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Abstract
The existence of feed groove pressure is significant to the control of journal bearing temperatures when operating at low eccentricities. A study of the effects of feed groove pressures on journal bearings having axial lubricant feed grooves has included preparation of a PC-operational finite difference code including specifiable feed groove boundary pressures as part of non-dimensional solutions. While capable of handling superlaminar variable viscosity cases, it is exercised herein on laminar isoviscous solutions. These, together with results from a similar zero speed code, are used to test the hypothesis that zero-feed flow solutions can be superimposed on zero-pressure hydrodynamic solutions to obtain combined lubricant flow rates.
The superposition method is found to indicate flow rates that are high by 10 to 20 percent. Other effects of feed groove pressures on load capacity, power loss, temperature rise and stiffness and damping are discussed.
Presented as a Society of Tribologists and Lubrication Engineers paper at the STLE/ASME Tribology Conference in San Antonio, Texas, October 5–8, 1987
Notes
Presented as a Society of Tribologists and Lubrication Engineers paper at the STLE/ASME Tribology Conference in San Antonio, Texas, October 5–8, 1987