The Experts below are selected from a list of 13971 Experts worldwide ranked by ideXlab platform
M Sahu - One of the best experts on this subject based on the ideXlab platform.
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steady state thermo hydrodynamic analysis of cylindrical fluid film journal bearing with an axial groove
Tribology International, 2008Co-Authors: Uaday Singh, L Roy, M SahuAbstract:A steady-state thermohydrodynamic analysis of an axial groove journal bearings in which oil is supplied at constant pressure is performed theoretically. Thermohydrodynamic analysis requires simultaneous solution of Reynolds equation, energy equation and heat conduction equations in the bush and the shaft. From parametric study it is found that the temperature of the fluid film raises due to Frictional heat thereby viscosity, load capacity decreases. Increased shaft speed resulted in increased load carrying capacity, bush temperature, flow rate and Friction Variable. It is difficult to obtain the solution due to numerical instability when the bearing is operated at high eccentricity ratios.
S K Kakoty - One of the best experts on this subject based on the ideXlab platform.
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groove location for optimum performance of three and four lobe bearings using genetic algorithm
Proceedings of the Institution of Mechanical Engineers Part J: Journal of Engineering Tribology, 2015Co-Authors: Lintu Roy, S K KakotyAbstract:This paper presents the various arrangements of grooving location of three- and four-lobe oil journal bearing for optimum performance. An attempt has been made to find out the effect of different configurations of three- and four-lobe oil journal bearing by changing groove locations. The Reynolds equation is solved numerically in a finite difference grid satisfying the appropriate boundary conditions. Determination of optimum performance is based on maximization of non-dimensional load, flow coefficient and mass parameter and minimization of Friction Variable using genetic algorithm. The optimum groove locations arrived at are not at symmetrical position, which is the current practice. The present analysis is carried out and results are obtained for ellipticity ratio equal to 0.5.
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optimum groove location of hydrodynamic journal bearing using genetic algorithm
Advances in Tribology, 2013Co-Authors: Lintu Roy, S K KakotyAbstract:This paper presents the various arrangements of grooving location of two-groove oil journal bearing for optimum performance. An attempt has been made to find out the effect of different configurations of two groove oil journal bearing by changing groove locations. Various groove angles that have been considered are 10°, 20°, and 30°. The Reynolds equation is solved numerically in a finite difference grid satisfying the appropriate boundary conditions. Determination of optimum performance is based on maximization of nondimensional load, flow coefficient, and mass parameter and minimization of Friction Variable using genetic algorithm. The results using genetic algorithm are compared with sequential quadratic programming (SQP). The two grooved bearings in general have grooves placed at diametrically opposite directions. However, the optimum groove locations, arrived at in the present work, are not diametrically opposite.
Uaday Singh - One of the best experts on this subject based on the ideXlab platform.
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steady state thermo hydrodynamic analysis of cylindrical fluid film journal bearing with an axial groove
Tribology International, 2008Co-Authors: Uaday Singh, L Roy, M SahuAbstract:A steady-state thermohydrodynamic analysis of an axial groove journal bearings in which oil is supplied at constant pressure is performed theoretically. Thermohydrodynamic analysis requires simultaneous solution of Reynolds equation, energy equation and heat conduction equations in the bush and the shaft. From parametric study it is found that the temperature of the fluid film raises due to Frictional heat thereby viscosity, load capacity decreases. Increased shaft speed resulted in increased load carrying capacity, bush temperature, flow rate and Friction Variable. It is difficult to obtain the solution due to numerical instability when the bearing is operated at high eccentricity ratios.
Lintu Roy - One of the best experts on this subject based on the ideXlab platform.
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groove location for optimum performance of three and four lobe bearings using genetic algorithm
Proceedings of the Institution of Mechanical Engineers Part J: Journal of Engineering Tribology, 2015Co-Authors: Lintu Roy, S K KakotyAbstract:This paper presents the various arrangements of grooving location of three- and four-lobe oil journal bearing for optimum performance. An attempt has been made to find out the effect of different configurations of three- and four-lobe oil journal bearing by changing groove locations. The Reynolds equation is solved numerically in a finite difference grid satisfying the appropriate boundary conditions. Determination of optimum performance is based on maximization of non-dimensional load, flow coefficient and mass parameter and minimization of Friction Variable using genetic algorithm. The optimum groove locations arrived at are not at symmetrical position, which is the current practice. The present analysis is carried out and results are obtained for ellipticity ratio equal to 0.5.
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optimum groove location of hydrodynamic journal bearing using genetic algorithm
Advances in Tribology, 2013Co-Authors: Lintu Roy, S K KakotyAbstract:This paper presents the various arrangements of grooving location of two-groove oil journal bearing for optimum performance. An attempt has been made to find out the effect of different configurations of two groove oil journal bearing by changing groove locations. Various groove angles that have been considered are 10°, 20°, and 30°. The Reynolds equation is solved numerically in a finite difference grid satisfying the appropriate boundary conditions. Determination of optimum performance is based on maximization of nondimensional load, flow coefficient, and mass parameter and minimization of Friction Variable using genetic algorithm. The results using genetic algorithm are compared with sequential quadratic programming (SQP). The two grooved bearings in general have grooves placed at diametrically opposite directions. However, the optimum groove locations, arrived at in the present work, are not diametrically opposite.
L Roy - One of the best experts on this subject based on the ideXlab platform.
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steady state thermo hydrodynamic analysis of cylindrical fluid film journal bearing with an axial groove
Tribology International, 2008Co-Authors: Uaday Singh, L Roy, M SahuAbstract:A steady-state thermohydrodynamic analysis of an axial groove journal bearings in which oil is supplied at constant pressure is performed theoretically. Thermohydrodynamic analysis requires simultaneous solution of Reynolds equation, energy equation and heat conduction equations in the bush and the shaft. From parametric study it is found that the temperature of the fluid film raises due to Frictional heat thereby viscosity, load capacity decreases. Increased shaft speed resulted in increased load carrying capacity, bush temperature, flow rate and Friction Variable. It is difficult to obtain the solution due to numerical instability when the bearing is operated at high eccentricity ratios.
