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Proceedings Papers

Dynamic Forces From Single Gland Labyrinth Seals: Part I — Ideal and Viscous Decomposition

Knox T. Millsaps, Manuel Martinez-Sanchez
Proc. ASME. GT1993, Volume 3B: General, V03BT16A058, May 24–27, 1993
Publisher: American Society of Mechanical Engineers
Paper No: 93-GT-302
https://doi.org/10.1115/93-GT-302
View Paper titled, Dynamic Forces From Single Gland Labyrinth Seals: Part I — Ideal and Viscous Decomposition
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Topics: Aerodynamics, Algebra, Damping, Fluid-dynamic forces, Friction, Inviscid flow, Kinetic energy, Lumped parameter models, Spin (Aerodynamics), Spinning (Textile)
Proceedings Papers

Dynamic Forces From Single Gland Labyrinth Seals: Part II — Upstream Coupling

Knox T. Millsaps, Manuel Martinez-Sanchez
Proc. ASME. GT1993, Volume 3B: General, V03BT16A078, May 24–27, 1993
Publisher: American Society of Mechanical Engineers
Paper No: 93-GT-322
https://doi.org/10.1115/93-GT-322
View Paper titled, Dynamic Forces From Single Gland Labyrinth Seals: Part II — Upstream Coupling
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Topics: Boundary-value problems, Cavities, Cavity flows, Flow (Dynamics), Lumped parameter models, Pressure
Proceedings Papers

Synchronous Rotor Vibration Driven by Fluid Forces From a Geometrically Imperfect Labyrinth Seal

Knox T. Millsaps, William C. Williston
Proc. ASME. GT1995, Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; IGTI Scholar Award, V005T14A028, June 5–8, 1995
Publisher: American Society of Mechanical Engineers
Paper No: 95-GT-362
https://doi.org/10.1115/95-GT-362
View Paper titled, Synchronous Rotor Vibration Driven by Fluid Forces From a Geometrically Imperfect Labyrinth Seal
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Topics: Fluids, Rotor vibration, Flow (Dynamics), Rotors, Damage, Design, Fluid mechanics, Lumped parameter models, Manufacturing, Pressure
Proceedings Papers

Origin of Split Resonance and Backward Whirl in a Simple Rotor

Knox T. Millsaps, Curtis E. Vejvoda
Proc. ASME. GT1996, Volume 3: Coal, Biomass and Alternative Fuels; Combustion and Fuels; Oil and Gas Applications; Cycle Innovations, V003T07A002, June 10–13, 1996
Publisher: American Society of Mechanical Engineers
Paper No: 96-GT-080
https://doi.org/10.1115/96-GT-080
View Paper titled, Origin of Split Resonance and Backward Whirl in a Simple Rotor
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Topics: Resonance, Rotors, Whirls, Bearings, Damping, Stiffness, Computers, Degrees of freedom, Disks, Gravity (Force)
Proceedings Papers

Reducing Lateral Vibrations of a Rotor Passing Through Critical Speeds by Acceleration Scheduling

Knox T. Millsaps, Gregory L. Reed
Proc. ASME. GT1997, Volume 4: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; IGTI Scholar Award, V004T14A044, June 2–5, 1997
Publisher: American Society of Mechanical Engineers
Paper No: 97-GT-234
https://doi.org/10.1115/97-GT-234
View Paper titled, Reducing Lateral Vibrations of a Rotor Passing Through Critical Speeds by Acceleration Scheduling
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Topics: Rotors, Vibration, Disks, Lumped parameter models
Journal Articles

MEMS-Scale Turbomachinery Based Vacuum Roughing Pump

Anthony J. Gannon, Garth V. Hobson, Michael J. Shea, Christopher S. Clay, Knox T. Millsaps
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. October 2014, 136(10): 101002.
Paper No: TURBO-14-1070
https://doi.org/10.1115/1.4027971
Published Online: July 15, 2014
View Article titled, MEMS-Scale Turbomachinery Based Vacuum Roughing Pump
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Topics: Blades, Boundary-value problems, Flow (Dynamics), Grinding, Microelectromechanical systems, Pressure, Pumps, Rotors, Simulation, Turbomachinery
Proceedings Papers

MEMS-Scale Turbomachinery Based Vacuum Roughing Pump

Anthony J. Gannon, Garth V. Hobson, Michael J. Shea, Christopher S. Clay, Knox T. Millsaps
Proc. ASME. GT2013, Volume 5A: Industrial and Cogeneration; Manufacturing Materials and Metallurgy; Marine; Microturbines, Turbochargers, and Small Turbomachines, V05AT23A024, June 3–7, 2013
Publisher: American Society of Mechanical Engineers
Paper No: GT2013-95885
https://doi.org/10.1115/GT2013-95885
View Paper titled, MEMS-Scale Turbomachinery Based Vacuum Roughing Pump
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Topics: Grinding, Microelectromechanical systems, Pumps, Turbomachinery, Vacuum, Boundary-value problems, Engineering simulation, Simulation, Slip flow, Pressure
Proceedings Papers

Effect of Leading Edge Roughness and Reynolds Number on Compressor Profile Loss

Ju Hyun Im, Ju Hyun Shin, Garth V. Hobson, Seung Jin Song, Knox T. Millsaps
Proc. ASME. GT2013, Volume 6A: Turbomachinery, V06AT35A034, June 3–7, 2013
Publisher: American Society of Mechanical Engineers
Paper No: GT2013-95487
https://doi.org/10.1115/GT2013-95487
View Paper titled, Effect of Leading Edge Roughness and Reynolds Number on Compressor Profile Loss
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Topics: Compressors, Reynolds number, Surface roughness, Blades, Suction, Turbulence, Cascades (Fluid dynamics), Pressure, Separation (Technology), Boundary layer turbulence
Journal Articles

Effects of Reynolds Number and Surface Roughness Magnitude and Location on Compressor Cascade Performance

Seung Chul Back, Garth V. Hobson, Seung Jin Song, Knox T. Millsaps
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. September 2012, 134(5): 051013.
https://doi.org/10.1115/1.4003821
Published Online: May 11, 2012
View Article titled, Effects of Reynolds Number and Surface Roughness Magnitude and Location on Compressor Cascade Performance
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Topics: Blades, Reynolds number, Surface roughness, Pressure, Compressors, Cascades (Fluid dynamics), Suction
Journal Articles

Impact of Nonuniform Leading Edge Coatings on the Aerodynamic Performance of Compressor Airfoils

Michael E. Elmstrom, Knox T. Millsaps, Garth V. Hobson, Jeffrey S. Patterson
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. October 2011, 133(4): 041004.
https://doi.org/10.1115/1.3213550
Published Online: April 19, 2011
View Article titled, Impact of Nonuniform Leading Edge Coatings on the Aerodynamic Performance of Compressor Airfoils
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Topics: Airfoils, Bubbles, Coatings, Compressors, Flow (Dynamics), Mach number, Pressure, Separation (Technology), Turbulence, Coating processes
Proceedings Papers

Effect of Surface Roughness Location and Reynolds Number on Compressor Cascade Performance

Seung Chul Back, Garth V. Hobson, Seung Jin Song, Knox T. Millsaps
Proc. ASME. GT2010, Volume 7: Turbomachinery, Parts A, B, and C, 121-128, June 14–18, 2010
Publisher: American Society of Mechanical Engineers
Paper No: GT2010-22208
https://doi.org/10.1115/GT2010-22208
View Paper titled, Effect of Surface Roughness Location and Reynolds Number on Compressor Cascade Performance
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Topics: Cascades (Fluid dynamics), Compressors, Reynolds number, Surface roughness, Suction, Blades, Pressure, Flow (Dynamics), Probes
Proceedings Papers

Analysis of Stall Precursors and Determination of Optimum Signal Processing Methods for an LM-2500 Gas Turbine

Knox T. Millsaps, Gustave C. Dahl, Daniel E. Caguiat, Jeffrey S. Patterson
Proc. ASME. GT2008, Volume 7: Education; Industrial and Cogeneration; Marine; Oil and Gas Applications, 413-420, June 9–13, 2008
Publisher: American Society of Mechanical Engineers
Paper No: GT2008-50575
https://doi.org/10.1115/GT2008-50575
View Paper titled, Analysis of Stall Precursors and Determination of Optimum Signal Processing Methods for an LM-2500 Gas Turbine
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Topics: Gas turbines, Signal processing, Pressure, Signals, Time series, Waves, Algorithms, Annulus, Compressors, Engines
Proceedings Papers

An Improved Preliminary Design Method for Ejectors

Knox T. Millsaps, John C. Markowicz, Jr.
Proc. ASME. GT2003, Volume 3: Turbo Expo 2003, 455-463, June 16–19, 2003
Publisher: American Society of Mechanical Engineers
Paper No: GT2003-38141
https://doi.org/10.1115/GT2003-38141
View Paper titled, An Improved Preliminary Design Method for Ejectors
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Topics: Design methodology, Ejectors, Flow (Dynamics), Momentum, Design, Nozzles, Shear (Mechanics), Tradeoffs
Proceedings Papers

Detection and Localization of Fouling in a Gas Turbine Compressor From Aerothermodynamic Measurements

Knox T. Millsaps, Jon Baker, Jeffrey S. Patterson
Proc. ASME. GT2004, Volume 5: Turbo Expo 2004, Parts A and B, 1867-1876, June 14–17, 2004
Publisher: American Society of Mechanical Engineers
Paper No: GT2004-54173
https://doi.org/10.1115/GT2004-54173
View Paper titled, Detection and Localization of Fouling in a Gas Turbine Compressor From Aerothermodynamic Measurements
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Topics: Compressors, Gas turbines, Blades, Surface roughness, Flow (Dynamics), Airfoils, Axial flow, Geometry, Pressure
Proceedings Papers

Thermodynamic Analysis of “Inter-Turbine” and “Intra-Turbine” Reheat for Marine Gas Turbines

Knox T. Millsaps, Bruce Rodman
Proc. ASME. GT2004, Volume 5: Turbo Expo 2004, Parts A and B, 1877-1882, June 14–17, 2004
Publisher: American Society of Mechanical Engineers
Paper No: GT2004-54174
https://doi.org/10.1115/GT2004-54174
View Paper titled, Thermodynamic Analysis of “Inter-Turbine” and “Intra-Turbine” Reheat for Marine Gas Turbines
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Topics: Marine gas turbines, Turbines, Cycles, Combustion, Flow (Dynamics), Fuel consumption, Gas turbines, Ocean energy, Power density, Propulsion
Proceedings Papers

Impact of Non-Uniform Leading Edge Coatings on the Aerodynamic Performance of Compressor Airfoils

Michael E. Elmstrom, Knox T. Millsaps, Garth V. Hobson, Jeffrey S. Patterson
Proc. ASME. GT2005, Volume 6: Turbo Expo 2005, Parts A and B, 103-113, June 6–9, 2005
Publisher: American Society of Mechanical Engineers
Paper No: GT2005-68091
https://doi.org/10.1115/GT2005-68091
View Paper titled, Impact of Non-Uniform Leading Edge Coatings on the Aerodynamic Performance of Compressor Airfoils
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Topics: Airfoils, Coatings, Compressors, Computational fluid dynamics, Mach number, Turbulence, Bubbles, Cascades (Fluid dynamics), Chords (Trusses), Pressure