THD effects of static performance characteristics of infinitely wide turbulent journal bearings

Shiuh Hwa Shyu, Fuli Li, Yeau Ren Jeng, Wei Ren Lee, Sheng Jii Hsieh

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


Formulas for static parameters were found for infinitely wide turbulent full journal bearings that correlate either load capacity or friction coefficient for thermohydrodynamics (THD) effects in terms of a single THD parameter. The database was built by numerical simulation of turbulent liquid lubricant flows with various eccentricity ratios in a wide range of the Reynolds number for both isoviscous and THD cases. The least-squares method was applied to the groups of parameters yielding the formulas of load capacity, friction coefficient, and attitude angle. The isoviscous attitude angle was fitted as a function of the maximum-to-minimum film thickness ratio, and the variation of attitude angle due to THD is linearly dependent on the THD-to-isoviscous load capacity ratio. With the formulas provided in this study, designers can quickly determine static parameters of turbulent journal bearings without the burden of labor-intensive numerical computation of the governing differential equations.

Original languageEnglish
Pages (from-to)948-956
Number of pages9
JournalTribology Transactions
Issue number6
Publication statusPublished - 2010 Jan 1

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films


Dive into the research topics of 'THD effects of static performance characteristics of infinitely wide turbulent journal bearings'. Together they form a unique fingerprint.

Cite this