Analysis of magnetohydrodynamic partial slip laser bump texture slider and journal bearing

Abstract

A model of magnetohydrodynamic partial slip laser texture bearing (slider and journal) is developed. The influence of laser bump texture and slip laser texture partial configuration on the magnetohydrodynamic performance analysis of bearing is presented. An electrically conducting fluid is confined to bearing surfaces under uniform magnetic field perpendicular to slider bearing and inclined to the line of maximum film thickness to journal bearing. A one-dimensional analysis based on the narrow groove theory is considered to evaluate the nondimensional pressure distribution in bearing. Results of the nondimensional load capacity and coefficient of friction of magnetohydrodynamic partial laser bump texture and partial slip laser texture bearing configurations are analyzed. Partial slip configuration under MHD lubrication without laser bump texture brings in the performance improvement.

Influence of the Impeller/Guide Vane Clearance Ratio on the Performances of a Nuclear Reactor Coolant Pump

“…The supports at the two radial bearings are elastic supports that meet the actual situation. The calculation of bearing stiffness and damping coefficient adopt narrow bearing theory and Gampbell boundary conditions [24,25].…”

Non-Newtonian couple stress lubrication of MHD elastic journal bearings

“…(Yamasaki and Shioda, 1977;Rosa et al, 1991;Jang and Lee, 2000). MHD bearings significantly rises load-carrying capacity comparing to conventional bearings (Maki et al, 1966;Fathima et al, 2015;Naduvinamani et al, 2017;Rao et al, 2019;Mouda et al, 2019;Hanumagowda et al, 2020).…”

Investigation of the Tribological Performance of Heterogeneous Slip/No-Slip Journal Bearing Considering Thermo-Hydrodynamic Effects

“…Later, Susilowati et al [21] revealed that the combined techniques of texture and slip have a significant influence on the enhancement of the tribological performance of a bearing. Subsequently, Rao et al [15,[22][23][24] have investigated the beneficial effects and potential of partial slip-texture on the enhancement of the load support, the friction coefficient and the stability of the bearing, either Newtonian or Non-Newtonian lubricated. The same authors also showed that heterogeneous slip/no-slip pattern is superior to textured-slip pattern in terms of the load support and friction coefficient in the case of micro-polar and power-law fluid lubricated journal bearings [22] and the case of magnetohydrodynamic lubrication [24].…”

“…Subsequently, Rao et al [15,[22][23][24] have investigated the beneficial effects and potential of partial slip-texture on the enhancement of the load support, the friction coefficient and the stability of the bearing, either Newtonian or Non-Newtonian lubricated. The same authors also showed that heterogeneous slip/no-slip pattern is superior to textured-slip pattern in terms of the load support and friction coefficient in the case of micro-polar and power-law fluid lubricated journal bearings [22] and the case of magnetohydrodynamic lubrication [24]. In these studies, however, the non-mass conserving cavitation algorithm has been employed and the results were questionable, as first investigated by Ausas et al [25].…”