Thermal Analysis of Journal bearing with controlled slip/no-slip boundary condition and Non-Newtonian Rheology of lubricant

Arif, Mohammad; Kango, Saurabh; Shukla, Dinesh Kumar

doi:10.1088/2051-672x/ac077b

Cited by 4 publications

(7 citation statements)

References 30 publications

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“…For considering the effect of temperature rise on lubricant viscosity and lubricant pressure distribution following dimensionless energy equation with assuming negligible temperature variation along lubricant film thickness and total heat generated carried away by flowing lubricant is need to be solved [26,30,31].…”

Section: Consideration Of the Thermal Effectmentioning

confidence: 99%

“…After calculating the dimensionless temperature T ( ¯) for rheological lubricants following relation has been used for updating the room temperature dimensionless viscosity m ( ¯) of lubricants [26,30,31].…”

Section: Consideration Of the Thermal Effectmentioning

confidence: 99%

“…In recent studies, Li et al [25] derived modified Reynold equation with considering the combined effect of slip boundary condition and non-Newtonian rheology of lubricants. Arif et al [26] solved this modified Reynold equation with considering the effect of temperature variation on the viscosity of non-Newtonian lubricants. Their study indicates that as compared to conventional Newtonian lubricants, shear-thinning lubricants with slip effect on partial circumferential region shows maximum percentage of improvements in the load-carrying capacity and coefficient of friction.…”

Section: Introductionmentioning

confidence: 99%

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Effect of slip boundary condition and non-newtonian rheology of lubricants on the dynamic characteristics of finite hydrodynamic journal bearing

Arif¹,

Kango²,

Shukla³

2022

Surf. Topogr.: Metrol. Prop.

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In the present study, the influence of various slip zone locations on the dynamic stability of finite hydrodynamic journal bearing lubricated with non-Newtonian and Newtonian lubricants has been investigated. Linearized equation of motion with free vibration of rigid rotor has been used to find the optimum location of the slip region with maximum stability margin limit. It has been observed that bearing with interface of slip and no-slip region near the upstream side of minimum film-thickness location is effective in improving the direct and cross stiffness coefficient, critical mass parameter, and critical whirling speed. The magnitude of dynamic performance parameters with slip effect is highly dependent on the rheology of lubricant. Shear-thinning lubricants combined with slip boundary condition shows higher dynamic stability as compared to the Newtonian lubricants under the conventional boundary condition. For all considered rheology of lubricants, the dynamic stability of bearing with slip effect is improving by increasing the eccentricity ratio.

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Section: Consideration Of the Thermal Effectmentioning

confidence: 99%

Section: Consideration Of the Thermal Effectmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of slip boundary condition and non-newtonian rheology of lubricants on the dynamic characteristics of finite hydrodynamic journal bearing

Arif¹,

Kango²,

Shukla³

2022

Surf. Topogr.: Metrol. Prop.

Self Cite

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“…Wang et al [54] solved the problem of SBC by boundary-lattice Boltzmann scheme. Arif et al [55] analyzed SBC of Non-Newtonian rheology of lubricant. Dhifaoui [56] illustrated a weak solution for the outside static Stokes equations with SBC.…”

Section: Introductionmentioning

confidence: 99%

Irreversibility Analysis of Electromagnetic Hybrid Nanofluid Over a Stretchable Surface with Cattaneo-Christov Heat Flux Model: Finite Element Approach

Qureshi

2022

Preprint

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To get a better heat transmission capacity of ordinary fluids, new hybrid nanofluids (HNFs) with a considerably greater exponent heat than nanofluids (NFs) are being used. HNFs, which have a greater heat exponent than NFs, are being applied to increase the HT capacities of regular fluids. Two-element nanoparticles mixed in a base fluid make up HNFs. This research investigates the flow and HT features of HNF across a slick surface. As a result, the geometric model is explained by employing symmetry. The technique includes nanoparticles shape factor, Magnetohydrodynamics (MHD), porous media, Cattaneo-Christov, and thermal radiative heat flux effects. The governing equations are numerically solved by consuming a method known as the Galerkin finite element method (FEM). In this study, H2O-water was utilized as an ironic, viscous improper fluid, and HNF was investigated. Copper (Cu) and Titanium Alloy (Ti6Al4V) nanoparticles are found in this fluid. The HT level of such a fluid (Ti6Al4V-Co/H2O) has steadily increased in comparison to ordinary Co-H2O NFs, which is a significant discovery from this work. The inclusion of nanoparticles aids in the stabilization of a nanofluid flowing and maintains the symmetry of the flow form. The thermal conductivity is highest in the boundary-lamina-shaped layer and lowest in sphere-shaped nanoparticles. A system's entropy increases by three characteristics: their ratio by fractional size, their radiated qualities, and their heat conductivity modifications.

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“…Wang et al 54 solved the problem of SBC by boundary-lattice Boltzmann scheme. Arif et al 55 analyzed SBC of Non-Newtonian rheology of lubricant. Dhifaoui 56 illustrated a weak solution for the outside static Stokes equations with SBC.…”

mentioning

confidence: 99%

Irreversibility analysis of electromagnetic hybrid nanofluid for Cattaneo–Christov heat flux model using finite element approach

Qureshi

2023

Sci Rep

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To get a better heat transmission capacity of ordinary fluids, new hybrid nanofluids (HNFs) with a considerably greater exponent heat than nanofluids (NFs) are being used. HNFs, which have a greater heat exponent than NFs, are being applied to increase the HT capacities of regular fluids. Two-element nanoparticles mixed in a base fluid make up HNFs. This research investigates the flow and HT features of HNF across a slick surface. As a result, the geometric model is explained by employing symmetry. The technique includes nanoparticles shape factor, Magnetohydrodynamics (MHD), porous media, Cattaneo–Christov, and thermal radiative heat flux effects. The governing equations are numerically solved by consuming a method known as the Galerkin finite element method (FEM). In this study, H2O-water was utilized as an ironic, viscous improper fluid, and HNF was investigated. Copper (Co) and Titanium Alloy (Ti6Al4V) nanoparticles are found in this fluid. The HT level of such a fluid (Ti6Al4V-Co/H2O) has steadily increased in comparison to ordinary Co-H2O NFs, which is a significant discovery from this work. The inclusion of nanoparticles aids in the stabilization of a nanofluid flowing and maintains the symmetry of the flow form. The thermal conductivity is highest in the boundary-lamina-shaped layer and lowest in sphere-shaped nanoparticles. A system's entropy increases by three characteristics: their ratio by fractional size, their radiated qualities, and their heat conductivity modifications. The primary applications of this examination are the biological and medical implementations like dental and orthopedic implantable devices, as well as other devices such as screws and plates because they possess a favorable set of characteristics such as good biomaterials, corrosion resistance and wear, and great mechanical characteristics.

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Thermal Analysis of Journal bearing with controlled slip/no-slip boundary condition and Non-Newtonian Rheology of lubricant

Cited by 4 publications

References 30 publications

Effect of slip boundary condition and non-newtonian rheology of lubricants on the dynamic characteristics of finite hydrodynamic journal bearing

Effect of slip boundary condition and non-newtonian rheology of lubricants on the dynamic characteristics of finite hydrodynamic journal bearing

Irreversibility Analysis of Electromagnetic Hybrid Nanofluid Over a Stretchable Surface with Cattaneo-Christov Heat Flux Model: Finite Element Approach

Irreversibility analysis of electromagnetic hybrid nanofluid for Cattaneo–Christov heat flux model using finite element approach

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