The simulations present a comprehensive way of solving complex problems of the bearing and its cooling system applicable to engineering practice. The results of the simulations indicate also that the complexity of the computational domain and bearing clearances have a significant impact on the obtained results.

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Flow Mechanisms and Lubrication Performance of Water-Lubricated Thrust Bearings with Herringbone Grooves

Cited by 8 publications

References 26 publications

Design of herringbone grooved thrust bearing for locomotive turbocharger rotor

Design of herringbone grooved thrust bearing for locomotive turbocharger rotor

Research on the dynamic pressure effect of clearance oil film of stepped hydrostatic thrust bearing

Numerical Analysis of Oil Lubrication and Cooling of Roller Thrust Bearing in High-Performance Mixed-Flow Pump

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