Abstract
A steady-state performance analysis of two-lobe oil journal bearing has been carried out in this paper. A computer program has been prepared to calculate the steady-state hydrodynamic characteristics. To study the steady-state characteristics of two-lobe bearing, the nondimensional Reynolds’ equation is solved to obtain nondimensional values of load-carrying capacity, flow rate, attitude angle, and friction variable. Parameters of the design are studied for different groove configurations and an optimized groove location is obtained for two-lobe bearing is obtained using genetic algorithm. It has been found that placing the groove on different locations have greater influence on the design parameters such as the nondimensional oil flow rate, frictional variable, and nondimensional load-carrying capacity. From numerical simulation of two-lobe bearing, it has been found that in case of this bearing parameters shows optimum values when the grooves are arranged below the horizontal axis. There is an improvement in nondimensional values of friction variable, nondimensional flow rate, and nondimensional load-carrying capacity at optimum location of the groove. The analysis is carried out for an ellipticity ratio of 0.5 and the results obtained have been reported.
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