Comparison of flooded and directed lubrication tilting pad thrust bearings

New, N. H.

doi:10.1016/0301-679x(79)90140-3

Cited by 10 publications

(6 citation statements)

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“…In the present investigation, the directed lubrication has been assumed with scrapers mounted at the trailing edge of each pad. This idea has been taken from studies . The purpose of directed lubrication is to directly supply oil (at ambient temperature or supply temperature) into the clearance (between pad and runner), and the need of scraper is to block the hot oil carryover from the upstream pad to the downstream pad for eliminating the oil‐mixing phenomenon.…”

Section: Mathematical Modellingmentioning

confidence: 99%

Frictional and load-carrying behaviours of micro-textured sector shape pad thrust bearing incorporating the cavitation and thermal effects

Aggarwal

Pandey

2016

Lubr. Sci.

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Frictional and load-carrying behaviours of micro-textured sector shape pad thrust bearing have been explored and reported herein. The textured pad surfaces have been generated employing different crosssectional shapes (circular, square, trapezoidal and triangular) of grooves. Based on the thermohydrodynamic lubrication analysis, it is observed that when the adopted texture pattern is placed on the pad towards the entry region, it produces substantial reduction in friction coefficient. The texture involving the square cross-sectional shape of grooves has yielded substantial reductions in the friction coefficient in comparison with the conventional plain pad.

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Section: Mathematical Modellingmentioning

confidence: 99%

Frictional and load-carrying behaviours of micro-textured sector shape pad thrust bearing incorporating the cavitation and thermal effects

Aggarwal

Pandey

2016

Lubr. Sci.

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“…The coupled solution of governing equations is achieved by discretizing equation (11) in the algebraic form by using the finite element method. In this method, the weight function N is multiplied to equation ( 11), followed by its integration over the element yields…”

Section: Film Thickness Expressionsmentioning

confidence: 99%

“…Hydrodynamic thrust pad bearings possess features of high loadcarrying capacity, relatively low coefficient of friction, and inherent high damping capacity; however, these types of bearings are being researched globally for further reducing the power losses and increasing the load-carrying capacity per unit area of pad surface. It is found that the researchers have mainly employed surface modifications [1][2][3][4][5][6][7][8][9][10] (surface profiling, surface roughness) and amended lubricating properties and quantity of oils (using additives, micro and nanomaterials, minimum quantity lubrication, [11][12][13][14] low viscous oils, [15][16][17] etc.) for making the bearings energy efficient without compromising the load-carrying capacity.…”

Section: Introductionmentioning

confidence: 99%

Performance analysis of thrust pad bearing using micro-rectangular pocket and bionic texture

Atwal

Pandey

2020

Proceedings of the Institution of Mechanical Engineers, Part J:

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This paper presents the performance behaviors of a hydrodynamic thrust bearing incorporating new pad surface designs involving microrectangular pocket and Labeo rohita fish scale texture. The bearing performance parameters have been numerically explored and analyzed using three different pad surface designs. The effects of texture parameters such as pocket/texture depth, extend of pocket, and fish texture spread in the circumferential and radial directions, the number of scale texture waves in circumferential and radial directions, have been investigated for improving the performance of the bearing. It has been found that the pad surface having microrectangular pocket and fish scale texture together yields substantial increase in minimum film thickness and reduction in friction coefficient as compared to the other pad designs.

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“…As it was mentioned by Martin [3], Bielec and Leopard [4], Mikula and Gregory [14], and New [15], one of the potential bene�ts of using directed lubrication is the decrease of power loses caused by churning of oil in the bath. Directed lubrication is realized by removing all the oil from the bearing housing, while the amount of cold oil required for hydrodynamic lubrication is supplied directly to the inlet zone of the bearing pads.…”

Section: Decreasing Of Churning Power Lossmentioning

confidence: 99%

On the Possibilities of Decreasing Power Loss in Large Tilting Pad Thrust Bearings

Wasilczuk

Rotta

2013

ISRN Tribology

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Different systems of direct oil supply have been developed in order to facilitate efficient introduction of fresh lubricant to the oil gap and reduction of churning power loss in tilting pad thrust bearings. Up to now there is no documented application of the supply groove in large thrust bearings used in water power plants. The results of modeling lubricant flow in the lubricating groove of a thrust bearing pad will be presented in the paper. CFD software was used to carry out fluid film calculations. Such analysis makes it possible to modify groove geometry and other parameters and to study their influence on bearing performance. According to the results a remarkable decrease in total power loss due to avoiding churning losses can be observed in the bearing.

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Comparison of flooded and directed lubrication tilting pad thrust bearings

Cited by 10 publications

References 1 publication

Frictional and load-carrying behaviours of micro-textured sector shape pad thrust bearing incorporating the cavitation and thermal effects

Frictional and load-carrying behaviours of micro-textured sector shape pad thrust bearing incorporating the cavitation and thermal effects

Performance analysis of thrust pad bearing using micro-rectangular pocket and bionic texture

On the Possibilities of Decreasing Power Loss in Large Tilting Pad Thrust Bearings

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