Numerical Study and Optimization of Hydrodynamic Herringbone Grooved Journal Bearing

Abstract

The non-linear Reynolds equation for herringbone grooved journal bearing (HJB) has been developed and numerically solved for the pressure profile distribution, film thickness, LCC, and power loss using the FDM discretization method and SOR algorithm. Further, the stiffness and damping coefficient of the bearing has been determined by using the perturbation method. The static and dynamic characteristics of HJB are enhanced with the different texture parameters at different eccentricity ratio, and speed. Therefore, an optimization approach is now necessary to control such bearing parameters at which HJB’s real-time performances are improved. Keeping an eye on this, GRA -based statistical tool has been integrated to optimize the bearing characteristics for maximization of the static and dynamic coefficient of the HJBs. The outcome of this paper highlights the importance of numerical methodology, optimization, and parametric analysis for the successful design of HJBs.