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Volume 9, June 2016, Pages 18-44
Numerical analysis of capillary compensated micropolar fluid lubricated hole-entry journal bearings
Nathi Ram
Department of Mechanical & Automation Engineering, Indira Gandhi Delhi Technical University for Women, Kashmere Gate, Delhi-110006, India
Abstract
The micropolar lubricated symmetric/asymmetric hole-entry bearings using capillary restrictor have been analyzed in the present work. Reynolds equation for micropolar lubricant has been derived and solved by FEM. The results have been computed using selected parameters of micropolar lubricant for hole-entry hydrostatic/hybrid journal bearings. A significant increase in damping and stiffness coefficients is observed for bearings having micropolar parameter N2=0.9, lm=10 than similar bearings under Newtonian lubricant. The threshold speed gets increased when symmetric bearing lubricated under micropolar fluid than Newtonian lubricant. The threshold speed gets increased when symmetric bearing lubricated under micropolar fluid than Newtonian lubricant.
Keywords
Journal bearings; Micropolar lubricants; Restrictors; Finite element method
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