Study and analysis of single and double layered porous journal bearing incorporating nano micropolar fluid

Abstract

A journal bearing is a machine element which supports another moving machine element newlineknown as a journal. One of the basic purposes of a bearing is to provide a frictionless newlineenvironment to support and guide a rotating shaft. A good bearing material should be heat newlineresistant, corrosion resistant. In order to reduce the frictional and wear resistance, and to carry newlineaway the heat generated, a layer of fluid which is known as a lubricant has to supply through newlinethe porous layer of the journal bearing. Readily availability, cheaper in cost, self-lubricating newlinein nature, less maintenance requirement, even pressure generation, better damping newlinecharacteristics etc. are the advantages in using a porous pad in a journal bearing which results newlinein better performance of the journal bearing. On the basis of Eringen s micropolar fluid newlinetheory, a theoretical analysis of hydrodynamic film behaviour for short partial porous journal newlinebearings lubricated by micropolar fluids is presented in this report.