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TL05 - A Resonance Condition Encountered in a Shop Overspeed Machine Due to Inertia Effects--The Theoretical Basis and Practical Experience
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, [2019])
This lecture will discuss the dynamic instability theory and resulting vibration characteristics of a high-speed rotor system when the ratio of the polar moment of inertia and transverse moment of inertia approaches a value ...
A REVIEW OF AERODYNAMICALLY INDUCED FORCES ACTING ON CENTRIFUGAL COMPRESSORS, AND RESULTING VIBRATION CHARACTERISTICS OF ROTORS
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
There are several sources of non-synchronous forced vibration of centrifugal compressor rotors. Many of them are aerodynamic phenomena, created within the gas path of the compressor. Phenomena such as impeller stall, ...
RECENT TEST EXPERIENCES WITH APPLYING MULTIPLE UNSHROUDED IMPELLERS IN A SINGLE-SHAFT COMPRESSOR
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
The use of unshrouded impellers to increase the pressure ratio and volume reduction achieved in low mole weight, single-shaft compressor applications is discussed. The aerodynamic and mechanical implications of using ...
A REVIEW OF AERODYNAMICALLY INDUCED FORCES ACTING ON CENTRIFUGAL COMPRESSORS, AND RESULTING VIBRATION CHARACTERISTICS OF ROTORS
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2020)
There are several sources of non-synchronous forced vibration of centrifugal compressor rotors. Many of them are aerodynamic phenomena, created within the gas path of the compressor. Phenomena such as impeller stall, ...
Rotordynamic Stability Of A Rotor With Three Open Impellers, Validated By Magnetic Bearing Exciter During Full Load Full Pressure (Flfp) Testing
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2022)
As speed and power density increase, open (unshrouded) impellers are becoming more and more utilized in process gas compressors. Open impellers enable higher tip speeds and more aerodynamic head per stage than closed ...