Magnetohydrodynamic lubrication flow between parallel plates

Maki, E. R.; Kuzma, Dennis C.; Donnelly, Russell J.

doi:10.1017/s002211206600137x

Cited by 55 publications

(34 citation statements)

References 1 publication

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“…This variation in lubricant viscosity will certainly affect its effectiveness. In order to avoid undesirable viscosity change with temperature, the use of electrically conducting fluids and magnetic liquids has received great attention [1,2,14,18,19]. Hydromagnetic lubricants have higher thermal and electrical conductivity, but lower viscosity than conventional lubricating oils.…”

Section: Introductionmentioning

confidence: 99%

On inherent irreversibility in a reactive hydromagnetic channel flow

Makinde

Bég

2010

J. Therm. Sci.

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This study is devoted to investigate the inherent irreversibility and thermal stability in a reactive electrically conducting fluid flowing steadily through a channel with isothermal walls under the influence of a transversely imposed magnetic field. Using a perturbation method coupled with a special type of Hermite-Pade´ approximation technique, the simplified governing non-linear equation is solved and the important properties of overall flow structure including velocity field, temperature field and thermal criticality conditions are derived which essentially expedite to obtain expressions for volumetric entropy generation numbers, irreversibility distribution ratio and the Bejan number in the flow field.

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Section: Introductionmentioning

confidence: 99%

On inherent irreversibility in a reactive hydromagnetic channel flow

Makinde

Bég

2010

J. Therm. Sci.

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“…Some representative experimental and numerical studies include the study of MHD squeeze film characteristics by Maki and Kuzma [5], Usha and Vimala [6], Lin et al [7] and Lin [8]. Additionally, Agrawal [9], Anwar and Rodkiewich [10], and Gupta and Bhat [11] have studied the lubricant behaviour in MHD slider bearings.…”

Section: Introductionmentioning

confidence: 99%

Squeeze film lubrication of coupled stress electrically conducting inertial fluids in wide parallel rectangular conjunctions subjected to a magnetic field

Daliri

Jalali-Vahid

Rahnejat

2013

Proceedings of the Institution of Mechanical Engineers, Part J:

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The paper presents analytical solution of squeeze film characteristics in wide parallel rectangular conjunctions with incompressible electrically conducting couple stress fluids subjected to a magnetic field. Analytical expressions are obtained by combined solution of modified Reynolds equation and Stokes micro-continuum for couple stress fluids with averaged inertia. Various cases of magneto-hydrodynamic, conducting and non-conducting fluid characteristics with and without convective inertial contributions are investigated. It is shown that, in general, couple stress fluids enhance the load carrying capacity of the contact and inhibit the incidence of thin films which can result in direct contact of surfaces. Convective inertia also significantly improves the load carrying capacity. However, with impulsive loading the response time of couple stress fluids deteriorates relative to Newtonian lubricants on account of their increased viscosity. An important conclusion of the study is that magneto-hydrodynamic couple stress fluids are best suited to applications with high relatively steady load applications.

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“…The effects of magnetic field in squeeze lubrication have been encouraging because magnetic field has important applications in the industry with obvious relevance to technology-based world. The MHD lubrication in an externally pressurized thrust bearing has been investigated both theoretically and experimentally by Maki et al [1]. Limited studies of MHD lubrication are available in the literature which includes MHD slider bearings [2,3], MHD journal bearings [4,5], and MHD squeeze film bearings [6].…”

Section: Introductionmentioning

confidence: 99%

Numerical Solution of the MHD Reynolds Equation for Squeeze-Film Lubrication between Porous and Rough Rectangular Plates

2013

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The present theoretical study investigates the effects of surface roughness and couple-stress fluid between two rectangular plates, of which an upper rough plate has a roughness structure and the lower plate has a porous material in the presence of transverse magnetic field. The lubricant in the gap is taken to be a viscous, incompressible, and electrically conducting couple-stress fluid. This gap is separated by a film thickness H which is made up of nominal smooth part and rough part. The modified Reynolds equation in the film region is derived for one-dimensional longitudinal roughness structure and solved numerically using multigrid method. The numerical results for various physical parameters are discussed in terms of pressure distribution, load capacity, and squeeze film time of the bearing surfaces. Our results show that, the pressure distribution, load capacity and squeeze film time are predominant for larger values of Hartman number and roughness parameter, and for smaller values of couple-stress parameters when compared to their corresponding classical cases.

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Magnetohydrodynamic lubrication flow between parallel plates

Cited by 55 publications

References 1 publication

On inherent irreversibility in a reactive hydromagnetic channel flow

On inherent irreversibility in a reactive hydromagnetic channel flow

Squeeze film lubrication of coupled stress electrically conducting inertial fluids in wide parallel rectangular conjunctions subjected to a magnetic field

Numerical Solution of the MHD Reynolds Equation for Squeeze-Film Lubrication between Porous and Rough Rectangular Plates

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