Numerical modelling of the flow in the annular multi-recess hydrostatic thrust bearing using CFD methods

Kozdera, Michal; Drbáková, S.

doi:10.1051/epjconf/20134501051

Cited by 9 publications

(5 citation statements)

References 13 publications

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“…The only drawback of this geometry might be worsened ability to assess the behavior of each of the recesses separately. Nonetheless, discharge grooves can be added to solve this issue [26].…”

Section: Optimal Shape Determinationmentioning

confidence: 99%

“…One of the key advantages of this method is that it allows one to obtain many parameters and investigate flow characteristics in areas where it is extremely difficult or even impossible to implement sensors or use optical methods. CFD has already been used to study hydrodynamic, HS, and hybrid bearings [26][27][28]. Sharma et al [29] conducted a numerical study to determine the performance of unconventional hybrid bearings.…”

Section: Introductionmentioning

confidence: 99%

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A Novel Geometry Optimization Approach for Multi-Recess Hydrostatic Bearing Pad Operating in Static and low-Speed Conditions Using CFD Simulation

et al. 2023

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The design of a hydrostatic bearing pad is limited to simple geometry using analytical equations or one-parameter optimization based on experimental data. This study proposes and investigates a new two-parameter method for estimating optimal hydrostatic bearing pad proportions—recess area and position, using Computational Fluid Dynamics (CFD). In this study, 3D static CFD quarter model of a multi-recess hydrostatic bearing pad assuming laminar flow is used. The CFD model was calibrated based on experimentally obtained results and the literature. The recess pressure and resulting load are evaluated for a variety of recess positions and areas. Performance factors are calculated and interpolated in the MATLAB environment. Using the proposed novel two-parameter optimization, the energetic loss was reduced by 20% compared to the classical one-parameter approach. This methodology allows versatile and effective design of optimal hydrostatic bearings operating in low-speed conditions to achieve minimum energetic loss.

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Section: Optimal Shape Determinationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Novel Geometry Optimization Approach for Multi-Recess Hydrostatic Bearing Pad Operating in Static and low-Speed Conditions Using CFD Simulation

et al. 2023

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“…2 No relative sliding occurs between lubricant and solid. 3 Lubricant outlet pressure is zero. 4 Laminar flow of lubricant exists inside the bearing.…”

Section: Cfd Simulation Calculationmentioning

confidence: 99%

Analytical Research on the Bearing Characteristics of Oil Film Supplied with Constant Oil Flow Hydrostatic Turntables under Fixed Eccentric Load Condition

Wang

Zhang

et al. 2022

Processes

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This study was initiated in view of the phenomenon that hydrostatic turntable rails are prone to scrape damage when the liquid hydrostatic turntable is running under fixed partial load. The existing bias-load hydrostatic turntable oil film bearing characteristics are mainly calculated by using the calculus integration method and CFD fluid simulation method. The calculating formula obtained by the calculus integration method is complex and inefficient. The CFD fluid simulation calculation method requires 3D modeling and meshing of the oil film, which is a tedious and time-consuming process and may not yield convergent calculation results due to improper meshing methods or boundary condition settings. In order to solve the shortage of the above calculation methods, this paper simplifies and equates the uneven thickness of the oil film of each sealing edge of the oil pad of the bias-loaded hydrostatic rotary table to the equivalent uniform thickness of the oil film, and based on this idea, the analytical calculation formula of the oil film bearing capacity, bending moment and stiffness under constant bias-load conditions of the constant-flow liquid hydrostatic rotary table is derived. In this paper, Fluent software was used to numerically simulate the oil film under this working condition, and a hydrostatic turntable test bench was established to conduct an experimental study on the biased load hydrostatic turntable; the experimental data and simulation results were compared with the results obtained from this simplified method of calculating the oil film loading characteristics. The results show that the error of oil film bearing capacity is less than 6% and the error of overturning moment is less than 7%, which has verified the validity of the calculation method. The simplified analytical calculation method proposed in this paper is used to study the influence of tilt displacement rate, lubricant flow rate and turntable speed on the basic performance parameters of oil film, which provides a theoretical basis for the study of oil film load-bearing characteristics under constant bias-load conditions of the constant-flow liquid hydrostatic turntable.

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“…The measurement is performed for the oil temperature range tO = (10 ÷ 80) °C. The mineral oil is the most widespread liquid using in the hydrostatic systems nowadays [1].…”

Section: Experimental Measurementmentioning

confidence: 99%

Simulation of temperature influence on shear stress during mineral oil flow

et al. 2022

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The article is focused on the mathematical simulation of temperature influence on the shear stress during the mineral oil flow. The rotary rheometer is used to measure the shear stress. It works on the principle of torque measurement when the spindle rotates in the container with the measured liquid. The rotating spindle together with the container forms the hollow cylinder which is filled by measured oil. The shear stress is evaluated for the various oil temperatures. The software ANSYS Fluent is used to evaluate the partial numerical simulations. The experimental evaluation of the oil physical properties depending on the temperature is described in the article.

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Numerical modelling of the flow in the annular multi-recess hydrostatic thrust bearing using CFD methods

Cited by 9 publications

References 13 publications

A Novel Geometry Optimization Approach for Multi-Recess Hydrostatic Bearing Pad Operating in Static and low-Speed Conditions Using CFD Simulation

A Novel Geometry Optimization Approach for Multi-Recess Hydrostatic Bearing Pad Operating in Static and low-Speed Conditions Using CFD Simulation

Analytical Research on the Bearing Characteristics of Oil Film Supplied with Constant Oil Flow Hydrostatic Turntables under Fixed Eccentric Load Condition

Simulation of temperature influence on shear stress during mineral oil flow

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