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Proc. ASME. GT2018, Volume 6: Ceramics; Controls, Diagnostics, and Instrumentation; Education; Manufacturing Materials and Metallurgy, V006T24A008, June 11–15, 2018

Paper No: GT2018-75430

DOI: https://doi.org/10.1115/GT2018-75430

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Topics: Additive manufacturing, Flow control, Mechanical properties, Turbomachinery, Stress, Fatigue life, ASTM International, Fatigue properties, Tension, Extruding

Journal Articles

Complex Flow Generation and Development in a Full-Scale Turbofan Inlet

Tamara Guimarães, K. Todd Lowe, Walter F. O'Brien

J. Eng. Gas Turbines Power. August 2018, 140(8): 082606.

Paper No: GTP-17-1545

DOI: https://doi.org/10.1115/1.4039179

Published Online: May 14, 2018

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Topics: Engines, Flow (Dynamics), Turbulence, Turbofans, Vortices, Aircraft, Stress

Journal Articles

Experimental Quantification of Fan Rotor Effects on Inlet Swirl Using Swirl Distortion Descriptors

Dustin J. Frohnapfel, K. Todd Lowe, Walter F. O'Brien

J. Eng. Gas Turbines Power. August 2018, 140(8): 082603.

Paper No: GTP-17-1631

DOI: https://doi.org/10.1115/1.4039425

Published Online: May 3, 2018

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Topics: Engines, Flow (Dynamics), Rotors, Vortices, Design, Turbofans

Proceedings Papers

Complex Flow Generation and Development in a Full-Scale Turbofan Inlet

Tamara Guimarães, K. Todd Lowe, Walter F. O’Brien

Proc. ASME. GT2017, Volume 2B: Turbomachinery, V02BT42A012, June 26–30, 2017

Paper No: GT2017-64756

DOI: https://doi.org/10.1115/GT2017-64756

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Topics: Flow (Dynamics), Turbofans, Engines, Vortices, Aircraft, Inflow, Stress, Swirling flow, Turbulence, Aerodynamics

Proceedings Papers

Experimental Quantification of Fan Rotor Effects on Inlet Swirl Using Swirl Distortion Descriptors

Dustin J. Frohnapfel, Walter F. O’Brien, K. Todd Lowe

Proc. ASME. GT2017, Volume 2B: Turbomachinery, V02BT42A013, June 26–30, 2017

Paper No: GT2017-64779

DOI: https://doi.org/10.1115/GT2017-64779

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Topics: Rotors, Engines, Flow (Dynamics), Design, Turbofans, Aircraft, Architecture, Generators

Proceedings Papers

Leveraging Correlation to Reduce Uncertainty in Efficiency Measurements for Low Pressure Ratio Fans

Anthony M. Ferrar, William C. Schneck, III, Walter F. O’Brien

Proc. ASME. GT2016, Volume 2A: Turbomachinery, V02AT37A043, June 13–17, 2016

Paper No: GT2016-57718

DOI: https://doi.org/10.1115/GT2016-57718

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Topics: Fans, Pressure, Uncertainty, Errors, Thermocouples, Temperature, Calibration, Data acquisition systems, Experimental design, Measurement uncertainty

Proceedings Papers

A CFD Analysis of the Effects of Two-Phase Flow in a Two-Stage Centrifugal Compressor

Chaitanya V. Halbe, Walter F. O’Brien, William T. Cousins, Vishnu Sishtla

Proc. ASME. GT2015, Volume 2C: Turbomachinery, V02CT42A016, June 15–19, 2015

Paper No: GT2015-42534

DOI: https://doi.org/10.1115/GT2015-42534

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Topics: Compressors, Computational fluid dynamics, Two-phase flow, Drops, Simulation, Dynamics (Mechanics), Heat, Momentum, Pressure

Proceedings Papers

Separated Flow in a Low Speed Two-Dimensional Cascade: Part I — Flow Visualization and Time-Mean Velocity Measurements

Adam M. Yocum, Walter F. O’Brien

Proc. ASME. GT1992, Volume 1: Turbomachinery, V001T01A121, June 1–4, 1992

Paper No: 92-GT-356

DOI: https://doi.org/10.1115/92-GT-356

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Topics: Cascades (Fluid dynamics), Flow (Dynamics), Flow visualization, Velocity measurement, Blades, Geometry, Probes, Separation (Technology), Smoke, Wakes

Proceedings Papers

Separated Flow in a Low Speed Two-Dimensional Cascade: Part II — Cascade Performance

Adam M. Yocum, Walter F. O’Brien

Proc. ASME. GT1992, Volume 1: Turbomachinery, V001T01A122, June 1–4, 1992

Paper No: 92-GT-357

DOI: https://doi.org/10.1115/92-GT-357

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Topics: Cascades (Fluid dynamics), Flow (Dynamics), Blades, Airfoils, Computer simulation, Flat plates, Geometry, Pressure, Pressure measurement, Reynolds number

Proceedings Papers

A Wide-Range Axial-Flow Compressor Stage Performance Model

Gregory S. Bloch, Walter F. O’Brien

Proc. ASME. GT1992, Volume 1: Turbomachinery, V001T01A025, June 1–4, 1992

Paper No: 92-GT-058

DOI: https://doi.org/10.1115/92-GT-058

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Topics: Axial flow, Compressors, Compression, Flow (Dynamics), Aircraft, Arches, Computers, Gas turbines, Steady state

Proceedings Papers

Dynamic Modeling of Starting Aerodynamics and Stage Matching in an Axi-Centrifugal Compressor

Kevin Wilkes, Walter F. O’Brien, A. Karl Owen

Proc. ASME. GT1996, Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; General, V005T16A014, June 10–13, 1996

Paper No: 96-GT-278

DOI: https://doi.org/10.1115/96-GT-278

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Topics: Aerodynamics, Compressors, Dynamic modeling, Simulation, Design, Engines, Flow (Dynamics), Gas turbines, Transients (Dynamics)

Proceedings Papers

Stage-by-Stage Dynamic Compression System Modeling for Split Core and Bypass Systems

Jules W. Lindau, Walter F. O’Brien

Paper No: 96-GT-279

DOI: https://doi.org/10.1115/96-GT-279

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Topics: Compression, Modeling, Flow (Dynamics), Compressors, Simulation, Surges

Proceedings Papers

The Use of Circumferentially Nonuniform Stators to Attenuate LP Compressor Rotor-Stator-Strut Aerodynamic and Mechanical Interactions

Markland G. Jones, Michael T. Barton, Walter F. O’Brien

Proc. ASME. GT1996, Volume 1: Turbomachinery, V001T01A051, June 10–13, 1996

Paper No: 96-GT-154

DOI: https://doi.org/10.1115/96-GT-154

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Topics: Compressors, Rotors, Stators, Struts (Engineering), Pressure, Computers, Engines, Blades, Design, Flow (Dynamics)

Proceedings Papers

A Shock Loss Model for Supersonic Compressor Cascades

Gregory S. Bloch, William W. Copenhaver, Walter F. O’Brien

Proc. ASME. GT1997, Volume 1: Aircraft Engine; Marine; Turbomachinery; Microturbines and Small Turbomachinery, V001T03A065, June 2–5, 1997

Paper No: 97-GT-405

DOI: https://doi.org/10.1115/97-GT-405

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Topics: Compressors, Shock (Mechanics), Mach number, Airfoils, Boundary layers, Cascades (Fluid dynamics), Compression, Flow (Dynamics), Fluid mechanics, Geometry

Proceedings Papers

Effect of BLI–Type Inlet Distortion on Turbofan Engine Performance

James R. Lucas, Walter F. O’Brien, Anthony M. Ferrar

Proc. ASME. GT2014, Volume 1A: Aircraft Engine; Fans and Blowers, V01AT01A037, June 16–20, 2014

Paper No: GT2014-26666

DOI: https://doi.org/10.1115/GT2014-26666

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Topics: Engines, Turbofans, Boundary layers, Flow (Dynamics), Aircraft, Emissions, Entropy, Pressure, Thrust, Wire mesh

Journal Articles

Flow Control Over a Circular Cylinder Using Pulsed Dielectric Barrier Discharge Actuators

William C. Schneck, III, Walter F. O'Brien

J. Turbomach. January 2015, 137(1): 011001.

Paper No: TURBO-14-1127

DOI: https://doi.org/10.1115/1.4028236

Published Online: August 26, 2014

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Topics: Actuators, Flow control, Wakes, Momentum, Flow (Dynamics), Probes, Reynolds number, Cylinders

Proceedings Papers

Flow Control Over a Circular Cylinder Using Pulsed DBD Actuators

William C. Schneck, III, Walter F. O’Brien

Proc. ASME. GT2012, Volume 1: Aircraft Engine; Ceramics; Coal, Biomass and Alternative Fuels; Controls, Diagnostics and Instrumentation, 947-957, June 11–15, 2012

Paper No: GT2012-69993

DOI: https://doi.org/10.1115/GT2012-69993

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Topics: Actuators, Circular cylinders, Flow control, Flow (Dynamics), Reynolds number, Wakes, Plasmas (Ionized gases), Electric fields, Gas turbines, Pressure gradient

Journal citation

NARROW

Development, Analysis, and Validation of a Simultaneous Inlet Total Pressure and Swirl Distortion Generator

Turbofan Nose Cone Interactions With Inlet Swirl

A Numerical Analysis of the Effects of Liquid Carryover on the Performance of a Two-Stage Centrifugal Compressor

Characterizing Static and Dynamic Mechanical Properties for Additive Manufactured ULTEM 9085 Used to Construct Flow Control Devices for Turbomachinery Applications

Complex Flow Generation and Development in a Full-Scale Turbofan Inlet

Experimental Quantification of Fan Rotor Effects on Inlet Swirl Using Swirl Distortion Descriptors

Complex Flow Generation and Development in a Full-Scale Turbofan Inlet

Experimental Quantification of Fan Rotor Effects on Inlet Swirl Using Swirl Distortion Descriptors

Leveraging Correlation to Reduce Uncertainty in Efficiency Measurements for Low Pressure Ratio Fans

A CFD Analysis of the Effects of Two-Phase Flow in a Two-Stage Centrifugal Compressor

Separated Flow in a Low Speed Two-Dimensional Cascade: Part I — Flow Visualization and Time-Mean Velocity Measurements

Separated Flow in a Low Speed Two-Dimensional Cascade: Part II — Cascade Performance

A Wide-Range Axial-Flow Compressor Stage Performance Model

Dynamic Modeling of Starting Aerodynamics and Stage Matching in an Axi-Centrifugal Compressor

Stage-by-Stage Dynamic Compression System Modeling for Split Core and Bypass Systems

The Use of Circumferentially Nonuniform Stators to Attenuate LP Compressor Rotor-Stator-Strut Aerodynamic and Mechanical Interactions

A Shock Loss Model for Supersonic Compressor Cascades

Effect of BLI–Type Inlet Distortion on Turbofan Engine Performance

Flow Control Over a Circular Cylinder Using Pulsed Dielectric Barrier Discharge Actuators

Flow Control Over a Circular Cylinder Using Pulsed DBD Actuators

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