Nano-fluid lubrication of single-layered porous hydrostatic bearing: a theoretical approach

Bhattacharjee, Biplab; Chakraborti, Prasun; Choudhuri, Kishan

doi:10.1007/s40430-020-02446-8

Cited by 14 publications

(11 citation statements)

References 24 publications

(61 reference statements)

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“…The results show that when using contrast nanolubricants and equivalent other Newtonian fluids and micropolar fluids, the exposure quality is significantly improved. 40,[62][63][64][65] The dispersion of CuO nanoparticles in three biolubricants is used to study the frictional performance and pressure distribution of nano-bio-lubricants, biolubricants, and ISO VG46 oil. The pressure distribution profiles are the same regardless of the type of oil at all speeds and loads.…”

Section: Types Of Nanofluid Additives Examplesmentioning

confidence: 99%

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Application of nanofluids on various performance characteristics of hydrodynamic journal bearing—A review

Mandal

Bhattacharjee

Biswas

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part E:

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Bearings are designed to support the loads normally applied to the shaft, while allowing relative movement between two machine elements. Journal or sliding bearings are perhaps the most well-known sorts of hydrodynamic bearings. The journal bearings contain no rolling elements and these bearings’ design and construction are simple, but their operation and theory are complex. Due to this and other advantages, journal bearings are much preferred in engineering applications. Simultaneously, the associated research and development have resulted in reasonable progress and therefore, a thorough review of these is earnestly felt. The static and dynamic characteristics of hydrodynamic journal bearings mainly depend on the lubricant viscosity and other factors such as load, speed, friction, and eccentricity. The review analysis focused on nanofluid lubricated hydrodynamic journal bearings are one of the rare topics of interest among tribologists. The use of a nanofluid as a lubricant is very important as it significantly improves the performance characteristics of the investigated bearing. The aggregation of nanoparticles in lubricants available commercially can cause a sharp increase in pressure drop and significantly improve the lubricant viscosity, which leads to an increase in load-carrying capacity. The tribological properties of various lubricants/base oils can be augmented by nanoparticles containing the lubricant. Studies have shown that compared to other conventional engine oils the load-carrying capacity is increased with nanoparticles containing the lubricant.

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Section: Types Of Nanofluid Additives Examplesmentioning

confidence: 99%

“…The results show that when using contrast nanolubricants and equivalent other Newtonian fluids and micropolar fluids, the exposure quality is significantly improved. 40,62–65…”

Section: Nanoparticles Added Lubricantsmentioning

confidence: 99%

Application of nanofluids on various performance characteristics of hydrodynamic journal bearing—A review

Mandal

Bhattacharjee

Biswas

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part E:

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“…Thermal and elastic effects on the performance of 170°p artial bearing were presented by Shamal et al 17 They discussed the circumferential effect of scratches on the static and thermal parameters. Non-Newtonian behavior of lubricant was studied by References [18][19][20] with couple stress fluid, [21][22][23] with nano-fluid. They showed an improvement in the performance of partial bearing as compared with Newtonian fluid.…”

Section: Introductionmentioning

confidence: 99%

Micropolar lubricant effects on the performance of partial journal bearings

Sharma

Lambah

Mittal

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part J:

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Present work deals with the computation of static performance of partial journal bearing, operated with micropolar lubricant. The non-dimensional Reynolds equation governs the lubricant flow in clearance space and finite element method is used to solve it. Static characteristics including bearing load capacity, attitude angle, friction force, friction factor, and side flow are presented. Input parameters are chosen such as partial angles 120° and 180° and a width-diameter ratio (1.0), for a range of micropolar fluid parameters. The numerically simulated results show that the bearing geometry and lubricant micropolar parameters on higher side, provide an improved static performance of partial journal bearing system.

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“…Suryawanshi and Pattiwar (2018) compare the performance of plain and elliptical journal bearing with the addition of nanoparticles by measuring the shear viscosity at various weight concentrations of nanoparticles by using Tribo tester and found the improvement in the performance of the elliptical bearing over the plain shaped bearing. Bhattacharjee et al (2020) studied the effect of nanoparticles–oil on hydrostatic bearing by using modified Darcy’s flow model and found that the performance is improved with the addition of nanoparticles in the lubricant. Sadabadi and Sanati Nezhad (2020) studied the performance of IF-WS2 nanofluid lubricant in bearing by using computational approach with discrete modeling, and the results showed the improvement in LCC.…”

Section: Introductionmentioning

confidence: 99%

Performance analysis of textured journal bearing operating with and without nanoparticles in the lubricant

Byotra

Sharma

2022

ILT

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Purpose This study aims to investigate the performance improvement of journal bearing by applying the arc-shaped textures on various regions of bearing expressly full, second half and pressure increasing regions operating with and without nanoparticles in the lubricant. Design/methodology/approach The Reynolds equation is solved numerically by using the finite element method to obtain static performance parameters such as load-carrying capacity (LCC) and coefficient of friction (COF), which are then compared with untextured bearing at eccentricity ratios of 0.2 to 0.8. Aluminum oxide (Al2O3) and copper oxide (CuO) nanoparticles additives are used, and viscosity variation due to the addition of additives in the base lubricant is computed for considering the range of temperatures 50 to 90°C at a weight fraction of 0.1 to 0.5% by using an experimentally validated regression model. Findings The results indicate that the maximum LCC and the lower COF are found in the pressure-increasing region. A maximum increase of 34.42% is observed in the pressure-increasing region without nanoparticles, and furthermore, with the addition of Al2O3 and CuO nanoparticles in lubricants in the same region, the LCC increased to 21 and 24%, respectively. Originality/value Designers should use optimal parameters from the present work to achieve high bearing performance.

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Nano-fluid lubrication of single-layered porous hydrostatic bearing: a theoretical approach

Cited by 14 publications

References 24 publications

Application of nanofluids on various performance characteristics of hydrodynamic journal bearing—A review

Application of nanofluids on various performance characteristics of hydrodynamic journal bearing—A review

Micropolar lubricant effects on the performance of partial journal bearings

Performance analysis of textured journal bearing operating with and without nanoparticles in the lubricant

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