Numerical and Experimental Studies on Performance Enhancement of Journal Bearings Using Nanoparticles Based Lubricants

Dang, Rajeev Kumar; Goyal, Deepam; Chauhan, Amit; Dhami, S. S.

doi:10.1007/s11831-021-09538-1

Cited by 12 publications

(11 citation statements)

References 186 publications

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“…When a bearing operates at high speeds, the heat generated by high shear rates in the lubricant film raises its temperature, lowering the lubricant's viscosity and affecting journal bearing performance [23]. Furthermore, Dang et al, [1] stated in their paper that an increase in temperature causes a decrease in lubricant viscosity, which leads to a degradation in bearing performance. As a result, obtaining the bearing performance characteristics while maintaining constant viscosity may result in an incorrect prediction about the bearing [24].…”

Section: Temperature-dependent Viscositymentioning

confidence: 99%

“…Due to environmental concerns, vegetable oil is still regarded as the best substitute for hydrocarbon-based synthetic lubricants. The poor oxidation stability of vegetable oil makes it unsuitable for use as a bio lubricant [1]. Afifah and her friends [2] stated that the global awareness of declining environmental health, climate change, increasing energy demand, and crude petroleum reserve depletion has increased motivation and the need for sustainable resources.…”

Section: Introductionmentioning

confidence: 99%

“…Journal bearings have been developed in various geometrical designs to meet load capacity, operational speed, stable operation, and cost-effective manufacturing [1]. Surface texturing is a more cost-effective method of die modification than tool change and hot work.…”

Section: Introductionmentioning

confidence: 99%

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Potential of RBD Palm Oil as a Lubricant in Textured Journal Bearing using CFD with Consideration of Cavitation and Conjugate Heat Transfer

Rasep

Yazid

Samion

et al. 2022

CFDL

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The revolution of tribology technology involved lubricant has driven researchers recently due to strict environmental policy. RBD palm oil has remarkable properties that can improve the performance of plain or textured journal bearings. At the same time, surface texture modification can improve journal bearing performance. The potential of RBD palm oil as an environmentally friendly lubricant in textured journal-bearing applications was investigated in this case study. ANSYS FLUENT was chosen as a method of analysis. The validation study was compared with experimental data to validate the correct approach with actual journal bearing. In addition, the cavitation model and conjugate heat transfer were considered in this case study. Results revealed that RBD Palm oil performed well when the surface texture was introduced at the divergent area as compared to convergent area and plain journal bearing. The suitable condition of textured journal bearing needs to be chosen correctly to optimize the maximum film pressure of journal bearing load and load-carrying capacity of journal bearing. The optimum condition of a textured journal bearing is when the rotational speed of the journal bearing is above 800 rpm, and the eccentricity ratio is above 0.3. In conclusion, combining the correct location of surface texture and the suitable parameter condition of journal bearing will make RBD palm oil perform well as a renewable source of lubricant in textured journal bearing applications.

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Section: Temperature-dependent Viscositymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Potential of RBD Palm Oil as a Lubricant in Textured Journal Bearing using CFD with Consideration of Cavitation and Conjugate Heat Transfer

Rasep

Yazid

Samion

et al. 2022

CFDL

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“…One of the fields of research that is receiving much attention is the use of ionic liquids [1][2][3] and nanoparticles [4,5] as lubricant additives in base oils. The need for improving the tribological performance of sliding systems, in particular copper-copper contacts, is especially relevant in such strategic fields as those of electric and transport applications.…”

Section: Introductionmentioning

confidence: 99%

Triprotic Ammonium Oleate Ionic Liquid Crystal Lubricant for Copper-Copper Friction and Wear Reduction

et al. 2022

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The triprotic ammonium carboxylate ionic liquid crystal (2-hydroxyethyl)ammonium oleate (MO) has been studied as a neat lubricant and as a lubricant additive in two base oils, PAO6 and 100N. The lubricants have been used in commercially pure copper-OFHC copper balls on disk reciprocating sliding contact at room temperature. Neat MO presents a very good lubricating performance, with a friction coefficient of 0.06 and a wear rate of OFHC copper disk of 4.15 × 10−7 mm3/N·m. These results are, respectively, 94% and 98% lower than those obtained for PAO6, with similar reductions obtained with respect to 100N. MO has also been studied as an additive in 2wt.% proportion. The severe abrasive wear mechanism that takes place in the presence of neat base oils is reduced by the MO additive.

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“…Nanoparticles have been researched and developed (Wang et al , 2020a, 2020 b) for a long time as a kind of additives with special performance (He et al , 2017; Ren et al , 2020; Jason et al , 2020). Compared with traditional additives, nanoparticles are appealing by virtue of their chemical and thermal stability under tribological conditions (Abd-Elwaheda et al , 2020; Dang et al , 2021). Nanoparticles as additives can be roughly divided into metals and their oxides, sulfur, phosphate, carbon-based compounds and their derivatives (Sharma et al , 2019).…”

Section: Introductionmentioning

confidence: 99%

Tribological study of TiO2 nanoparticles modified with stearic acid as additives in lithium grease

Zhang

Han

et al. 2021

ILT

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Purpose The purpose of this paper is to improve the properties of metal nanoparticles which are easy to agglomerate and hard to disperse evenly, thus limiting the application of metal nanoparticles in grease. A novel technology was proposed for modifying metal oxide to improve the dispersibility of nanoparticles. Design/methodology/approach SA-TiO2 nanoparticles were synthesized using an in-situ esterification method followed by surface modification with stearic acid. The microstructure of the nanoparticles was characterized by scanning electron microscope, transmission electron microscope and Fourier transform infrared spectroscopy and their thermal stability was evaluated by thermogravimetric analyzer. The tribological properties of the SA-TiO2 nanoparticles as additives in lithium grease were evaluated with a four-ball tester and TE77 reciprocating friction tester. The worn surfaces of the steel balls were investigated by EDS and XPS. Findings The prepared nanoparticles can be well dispersed in the lithium grease and possess much better tribological properties compared to traditional nanoparticles. The results indicated that the excellent tribological performance of SA-TiO2 was attributed to the chemical reaction film composing of Fe2O3, iron oxide and other organic compounds. Originality/value This paper provides a method to prevent the agglomeration of nano-TiO2 by surface modification with stearic acid. And the prepared nanoparticles can effectively improve the tribology performance of lithium grease.

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Numerical and Experimental Studies on Performance Enhancement of Journal Bearings Using Nanoparticles Based Lubricants

Cited by 12 publications

References 186 publications

Potential of RBD Palm Oil as a Lubricant in Textured Journal Bearing using CFD with Consideration of Cavitation and Conjugate Heat Transfer

Potential of RBD Palm Oil as a Lubricant in Textured Journal Bearing using CFD with Consideration of Cavitation and Conjugate Heat Transfer

Triprotic Ammonium Oleate Ionic Liquid Crystal Lubricant for Copper-Copper Friction and Wear Reduction

Tribological study of TiO2 nanoparticles modified with stearic acid as additives in lithium grease

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