Numerical analysis of steady-state performance of misaligned journal bearings with turbulent effect

Das, Subrata; Guha, Sujoy K.

doi:10.1007/s40430-019-1583-4

Cited by 14 publications

(8 citation statements)

References 20 publications

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“…Lv and Jiao [16] presented the misalignment in vertical direction and discussed the change of friction coefficient with varying rotating speeds including the effect of turbulent under the same external loads. In addition, many researchers have investigated that the angular misalignment of journal led to the deterioration of bearing performance [17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Modelling non-Gaussian surfaces and misalignment for condition monitoring of journal bearings

Zhang

et al. 2021

Measurement

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Section: Introductionmentioning

confidence: 99%

Modelling non-Gaussian surfaces and misalignment for condition monitoring of journal bearings

Zhang

et al. 2021

Measurement

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“…Das and Guha 30 scrutinized the misaligned journal bearing under turbulent condition. The authors have outlined the effect of journal misalignment with turbulence on the load capacity, friction factor, and end flow.…”

Section: Introductionmentioning

confidence: 99%

Performance of finite bearing under the combined influence of turbulent and non-Newtonian lubrication

Soni

2021

Proceedings of the Institution of Mechanical Engineers, Part J:

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The current numerical investigation is used to predict the dynamic performance of finite bearing considering the combined influence of turbulence regime and non-Newtonian flow. With appropriate assumptions, the Navier–Stokes and continuity equation have been revised by the linear turbulence and non-Newtonian fluid model together. The clearance space of the finite bearing has been determined by the finite element method adopting Galerkin’s procedure and robust iteration technique. The cylindrical coordinate forms of momentum and continuity equations are used for the flow field of the finite bearing assuming the turbulent regime and non-Newtonian lubricant. Dynamic performance parameters of a finite bearing have been computed regarding direct and cross-coupled fluid-film coefficients, equivalent stiffness coefficient, whirl ratio, and critical mass at different eccentricity ratios for distinct values of Reynolds numbers preferably up to 13,300 and varied values of non-linear factor of the non-Newtonian fluid model. The obtained results revealed the performance enhancement in the combined regime as compared to pure turbulence and non-Newtonian flow conditions. The stability of finite bearing is significantly improved under the proposed severe flow regime.

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“…Later, many other research works 36–41 had been carried out to analyze the effect of misalignment on steady-state hydrodynamic journal with non-Newtonian fluid. Recently, Das and Guha 42 made a numerical research on the steady-state hydrodynamic plain journal bearing considering the effect of misalignment and turbulency with micropolar lubrication. They observed that at lower degree of misalignment load capacity and misalignment moment decreased, but at higher degree of misalignment a reverse trend was seen.…”

Section: Introductionmentioning

confidence: 99%

Analysis of misaligned hydrodynamic porous journal bearings in the steady-state condition with micropolar lubricant

Baidya¹,

Das

2019

Proceedings of the Institution of Mechanical Engineers, Part J:

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Impregnated porous bearings are used in different machines and other applications. In this work, an analytical work is investigated to evaluate the steady-state characteristics of such self-lubricated porous journal bearings in micropolar lubrication with misalignment. Bi-axial misalignments are considered, namely axial (along the vertical direction) and twisting (along the horizontal direction). Reynolds equation is modified to fit bearing misalignment, by incorporating the effects of micropolarity of the lubricant and porosity of the bush. Darcy’s equation that considers porosity and the misalignment Reynolds’s equation applicable for film region are numerically solved using finite difference method applying successive over-relaxation scheme employing appropriate boundary conditions to obtain the dimensionless fluid film pressure at steady state, which is used to get the steady-state characteristics e.g. load parameter, moment of misalignment, frictional force, and friction parameter.

show abstract

Numerical analysis of steady-state performance of misaligned journal bearings with turbulent effect

Cited by 14 publications

References 20 publications

Modelling non-Gaussian surfaces and misalignment for condition monitoring of journal bearings

Modelling non-Gaussian surfaces and misalignment for condition monitoring of journal bearings

Performance of finite bearing under the combined influence of turbulent and non-Newtonian lubrication

Analysis of misaligned hydrodynamic porous journal bearings in the steady-state condition with micropolar lubricant

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