Thermal Effects in Bingham Plastic Fluid Film Lubrication of Asymmetric Rollers

Gadamsetty, Revathi; Sajja, Venkata Subrahmanyam; Sekhar, P. Sudam; Prasad, Dhaneshwar

doi:10.5098/hmt.15.18

Cited by 5 publications

(14 citation statements)

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“…Prasad and Subrahmanyam [11] demonstrated reverse flow. The back flow is eliminated as the fluid moves forward [7,[11][12][13]. However, the velocity profile, which can be seen in Fig.…”

Section: Velocity Profilementioning

confidence: 99%

“…The dimensionless pressure p is quantitatively estimated and shown in Figs. (5)(6)(7). Figures (5) and (6) show that in the Newtonian ( 0 0   ) and non-Newtonian ( 0 0   ) instances, respectively, p rises as rolling ratio U rises.…”

Section: Pressure Profilementioning

confidence: 99%

“…Distributions of lubricant velocity are shown. Additionally, Revathi et al [7] investigated a topic pertaining to the lubricating properties of anti-symmetric rollers using a non-Newtonian incompressible Bingham plastic fluid. For both Newtonian and non-Newtonian fluids, the temperatures, pressures, loads, and traction forces, in particular, are in good agreement with prior findings.…”

Section: Introductionmentioning

confidence: 99%

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Lubrication of asymmetric rollers considering viscosity as function of mean temperature

Lanka¹,

Sajja²,

Prasad³

2023

International Journal of Applied Mechanics and Engineering

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A theoretical analysis of an asymmetric roller bearing system with cavitation that is hydro-dynamically lightly loaded and lubricated by a thin, incompressible fluid is presented. The lubricant adheres to the non-Newtonian Bingham plastic fluid concept, in which the viscosity of the fluid should change depending on the mean film temperature. The continuity and momentum equations, which regulate fluid flow, are first solved analytically and then numerically using MATLAB. Through graphs and tables, some key bearing features are addressed and further explained. This leads to the conclusion that there is a discernible difference between Newtonian and non-Newtonian fluids in terms of pressure, temperature, load, and traction. The findings are good in line with the body of literature.

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“…Prasad and Subrahmanyam [11] demonstrated reverse flow. The back flow is eliminated as the fluid moves forward [7,[11][12][13]. However, the velocity profile, which can be seen in Fig.…”

Section: Velocity Profilementioning

confidence: 99%

Section: Pressure Profilementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Lubrication of asymmetric rollers considering viscosity as function of mean temperature

Lanka¹,

Sajja²,

Prasad³

2023

International Journal of Applied Mechanics and Engineering

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“…The main goal of this study is to characterize the heat transfer in the case of flow in a cylindrical pipe of fluids whose rheological behavior can be modeled by Herschel-Bulkley law and by considering both the viscous dissipation and the axial heat conduction and this with boundary conditions fixing either a constant temperature at the wall or the value of an exchange coefficient with an external fluid. This type of behavior, which includes the effect of yield stress, corresponds in practice, to an important class of products treated by foods, pharmaceutical, cosmetics, polymers and chemical processing industries (Coussot 2014, Vijaya et al 2020, Revathi et al 2020. These products require various heat treatments (heating, cooling) during their processing or their use.…”

Section: Introductionmentioning

confidence: 99%

Effects of Viscous Dissipation and Axial Heat Conduction on Forced Convection Duct Flow of Herschel-Bulkley Fluid With Uniform Wall Temperature or Convective Boundary Conditions

Khatyr¹,

Naciri²

2022

Front. Heat Mass Transf.

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The aim is to study the asymptotic behavior of the temperature field for the laminar forced convection of a Herschel-Bulkley fluid flowing in a circular duct considering both viscous dissipation and axial heat conduction. The asymptotic bulk and mixing Nusselt numbers and the asymptotic bulk and mixing temperature distribution are evaluated analytically in the cases of uniform wall temperature and convection with an external isothermal fluid. In particular, it has been proved that the fully developed value of Nusselt number for convective boundary conditions is independent of the Biot number and is equal to the value of fully developed Nusselt number for uniform wall temperature. The analytical results obtained in the fairly general case of Herschel-Bulkley fluid, which considers both the existence of a yield shear-stress as well as a variable viscosity as a function of shear, are compared with solutions available for the simpler cases of Newtonian fluid and some non-Newtonian fluids with viscous dissipation and/or axial heat conduction taken into account.

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“…P Sibanda (Sibanda and Makinde (2012)) and his associates investigate the hydromagnetic steady flow and heat transfer characteristics of an incompressible viscous electrically conducting fluid past a rotating disk in a porous medium with ohmic heating, Hall current and viscous dissipation . Many authors studied this type of models under different conditions and these articles can be found in (Raju et al (2019), Nazir andMahmood (2011), Osalusi et al (2007), Gu et al (2020), Abed et al (2020), Tufail et al (2020, Gadamsetty et al (2020)).…”

Section: Introductionmentioning

confidence: 99%

Analysis of MHD Flow and Heat Transfer of Laminar Flow Between Porous Disks

Pai¹,

Kumar²,

Devaki³

2021

Frontiers in Heat and Mass Transfer

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A study is carried out for the two dimensional laminar flow of conducting fluid in presence of magnetic field. The governing non-linear equations of motion are transformed in to dimensionaless form. A solution is obtained by homotopy perturbation method and it is valid for moderately large Reynolds numbers for injection at the wall. Also an efficient algorithm based finite difference scheme is developed to solve the reduced coupled ordinary differential equations with necessary boundary conditions. The effects of Reynolds number, the magnetic parameter and the pradantle number on flow velocity and tempratare distribution is analysed by both the methods and results agree well with previous work for special cases. It is observed that overall effect of magnetic field is same as Hartmann flow. Further the analysis predicts that the heat transfer at the surface of the disks increases with increase in Reynolds number, magnetic parameter and Prandle number. The shear stress at the wall decreases with increase in injection, whearas increase with increase in magnetic parameter. The study of such phenomenon is beneficial in the industry for thermal control in polymeric processing.

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Thermal Effects in Bingham Plastic Fluid Film Lubrication of Asymmetric Rollers

Cited by 5 publications

References 0 publications

Lubrication of asymmetric rollers considering viscosity as function of mean temperature

Lubrication of asymmetric rollers considering viscosity as function of mean temperature

Effects of Viscous Dissipation and Axial Heat Conduction on Forced Convection Duct Flow of Herschel-Bulkley Fluid With Uniform Wall Temperature or Convective Boundary Conditions

Analysis of MHD Flow and Heat Transfer of Laminar Flow Between Porous Disks

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