Influence of Total Inertia Effects in a Thrust Curvilinear Bearing Lubricated with Newtonian Lubricants

Walicka, A.; Jurczak, P.

doi:10.1515/ijame-2017-0067

Cited by 8 publications

(4 citation statements)

References 8 publications

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“…Several studies reported that the inertia significantly affects bearing performance both theoretically [1][2][3][4][5][6][7] and numerically [8][9][10]. Based on analytical approach, Safar and Shawki [1] investigated the effect of inertia force on the turbulent bearing characteristics.…”

Section: Introductionmentioning

confidence: 99%

“…They analysed the validity of the Reynolds equation (RE) and inertia effects in parallel textured sliders of infinite width using the RE and commercial CFD simulation software (FLUENT). In the case of journal bearing, the longitudinal inertia has a dominant influence on the increase in the values of the bearing mechanical parameters, while the circumferential inertia causes a small decrease in the pressure and load-carrying capacity [5]. In a recent study, Okabe [6] revealed that the fluid inertia generates more hydrodynamic load although it does not significantly alter bearing stiffness or damping.…”

Section: Introductionmentioning

confidence: 99%

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Effect of inertia on the cavitation phenomena of hydrodynamic textured bearings considering slip

Jamari

Muchammad

Hilmy

et al. 2019

J Braz. Soc. Mech. Sci. Eng.

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Surface modification of a lubricated bearing, such as hydrophobic coating inducing slip situation and texturing, is proved to enhance hydrodynamic performance. As widely known, in textured surface lubricant inertia and cavitation can significantly affect the hydrodynamic pressure profile. However, a brief literature review indicates that studies related to the correlation between cavitation and inertia, especially in the presence of slip, are considerably limited. The present study examines the effect of inertia on cavitation phenomena by considering the slip boundary using two approaches, namely computational fluid dynamics based on full Navier-Stokes equations and analytical lubrication equation based on the Reynolds equation. The modified Reynolds equation with slip concept is used with respect to the slip effect applied on the surface of the bearing. The results indicate that the inertia as well as the slip condition significantly affects the cavitation area. It is also highlighted that the cavitation area reduces by increasing the inertia effect, and it becomes smaller when the slip is introduced.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of inertia on the cavitation phenomena of hydrodynamic textured bearings considering slip

Jamari

Muchammad

Hilmy

et al. 2019

J Braz. Soc. Mech. Sci. Eng.

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“…They evaluated the performance of bearings in the form of load capacity, flow rate, power factor, frictional torque and stiffness factor for the various values of roughness parameters. Walicka and Jurczak 13 studied the spherical hydrostatic thrust bearing taking into account the overall inertia effects and Newtonian model for lubricant behaviour. They presented the results in terms of non-dimensional pressure distribution and load capacity.…”

Section: Introductionmentioning

confidence: 99%

Performance of textured spherical thrust hybrid bearing operating with shear thinning and piezoviscous lubricants

Agrawal

Sharma

2021

Proceedings of the Institution of Mechanical Engineers, Part J:

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Improving the lubricating performance of tribo-pairs using engineering textured surfaces has been the main focus of tribology research in recent years. The use of a suitably designed micro-texture on the bearing surface may have a beneficial effect on the performance of fluid film bearings. In the present paper, a mathematical model of a hybrid spherical thrust bearing is developed considering the effect of shear thinning and piezoviscous behaviour of a lubricant. The modified Reynolds equation for a hybrid spherical thrust bearing configuration together with a restrictor flow equation for a capillary restrictor is solved using a finite-element method. In this work, the effect of various micro-textures shapes (spherical, circular, conical and square) and non-Newtonian lubricant behaviour having shear thinning and piezoviscous effects are analysed. The numerically simulated result shows a strong dependence on the combined effect of shear thinning and piezoviscous lubricant behaviour and a chosen geometric shape of a texture. The frictional power loss is seen to reduce nearly by 24.05%, and the stiffness gets enhanced by 11.08%.

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“…In the first approximation, the distribution of forces of the "blade-stator" pair of the rotary pump can be identified with the work of bearing. Walicka et al [16] considered the influence of the effects of complete inertia in the support bearing. Walicka et al [17,18] analysed the multi-lobed tapered bearing and determined its parameters based on Galerkin's method with an analysis of the power characteristics of the bearing.…”

Section: Introductionmentioning

confidence: 99%

Modelling of Work of the Rotor-Type Blade Pump with Revolving Stator

Dmytriv

Lanets

Dmytriv

et al. 2021

International Journal of Applied Mechanics and Engineering

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In the article, the analytical dependences of modelling the cell cross-sectional area between two adjacent blades of a rotary blade pump and capacity for a pump with fixed and rotating stators are given, and analytical dependences are derived to model the power necessary to overcome the friction forces of the blades. The forces acting on the radially placed blade of a rotary pump with a fixed stator (non-rotating or stationary) and a rotating stator are analyzed. Design and technological parameters that influence the pump capacity and power are taken into account. The power required for the movement of the pump blade without taking into account the compression of the air has the opposite character of the change as to the pump capacity The capacity of a rotary pump with a rotating stator is three times higher than that of a stationary stator. The rotary pump with a rotating stator, with six radially spaced blades, consumes 0.854 [kW] less power to overcome the blade friction of 1 313 [kW]. The results of modelling of the pump work are given.

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Influence of Total Inertia Effects in a Thrust Curvilinear Bearing Lubricated with Newtonian Lubricants

Cited by 8 publications

References 8 publications

Effect of inertia on the cavitation phenomena of hydrodynamic textured bearings considering slip

Effect of inertia on the cavitation phenomena of hydrodynamic textured bearings considering slip

Performance of textured spherical thrust hybrid bearing operating with shear thinning and piezoviscous lubricants

Modelling of Work of the Rotor-Type Blade Pump with Revolving Stator

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