Analysis of aerostatic porous journal bearings using the slip velocity boundary conditions

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Abstract

A theoretical analysis of the static characteristics of aerostatic porous journal bearings is presented using the slip velocity boundary condition at the interface of the lubricating film and porous surface of the bearing. With thin wall bearings, the pressure in the porous bushing is obtained in closed form and the modified Reynolds equation is solved numerically using the finite difference method. The load capacity and the mass rate of flow are expressed non-dimensionally and are calculated numerically for different operating conditions. Variation in W ̄ and G ̄ with the feeding parameter and other parameters is shown graphically. The effect of velocity slip on W ̄ and G ̄ for different operating conditions was studied. The theoretical results are compared with a similar available solution using a three-dimensional flow model in the bushing. There is near-perfect agreement.

Original languageEnglish
Pages (from-to)35-47
Number of pages13
JournalWear
Volume76
Issue number1
DOIs
StatePublished - Feb 1 1982
Externally publishedYes

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