Comparison of Thermal Effects on the Conical-Cylindrical Bearing with 2-D and 3-D Energy Equations

This study analyzes the thermal effects of conical-cylindrical hydrobearing performance parameters by via two-dimensional (2-D) and three-dimensional (3-D) energy equations. Eccentricity, misalignment and thermal effects, including isothermal, adiabatic and thermohydrodynamic temperature boundary conditions are considered herein. The calculational results reveal that, at the lower piston rod speed (ub ≤ 4 m/s), the difference of bearing performance parameters between 2-D and 3-D energy equations was not significant. Also, at the high values of piston rod speed (ub = 10 m/s), eccentricity ratio ([ebar] = 0.6) or misalignment factor (σ1 = 0.6), the difference of bearing performance parameters between 2-D and 3-D energy equations is within approximately 1.2 %.