Journal ArticleDOI
A simplified analytical method for the pressure of tilt hydrostatic journal bearing
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TLDR
In this article, the authors presented a simplified method to predict the pressure of the recess, no matter whether the tilt center coincides with the geometric center of the hydrostatic journal bearings.Abstract:
This paper aims to present a simplified method to predict the pressure of the recess, no matter whether the tilt center coincides with the geometric center of the hydrostatic journal bearings.,To validate the effectiveness of the presented model, computational fluid dynamics (CFD) method and experimental method are performed in this study.,By comparing the CFD results and the experimental results, the pressure of the recess is related to the tilt direction, the tilt center, the width of the land and the circumferential angle of the land.,The mathematic model requires equivalent resistance of land edge – tilt position, tilt direction, tilt angle and the thickness of oil film instead of any digital iteration. Furthermore, a novel experimental apparatus including a circular hydrostatic bearing called ball bearing is designed to study the tilt effect produced by manufacturing error and offset load force on the pressure of the recess.read more
Citations
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Journal ArticleDOI
Principal normal stress cavitation criterion for CFD analysis of loading capacity in journal bearings
TL;DR: In this article, a principal normal stress cavitation criterion based on the stress applied to flowing lubricant in journal bearings is developed and used to investigate the influence of shear cavitation on loading capacity of journal bearings.
Journal ArticleDOI
A Novel Geometry Optimization Approach for Multi-Recess Hydrostatic Bearing Pad Operating in Static and low-Speed Conditions Using CFD Simulation
TL;DR: In this paper , a two-parameter method for estimating optimal bearing pad proportions was proposed and investigated using Computational Fluid Dynamics (CFD) using 3D static CFD quarter model of a multi-recess bearing pad.
Posted ContentDOI
A novel geometry optimization approach for multi-recess hydrostatic bearing pad operating in static and low-speed conditions using CFD simulation
TL;DR: In this article , a two-parameter method for estimating optimal bearing pad proportions was proposed to reduce the energy consumption of the bearing pad in low-speed conditions to achieve minimum energetic loss.
Posted ContentDOI
Research on static characteristics of oil pad tiltable hydrostatic thrust bearing under eccentric load
TL;DR: In this article , the effect of rotation speed, offset distance and load on the oil-cushion tilting double rectangular cavity hydrostatic thrust bearing was analyzed under eccentric load conditions.
References
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Journal ArticleDOI
Calculation of dynamic coefficients in a hydrodynamic bearing considering five degrees of freedom for a general rotor-bearing system
Gunhee Jang,Y. J. Kim +1 more
TL;DR: In this article, the stiffness and damping coefficients in a hydrodynamic bearing considering five degrees of freedom for a general rotor-bearing system were calculated by using the finite element method.
Journal ArticleDOI
Performance of hydrostatic tilted thrust pad bearings of various recess shapes operating with non-Newtonian lubricant
Saurabh Yadav,Satish C. Sharma +1 more
TL;DR: In this article, the influence of the tilt and recess shape on the static and dynamic performance characteristics of the hydrostatic thrust pad bearing system having Rabinowitsch fluid model lubricant was numerically analyzed.
Journal ArticleDOI
Equivalent Stiffness and Damping Investigation of a Hydrostatic Journal Bearing
Ahmed Bouzidane,Marc Thomas +1 more
TL;DR: In this article, the effects of the film thickness, the recess pressure, and the geometric configuration on the equivalent stiffness and damping of a hydrostatic journal bearing were investigated using a numerical method.
Proceedings ArticleDOI
The Role of Pivot Stiffness on the Dynamic Force Coefficients of Tilting Pad Journal Bearings
Luis San Andrés,Yujiao Tao +1 more
TL;DR: In this article, a conventional thermo hydrodynamic bulk flow model for predicting the pressure and temperature fields in tilting pad journal bearings is detailed, and the model accounts for various pivot stiffness types, all load dependent and best when known empirically, and allows for dissimilar pad and bearing clearances.
Journal ArticleDOI
An isoviscous, isothermal model investigating the influence of hydrostatic recesses on a spring-supported tilting pad thrust bearing☆
TL;DR: In this article, a numerical study of a sector-shaped bearing is performed to understand how recess size and shape can affect the performance of a typical bearing, and an isoviscous, isothermal model is used in this instance because the operating conditions of the turbine in question were shown not to be severe enough to warrant the computational expense of a fully coupled thermoelastic hydrodynamic model.
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Performance of hydrostatic tilted thrust pad bearings of various recess shapes operating with non-Newtonian lubricant
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