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Variation of lubricant distribution across the radial direction in a journal bearing


 A Computational Fluid Dynamics (CFD) analysis of two-phase flow was used to obtain the distribution of lubricant in a journal bearing, including inlet tube and groove. It was found that for an incomplete starting film, the oil spread-length varies along the groove depth and film thickness. The magnitude of variation was found to be independent of the inlet mass flow rate. Numerical simulations of the proposed model show that in the cavitation region the streamlets do not fill the entire film thickness. The present numerical model agrees with experimental observations.