Influence of thermal pressure and temperature profile approximations in thermohydrodynamic analysis of surface-textured noncircular journal bearing

摘要

The present study aims to study the thermo-hydrodynamic performance of noncircular journal bearings lubricated with multigrade oil. Experimental investigations are carried out on phosphorous bronze hydrodynamic journal bearing with a surface textured at different loading conditions with multigrade oil (MAK 2T oil) as lubricant at different constant rota-tional speeds (i.e., 1000-4000 rpm) for studying the dynamic characteristics. The journal-bearing's thermo-dynamic behavior is analyzed by simplifying modified Reynolds and energy equations to obtain surface-textured bearing performance characteristics, such as load-carrying capacity, mass flow rate, and power loss. The noncircular bearings suggest several design para-meters, such as a tilt angle for designers. By considering thermal effects for MAK 2T oil lubricant, the require-ments of a specific application can be fulfilled.