%0 Journal Article
%T Numerical study of a hydrodynamic journal bearing with herringbone grooves for oil leakage reduction
%A Chieh-Lin He
%A Chin-Cheng Wang
%J Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology
%@ 2041-305X
%D 2019
%R 10.1177/1350650118785660
%X Hydrodynamic journal bearings and herringbone-grooved journal bearings were numerically analyzed using finite volume-based computational fluid dynamics software. Navier¨CStokes equations were solved to describe pressure and velocity distributions in three dimensions. Values of the Sommerfeld number were calculated as a benchmark case for a hydrodynamic journal bearing. The predicted values of the Sommerfeld number are comparable to theoretical results from engineering tribology literature. For a hydrodynamic journal bearing, it is found that there is a positive correlation between the maximum pressure and the eccentricity ratio. For a hydrodynamic herringbone-grooved journal bearing, the peak pressures are found to occur at the tips of the grooves. It is further found that a herringbone-grooved design can reduce average axial velocity at the outlet by 84%, compared to a hydrodynamic journal bearing without eccentricity. This design could also address the oil leakage issue occurring often in hydrodynamic bearings. These findings may be useful for oil leakage reduction in a hydrodynamic herringbone-grooved journal bearing design
%K Hydrodynamic journal bearing
%K herringbone-grooved
%K oil leakage
%K eccentricity ratio
%U https://journals.sagepub.com/doi/full/10.1177/1350650118785660