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2 International Journal of Applied Mechanics and Engineering

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Pressure distribution in a porous squeeze film bearing lubricated with a Herschel-Bulkley fluid

Walicka A., Jurczak P.

International Journal of Applied Mechanics and Engineering

2016

Vol. 21, no. 4

951--965

The influence of a wall porosity on the pressure distribution in a curvilinear squeeze film bearing lubricated with a lubricant being a viscoplastic fluid of a Herschel-Bulkley type is considered. After general considerations on the flow of the viscoplastic fluid (lubricant) in a bearing clearance and in a porous layer the modified Reynolds equation for the curvilinear squeeze film bearing with a Herschel-Bulkley lubricant is given. The solution of this equation is obtained by a method of successive approximation. As a result one obtains a formula expressing the pressure distribution. The example of squeeze films in a step bearing (modeled by two parallel disks) is discussed in detail.

Pressure distribution in a curvilinear thrust hydrostatic bearing lubricated by a Herschel-Bulkley fluid

Walicka A., Falicki J.

International Journal of Applied Mechanics and Engineering

2008

Vol. 13, no 2

543-552

The flow of a Herschel-Bulkley fluid in a curvilinear thrust hydrostatic bearing is considered. The bearing is modeled by two curvilinear surfaces with common axis of symmetry. The flow in the bearing clearance is considered with inertia effect. Using the averaged inertia method the closed-form solution to the equations of motion is obtained. A step bearing is discussed as an example.