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High Performance Bearing Comparison
(Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2015)
With the increasing demand for high performance gearboxes, larger, faster, more highly loaded bearings are requiring more oil and creating more heat than ever before. This means the lubrication systems must be larger to ...
A Novel Method for Measurement and Evaluation of Torsional Damping for Geared Turbomachinery During Operation Using Lateral Vibration Probes
(Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2015)
Measurement of the modal parameters of rotors is of interest to understand the dynamics of rotating systems, validate design models, and assess how operational parameters affect the vibration response. Torsional vibratory ...
Operational modal analysis application for the measure of logarithm decrement in centrifugal compressor
(Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2015)
The results of a stability test on a centrifugal compressor during the full load test of the entire compression train are presented. A Magnetic Exciter was installed at the shaft end in order to excite the first lateral ...
Measured Effects Of Liquid Distribution On Compressor Performance During Wet Gas Ingestion
(Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2015)
Upstream production of natural gas is commonly a mixture of both liquid and gas hydrocarbons that is separated before boosting the gas or liquid flows to higher pressure for transport. The gas-liquid mixture is known to ...
Practical Guidelines For Oil & Gas Plant Design Against Sub-Synchronous Torsional Interaction Phenomena
(Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2015)
Variable Frequency Drives (VFDs) are widely used in the Oil&Gas industry to enable variable speed operation of motors. These drives use power electronic devices, which produce current and voltage harmonic distortion. They ...
Numerical Prediction And Experimental Validation Of Rotor Thermal Instability
(Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2015)
The increasing demand of higher efficiency and increased equipment compactness is pushing the modern rotordynamic design towards higher and higher bearing peripheral speeds. Due to the increased viscous dissipation, fluid ...
Coupled Torsional and Lateral Analysis for the Determination of the Damping of the First Torsional Mode of Synchronous Motor Driven Compressor Trains
(Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2015)
This paper deals with the damping ratio D of the 1st torsional mode of synchronous motor driven compressor trains. The damping ratio is a crucial parameter for the torsional start-up analysis and for the lifetime calculation ...
Applying CFD to Solve a Vibration Problem of a Compressor
(Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2015)
This paper presents an application of CFD on solving a compressor vibration problem. The numerical technique was used to calculate the dynamical coefficients of a damper seal with a hybrid hole-pattern - labyrinth ...
Axial Thrust in High Pressure Centrifugal Compressors: Description of a Calculation Model Validated by Experimental Data from Full Load Test
(Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2015)
The residual axial thrust acting on the rotor of a centrifugal compressor is the result of the non-uniform pressure distribution on the surfaces in contact with the process gas, plus the differential pressure acting on the ...
A New Equation, Using "Velocity of Sound" & "Poisson's Ratio" in the Material of Construction, Gives Quick & Remarkably Accurate Prediction Of the New Natural Frequency for Each Mode Shape of Vibration of Machinery, Components & Structures When Material & Size Are Changed
(Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2015)