Thermo-hydrodynamic analysis of large-eccentricity hydrodynamic bearings with texture on journal surface. (October 2018)

• Record Type: Journal Article
• Authors: Wang, Lin; Han, Zhanhai; Chen, Guoding; Su, Hua
• Is Part Of: Proceedings of the Institution of Mechanical Engineers. Volume 232:Number 19(2018)
• Page Start: 3564
• Page End: 3569
• Publication Date: 2018-10
• Subjects: Hydrodynamic journal bearing -- surface texture -- thermo-hydrodynamic analysis -- large eccentricity -- computational fluid dynamics; Mechanical engineering -- Periodicals; 621.05
• DOI: 10.1177/0954406217739646
• Languages: English
• ISSNs: 0954-4062

Abstract

To improve the performance of a heavy-loaded and high-speed hydrodynamic bearing, partial texture is designed on the journal surface. A three-dimensional thermo-hydrodynamic analysis model is developed based on the computational fluid dynamics method. Thermal conduction of bearing bush and journal, heat convection on the air-bearing surface, viscosity–temperature effect, and cavitation effect are taken into account. Performance of textured and un-textured high-speed journal bearing under different eccentricity ratios and different external loads is compared. The results indicated that partial texture on journal surface can play a positive role for large eccentricity ratio conditions in this study, and the textured bearing has a higher load carrying capacity, a lower maximum oil pressure, and a lower oil temperature rise than the un-textured bearing based on an optimal design of texture.