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Abstract
A solution technique for tilting pad journal bearings is presented that includes two dimensional heat conduction in the individual pads and applies a heat convection boundary condition to the pad ends. The method makes use of approximations to the axial pressure profile and the temperature profiles and includes heat transfer between the film and its boundaries. A second order profile is assumed to represent the temperature distribution across the film. The classical Reynolds equation is applied, using the viscosity based on the cross-film average of temperature. The journal surface temperature is given by a circumferential average of the film temperatures. Results of calculations are compared with published experimental results to determine appropriate values for the heat convection coefficient at different conditions. The coefficient is found to be speed dependent. When the variation with speed is approximated as linear, calculated pad surface temperature rises agree with experimentally measured values within 11 percent.
Presented at the 44th Annual Meeting in Atlanta, Georgia May 1–4, 1989
Notes
Presented at the 44th Annual Meeting in Atlanta, Georgia May 1–4, 1989
