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Proceedings Papers

Comparison of Stall Point Predictions in a Transonic Axial Compressor Rotor Using Single Passage and Three Passage CFD Geometries

Benjamin Meinster, Walter C. Smith, Garth V. Hobson, Anthony J. Gannon
Proc. ASME. GT2022, Volume 10C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V10CT32A045, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-83478
https://doi.org/10.1115/GT2022-83478
View Paper titled, Comparison of Stall Point Predictions in a Transonic Axial Compressor Rotor Using Single Passage and Three Passage CFD Geometries
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Topics: Compressors, Computational fluid dynamics, Rotors
Proceedings Papers

Using Blade Surface Heat Transfer for Partial Intercooling and Thrust Augmentation

Anthony J. Gannon, Thomas Morgan, Walter C. Smith, Garth V. Hobson
Proc. ASME. GT2022, Volume 4: Cycle Innovations; Cycle Innovations: Energy Storage, V004T06A026, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-82744
https://doi.org/10.1115/GT2022-82744
View Paper titled, Using Blade Surface Heat Transfer for Partial Intercooling and Thrust Augmentation
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Topics: Blades, Gas turbines, Heat transfer, Thrust, Heat, Compressors, Aircraft, Aviation, Engines, Flow (Dynamics)
Proceedings Papers

Technology Demonstration of a Splittered Transonic Rotor With a Downstream Variable Geometry Tandem Stator

Sabine Bauinger, Anthony J. Gannon, Garth V. Hobson, Aaron D. Terrell
Proc. ASME. GT2017, Volume 2A: Turbomachinery, V02AT39A038, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-64956
https://doi.org/10.1115/GT2017-64956
View Paper titled, Technology Demonstration of a Splittered Transonic Rotor With a Downstream Variable Geometry Tandem Stator
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Topics: Geometry, Rotors, Stators, Blades, Engines, Flow (Dynamics), Compressors, High pressure (Physics), Inlet guide vanes, Machinery
Proceedings Papers

Design and Test of a Transonic Axial Splittered Rotor

Garth V. Hobson, Anthony J. Gannon, Scott Drayton
Proc. ASME. GT2015, Volume 2B: Turbomachinery, V02BT39A029, June 15–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: GT2015-43005
https://doi.org/10.1115/GT2015-43005
View Paper titled, Design and Test of a Transonic Axial Splittered Rotor
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Topics: Design, Rotors, Blades, Compressors, Flow (Dynamics), Clearances (Engineering), Computer simulation, Computer software, Engines, Gas turbines
Proceedings Papers

Measured Heat Transfer in a Transonic Fan Rig at Casing With Implications on Performance

Mark G. Turner, Ahmed Nemnem, Anthony J. Gannon, Garth V. Hobson, Wolfgang Sanz
Proc. ASME. GT2015, Volume 2A: Turbomachinery, V02AT37A039, June 15–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: GT2015-43482
https://doi.org/10.1115/GT2015-43482
View Paper titled, Measured Heat Transfer in a Transonic Fan Rig at Casing With Implications on Performance
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Topics: Heat transfer, Rotors, Pressure, Temperature, Boundary-value problems, Compressors, Computational fluid dynamics, Exterior walls, Heat, Heat transfer coefficients
Proceedings Papers

Performance of a Splittered Transonic Rotor With Several Tip Clearances

Anthony J. Gannon, Garth V. Hobson, Mark G. Turner, Wolfgang Sanz
Proc. ASME. GT2015, Volume 2A: Turbomachinery, V02AT37A040, June 15–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: GT2015-43799
https://doi.org/10.1115/GT2015-43799
View Paper titled, Performance of a Splittered Transonic Rotor With Several Tip Clearances
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Topics: Rotors, Pressure, Blades, Flow (Dynamics), Geometry, Cavities, Clearances (Engineering), Compressors, Fans, Gas turbines
Proceedings Papers

Laser-Doppler Velocimetry Measurements in a Cascade of Compressor Blades at Stall

Garth V. Hobson, Andrew J. H. Williams, Humberto J. Ganaim Rickel
Proc. ASME. GT1996, Volume 1: Turbomachinery, V001T01A120, June 10–13, 1996
Publisher: American Society of Mechanical Engineers
Paper No: 96-GT-484
https://doi.org/10.1115/96-GT-484
View Paper titled, Laser-Doppler Velocimetry Measurements in a Cascade of Compressor Blades at Stall
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Topics: Blades, Cascades (Fluid dynamics), Compressors, Lasers, Flow (Dynamics), Design, Flow visualization, Bubbles, Chords (Trusses), Diffusion (Physics)
Proceedings Papers

Turbulence Amplification With Incidence at the Leading Edge of a Compressor Cascade

Garth V. Hobson, Bryce E. Wakefield, William B. Roberts
Proc. ASME. GT1996, Volume 1: Turbomachinery, V001T01A103, June 10–13, 1996
Publisher: American Society of Mechanical Engineers
Paper No: 96-GT-409
https://doi.org/10.1115/96-GT-409
View Paper titled, Turbulence Amplification With Incidence at the Leading Edge of a Compressor Cascade
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Topics: Cascades (Fluid dynamics), Compressors, Turbulence, Bubbles, Suction, Blades, Separation (Technology), Airfoils, Diffusion (Physics), Flow (Dynamics)
Proceedings Papers

Sweep in a Transonic Fan Rotor: Part 2 — CFD and Stress Analyses

Hazem F. Abdelhamid, Raymond P. Shreeve, Garth V. Hobson
Proc. ASME. GT1998, Volume 1: Turbomachinery, V001T01A137, June 2–5, 1998
Publisher: American Society of Mechanical Engineers
Paper No: 98-GT-579
https://doi.org/10.1115/98-GT-579
View Paper titled, Sweep in a Transonic Fan Rotor: Part 2 — CFD and Stress Analyses
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Topics: Computational fluid dynamics, Rotors, Stress analysis (Engineering), Geometry, Design, Blades, Finite element analysis, Flow (Dynamics), Manufacturing, Mesh generation
Proceedings Papers

Effect of Reynolds Number on Separation Bubbles on Controlled-Diffusion Compressor Blades in Cascade

Garth V. Hobson, Denis J. Hansen, David G. Schnorenberg, Darren V. Grove
Proc. ASME. GT1998, Volume 1: Turbomachinery, V001T01A097, June 2–5, 1998
Publisher: American Society of Mechanical Engineers
Paper No: 98-GT-422
https://doi.org/10.1115/98-GT-422
View Paper titled, Effect of Reynolds Number on Separation Bubbles on Controlled-Diffusion Compressor Blades in Cascade
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Topics: Blades, Bubbles, Cascades (Fluid dynamics), Compressors, Diffusion (Physics), Reynolds number, Separation (Technology), Chords (Trusses), Flow (Dynamics), Turbulence
Proceedings Papers

Experimental and Numerical Performance Characterization of a Transonic Compressor Rotor Operating Behind an Inlet-Guide Vane With Variable Flap Angles

Garth V. Hobson, Anthony Gannon, Wendell Holmes, Michael McCormick, Vincent Capece
Proc. ASME. GT2014, Volume 2A: Turbomachinery, V02AT37A056, June 16–20, 2014
Publisher: American Society of Mechanical Engineers
Paper No: GT2014-27308
https://doi.org/10.1115/GT2014-27308
View Paper titled, Experimental and Numerical Performance Characterization of a Transonic Compressor Rotor Operating Behind an Inlet-Guide Vane With Variable Flap Angles
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Topics: Compressors, Performance characterization, Rotors, Inlet guide vanes, Design, Resolution (Optics), Rotation, Testing, Turbines
Journal Articles

Investigation and Prediction of Steam-Induced Stall-Margin Reduction in Two Transonic Rotor Fans

Anthony J. Gannon, Garth V. Hobson, Collin R. Hedges, Gregory L. Descovich
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. November 2014, 136(11): 111101.
Paper No: FE-12-1576
https://doi.org/10.1115/1.4028318
Published Online: September 4, 2014
View Article titled, Investigation and Prediction of Steam-Induced Stall-Margin Reduction in Two Transonic Rotor Fans
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Topics: Flow (Dynamics), Rotors, Steam, Compressors, Temperature
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

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
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

Investigation and Prediction of Steam-Induced Stall-Margin Reduction in Two Transonic Rotor Fans

Anthony J. Gannon, Garth V. Hobson, Collin R. Hedges, Gregory L. Descovich
Proc. ASME. GT2012, Volume 8: Turbomachinery, Parts A, B, and C, 2513-2522, June 11–15, 2012
Publisher: American Society of Mechanical Engineers
Paper No: GT2012-68514
https://doi.org/10.1115/GT2012-68514
View Paper titled, Investigation and Prediction of Steam-Induced Stall-Margin Reduction in Two Transonic Rotor Fans
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Topics: Fans, Rotors, Steam, Flow (Dynamics), Compressors, Transients (Dynamics), Aircraft, Design, Engines, Inflow
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

Axial Transonic Rotor and Stage Behavior Near the Stability Limit

Anthony J. Gannon, Garth V. Hobson, William L. Davis
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. January 2012, 134(1): 011009.
https://doi.org/10.1115/1.4003225
Published Online: May 26, 2011
View Article titled, Axial Transonic Rotor and Stage Behavior Near the Stability Limit
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Topics: Rotors, Flow (Dynamics), Signals, Pressure, Stability
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