Analysis of Two-layered Porous Journal Bearing using the Brinkman Model

• Main Authors: T. , V. V. L. N. Rao, A. , M. A. Rani, T. , Nagarajan, F. , M. Hashim
• Format: Citation Index Journal
• Published: 2013
• Subjects: TJ Mechanical engineering and machinery
• Online Access: http://eprints.utp.edu.my/9243/1/JAS_2610-2615.pdf; http://eprints.utp.edu.my/9243/

The present study evaluates the effects of two-layered long porous journal bearing configuration on improvement in load capacity and reduction in coefficient of friction. The Brinkman model is utilized to model the flow in the porous region. A modified form of Reynolds equation is derived considering two-layered porous region adjacent to the bearing surface. The non-dimensional pressure and shear stress expressions are obtained using the Reynolds boundary conditions. Results of non-dimensional load capacity and coefficient of friction are presented as a function of permeability and thickness of porous layers. Based on the results presented in the study, a low permeability porous layer that adheres to high permeability porous layer on bearing surface could significantly enhance load capacity and reduce coefficient of friction.