Open AccessFeasibility of influencing the dynamic fluid film coefficients of a multirecess journal bearing by means of active hybrid lubrication
Author(s) -
Ilmar Santos,
Flávio Yukio Watanabe
Publication year - 2003
Publication title -
journal of the brazilian society of mechanical sciences and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.431
H-Index - 40
eISSN - 1806-3691
pISSN - 1678-5878
DOI - 10.1590/s1678-58782003000200007
Subject(s) - lubrication , bearing (navigation) , materials science , mechanical engineering , mechanics , petroleum engineering , engineering , composite material , computer science , physics , artificial intelligence
The main objective of this research project is the investigation of multirecess hydrostatic journal bearings with active hybrid (hydrostatic and hydrodynamic) lubrication. This paper gives a theoretical contribution to the modeling of this kind of bearing, combining computational fluid dynamics and control techniques. The feasibility of influencing the dynamic fluid film coefficients (stiffness and damping) by means of a controllable fluid injection into opposed bearing recesses is investigated. By controlling the pressure and flow injection using servo control systems, it is possible to obtain significant modifications of active hybrid forces, which can be useful while reducing vibration and stabilizing rotating machines