e-ISSN 2231-8542
ISSN 1511-3701

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Stability of water lubricated bearing using linear perturbation method under turbulent conditions

R. Mallya, B. S. Shenoy, R. S. Pai and R. Pai

Pertanika Journal of Tropical Agricultural Science, Volume 25, Issue 3, July 2017

Keywords: Axial groove, hydrodynamic pressure, journal bearing, stability, turbulent regime, water lubrication

Published on: 20 Jun 2017

The stability of a bearing is influenced by the turbulent conditions encountered during its operation. In this paper, a linearised perturbation method is used to theoretically investigate the stability of a three-axial groove water lubricated bearing. The stiffness and the damping coefficients are plotted for different eccentricity ratios of the bearing, for groove angles of 36o and 18o. The mass parameter and the whirl ratio, which are a measure of stability, are also plotted against the bearing number for different values of Reynolds number. The bearing shows very good stability at higher eccentricity ratios. The stiffness and damping coefficients as well as the mass parameter increase as the Reynolds number increases. The whirl ratios are unaffected by the change in Reynolds number.

ISSN 1511-3701

e-ISSN 2231-8542

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