Effect of turbulence on the performance of an inverted three- lobe Pressure dam bearing
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| Author(s) |
|N. K. Batra, Gian Bhushan and N. P. Mehta|
| KEYWORDS |
Inverted three- lobe pressure dam bearing, finite element method, multi-lobes
This paper analyzes the effect of turbulence on the performance of an inverted three- lobe pressure dam bearing which is produced by incorporating a pressure dam in the upper lobe and two relief tracks in the lower two lobes of an ordinary inverted three- lobe bearing. For analysis purpose different values (0, 1500, 3000, and 6000) of Reynolds number are considered to study the effect of turbulence. The results shows that for an inverted three lobe bearing supporting rigid or flexible rotors, the zone of infinite stability as well as minimum threshold speed increases with increase in turbulence, thus indicating better stability at higher turbulence level.
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