Now showing items 1-20 of 229

    • Lea, Fred (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries; Texas A & M University. Libraries, 2020)
      Sometimes when tasked with an effort that has been done many times before, the same path is followed over an over again. Sometimes the saying “Just because we have always done it that way, doesn’t mean it’s right” is very ...
    • Schmidt, John M. (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries; Texas A & M University. Libraries, 2021)
      A bolted raised face Joint (with O-ring gasket) was failure prone. An axisymmetric FEA (finite element analysis) of the Joint verified why: the flanges were not stiff enough (not thick enough); too much flange rotation ...
    • Strachan, Martin; Severs, Peter; Sharples, Andrew; Woolsey, Clive; Vickers, Tim (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries; Texas A & M University. Libraries, 2020)
      A method has been developed that allows reasonably accurate sectional performance evaluation of sideload compressors based upon only external measurements available from the streams entering and exiting the compressor ...
    • Barbosa, Pedro Henrique de Alameda; Varella Guedes, André; Lima, Leonardo Montiero Barbosa; Freire, Ronaldo Lucas Alkmin (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries; Texas A & M University. Libraries, 2021)
      The purpose of this work is to present the first results of a practical approach developed for measuring the performance on energy and carbon of turbomachinery installed at offshore oil production plants, based on the ...
    • Smith, Patrick J.; Whalen, John; Pavelek, Dustin (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries; Texas A & M University. Libraries, 2021)
      The primary purpose of performing a lateral rotordynamic analysis for centrifugal compressors, steam turbines and other rotating machines is to ensure that there are no undesirable rotor/bearing performance issues that ...
    • Sorokes, James M.; Kuzdzal, Mark J. (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries; Texas A & M University. Libraries, 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, ...
    • Sorokes, James M.; Kuzdzal, Mark J. (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries; Texas A & M University. Libraries, 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, ...
    • Guerra, Christopher; MacWilliams, Scott; Sorokes, James; Lupkes, Kirk (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries; Texas A & M University. Libraries, 2020)
      This paper describes efforts undertaken to increase the use of non-metallic components in research and development as well as component/stage validation testing. The switch to non-metallic or polymer components was driven ...
    • Kerr, Tommy; Rimpel, Aaron; Simons, Sarah (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries; Texas A & M University. Libraries, 2021)
      During commissioning of an open-casing test rig, a loud (above 105 dB) high pitch “squealing” sound occurred at speeds above 3,000 rpm. All elements of the rig were removed except the bearings yet the noise persisted. ...
    • Tirunagari, Prashanthi; Wasser, Jim; Morton, John; Rasmussen, Darin (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries; Texas A & M University. Libraries, 2021)
      Two-thirds of the pipelines in North America are transporting non-crude hydrocarbon products such as NGL, diesel, avaiation fuel, Copyright© 2020 by Turbomachinery Laboratory, Texas A&M Engineering Experiment Station ...
    • Tirunagari, Prashanthi; Rasmussen, Darin; Wasser, Jim; Morton, John (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries; Texas A & M University. Libraries, 2020)
      Three years ago, the Non-Pushing Secondary Seal (NPSS) technology was introduced to the pipeline industry and since then it has successfully addressed challenging pipeline services. Over 300 seals have been installed ...
    • Onari, Maki M. (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries; Texas A & M University. Libraries, 2021)
      A large aero-derivative gas turbine in electrical generation service was exhibiting high vibration at the LP compressor section (1.5 in/s peak) at low load operation. Thorough testing, using Experimental Modal Analysis ...
    • Smith, Thomas; Scott, Shane (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries; Texas A & M University. Libraries, 2020)
      This case study covers the aerodynamic design of a centrifugal compressor that replaced an aging compressor experiencing leakage issues. The replacement compressor was required to reuse the existing rotor, bearings, seals, ...
    • Wu, Tingcheng; Maier, Martin D. (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries; Texas A & M University. Libraries, 2021)
      As speed and power density increase, validation of analytical prediction with actual test data plays an important role to ensure avoidance of critical speeds in high-speed turbomachinery and a reliable design. For a typical ...
    • Marscher, William D. (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries; Texas A & M University. Libraries, 2021)
      This tutorial outlines the basics of pump rotordynamics in a form that is intended to be Machinery End User friendly. Key concepts will be defined in understandable terms, and analysis and testing options will be presented ...
    • Marscher, William (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries; Texas A & M University. Libraries, 2020)
      This tutorial discusses concepts and methods involved in performing and evaluating centrifugal pump rotordynamic analysis. The presentation includes Lomakin Effect, Gyroscopic Effect, Cross-Coupling, Rotordynamic Stability, ...
    • Galloway, Gary; Phillips, Dan (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries; Texas A & M University. Libraries, 2020)
      In order to better control speed of the electric motor-driven ID Fan, the existing fluid coupling was replaced with avariable speed drive, but this led to two failures of the motor shaft and coupling. The drivetrain was ...
    • Patterson, Donnie (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries; Texas A & M University. Libraries, 2020)
      Two stage BB1 style pump. Lean Solutions service in Gas Separation Plant. Operating at 6075 gpm with 1470 ft of head. Running Plan 53C for mechanical seals. Recently rebuilt and new seals installed
    • Wang, Qingyu; Pettinato, Brian C. (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries; Texas A & M University. Libraries, 2020)
      Multistage cryogenic pump rotors are vertically oriented and supported radially by three bearings. However, while the rotors are oriented vertically and supported in three planes, they are balanced horizontally in two-plane ...
    • Soni, Chetan (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries; Texas A & M University. Libraries, 2020)
      This presentation explores common problems with pumps and pump stations, issues with pump intake hydraulics, HI standards, physical modeling – key considerations and presents the case study of Dallas Elm Fork WTP Pump Station 1.