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Surface roughness effects in a curvilinear squeeze film bearing lubricated by a power-law fluid

Walicka A.

International Journal of Applied Mechanics and Engineering

2009

Vol. 14, no 1

277-293

The flow of a power-law lubricant in a squeeze film bearing is considered. The bearing is modelled by two curvilinear rough surfaces. The flow in the bearing clearance is considered without inertia. Using the Christensen stochastic model of a surface roughness the closed-form solution is obtained. A step bearing and a spherical bearing are discussed as examples. It is shown that the power-law exponent and the roughness considerably influence the bearing performance.

Surface roughness effects in a curvilinear squeeze film bearing with a porous pad lubricated by a power-law fluid

Walicka A.

International Journal of Applied Mechanics and Engineering

2009

Vol. 14, no 2

559-583

The flow of a power-law lubricant in a squeeze film bearing with one porous wall is considered. The bearing is modelled by two curvilinear rough surfaces and the porous wall is adheres to the curved non-porous surface. The flow in the bearing clearance is considered without inertia and the Navier-Stokes and Poisson equations are uncoupled by using the Morgan-Cameron approximation. Using the Christensen stochastic model of a surface roughness a closed-form solution is obtained. A step bearing and a spherical bearing are discussed as examples. It is shown that the power-law exponent and the roughness influence the bearing performance considerably.

Inertia and surface roughness effects in a curvilinear squeeze film bearing lubricated by a power-law fluid

Walicka A.

International Journal of Applied Mechanics and Engineering

2009

Vol. 14, no 4

1139-1161

The flow of a power-law lubricant in a squeeze film bearing is considered. The bearing is modelled by two curvilinear rough surfaces. The flow in the bearing clearance is considered with inertia effects. Using the Christensen stochastic model of a surface roughness a closed-form solution is obtained. A step bearing and a spherical bearing are discussed as examples. It is shown that the power-law exponent and the roughness considerably influence the bearing performance.