International Journal of Engineering Research in Mechanical and Civil Engineering (IJERMCE)

Monthly Journal for Mechanical and Civil Engineering

Volume2,April 2017,

Topic : Study on Thermo-Hydrodynamic Performance of a Finite Porous Journal Bearing

Authors: Mohammedrafi H. Kerur || T. Nagaraju, M. Ravi Prakash

Abstract:The present theoretical study predicts the static and dynamic performance characteristics of porous journal bearing considering rise in fluid film temperature. The modified Reynolds equation governing the pressure field within fluid-film is derived by simplifying the Navier-Stokes equation. The modified energy equations governing the temperature fields are also derived for both fluid film and porous medium. The modified Reynolds and energy equations are simultaneously solved using finite element method with appropriate iterative schemes. The influence of permeability of porous matrix on static and dynamic performance characteristics of porous journal bearing is computed using thermo-hydrodynamic (THD) analysis and compared with the isothermal performance characteristics of the same bearing. The performance parameters of finite porous journal bearings under THD analysis were found to be significantly influenced by the permeability of porous matrix. The influence of permeability of porous matrix has observed to couple with operating eccentricity, speed of journal and temperature effects. .

Keywords: Finite element method, performance characteristics, Porous journal bearing, Thermal effects

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DOI: 01.1617/vol4/iss4/pid84267


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