Volume 62, Issue 10 will be published on 02 December 2020

Journal ID : TRKU-20-06-2020-10821
[This article belongs to Volume - 62, Issue - 06]
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Abstract :

Hydrodynamic journal bearing is one of the simplest types of bearings which faces a problem of high temperature generated with the developed industrial applications. The main goal of the present work is to carry out CFD analysis to study a thin film journal bearing supporting rotating shaft of an electric motor used to drive a cement ball mill considering thermal effect and elastic deformation. Fluid structure interaction FSI technique was used to discuss the effect of different working parameters such as journal speed and clearance ratios on the pressure distribution, temperature distribution, total deformation and the state of stresses induced in bearing. A bearing with its real dimensions has been analysed in the present wok while most previous works done for bearings with hypothetical dimensions. For this purpose, thermoelastohydro dynamic analysis for such bearing was mathematically modelled using CFD technique based on three dimensional Navier Stokes, continuity, and energy equations in fluid film and solid materials. Oil viscosity was considered as a function of pressure and temperature. The governing equations with suitable boundary conditions have been solved using ANSYS FLUENT 19. The results showed that the present CFD model was well validated with that of Amit Chauhan (2014) and the oil film temperature increases by 1% to5% while the maximum oil film pressure decreases by 30% to 50% when the journal speed increases from 490 to 1500 rpm. The bearing liner total deformation decrease by 25.3% to 47.3% when the bearing works at the same range of journal speed

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