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Fundamentals of Rotating Machinery Diagnostics

By
Donald E. Bently
Donald E. Bently
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Charles T. Hatch
Charles T. Hatch
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Bob Grissom
Bob Grissom
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ISBN:
9780971408104
No. of Pages:
756
Publisher:
ASME Press
Publication date:
2002

Fluid-induced instability is a condition that is caused by rotor interaction with a surrounding fluid. It can produce large amplitude, usually subsynchronous, self-excited vibration of a rotor, leading to rotor-to-stator rubs on seals, bearings, impellers, or other rotor parts. The vibration can also produce significant alternating stresses in the rotor, leading to fatigue failure. Because it is so potentially damaging, fluid-induced instability should be eliminated and avoided.

The Cause of Fluid-Induced Instability
Modes of Instability: Whirl and Whip
Symptoms of Fluid-Induced Instability
Other Malfunctions That Can Produce Similar Symptoms
Locating the Source of Instability
Eliminating Fluid-Induced Instability
Summary
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