Abstract
At present, the thermal analysis of oil-air-lubricated angular-contact ball bearings uses empirical heat transfer coefficients to calculate heat transfer. This approach presents problems such as simulating the actual lubrication flow field and ignoring the internal heat conduction in the bearing ring. This paper proposes a CFD steady-state analysis model of oil-air-lubricated angular-contact ball bearings based on fluid-solid conjugate heat transfer to analyze the flow field and temperature field. A temperature rise test of oil-air-lubricated angular-contact ball bearings was carried out to verify the positive determination of the simulation analysis results. Based on a fluid-solid conjugate heat transfer steady-state analysis model, the effects of lubrication parameters, operating conditions, and rolling element materials on the temperature rise characteristics of oil-air-lubricated angular-contact ball bearings were studied. The research results provide a method for analyzing the temperature rise characteristics of oil-lubricated bearings and provide a basis for the analysis of oil-lubricated bearing life.
Highlights
Rolling bearings are the key components in mechanical transmission systems that support rotating parts, bear loads, and reduce frictional losses
Some features of oil-air lubrication technology, such as precise control of the oil-air parameters, high lubrication and cooling efficiency, and low fuel consumption, give it advantages that significantly reduce the increase in bearing temperature.[1]
Considering the above factors, this paper proposes a computational fluid dynamics (CFD) steady-state analysis model for oil-air-lubricated angular-contact ball bearings based on fluid-solid conjugate heat transfer
Summary
Rolling bearings are the key components in mechanical transmission systems that support rotating parts, bear loads, and reduce frictional losses.
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