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Proc. ASME. GT1998, Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education, V005T15A023, June 2–5, 1998

Paper No: 98-GT-264

DOI: https://doi.org/10.1115/98-GT-264

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Topics: Axial flow, Compressors, Control equipment, Dynamics (Mechanics), Ejectors, Feedback, Flow (Dynamics), NASA, Rotors, Testing

Proceedings Papers

Rotating Stall Control in a High-Speed Stage With Inlet Distortion: Part II — Circumferential Distortion

Z. S. Spakovszky, C. M. van Schalkwyk, H. J. Weigl, J. D. Paduano, K. L. Suder, M. M. Bright

Proc. ASME. GT1998, Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education, V005T15A024, June 2–5, 1998

Paper No: 98-GT-265

DOI: https://doi.org/10.1115/98-GT-265

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Topics: Axial flow, Compressors, Control equipment, Ejectors, Engineering design processes, Feedback, Flow (Dynamics), NASA, Pressure, Testing

Proceedings Papers

Influence of Compressor Deterioration on Engine Dynamic Behavior and Transient Stall-Margin

Z. S. Spakovszky, J. B. Gertz, O. P. Sharma, J. D. Paduano, A. H. Epstein, E. M. Greitzer

Proc. ASME. GT1999, Volume 1: Aircraft Engine; Marine; Turbomachinery; Microturbines and Small Turbomachinery, V001T03A066, June 7–10, 1999

Paper No: 99-GT-439

DOI: https://doi.org/10.1115/99-GT-439

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Topics: Compressors, Engines, Transients (Dynamics), Signals, Rotors, Stability, Aircraft engines, Clearances (Engineering), Flow (Dynamics), Pressure

Proceedings Papers

Tip-Clearance Actuation With Magnetic Bearings for High-Speed Compressor Stall Control

Z. S. Spakovszky, J. D. Paduano, R. Larsonneur, A. Traxler, M. M. Bright

Proc. ASME. GT2000, Volume 1: Aircraft Engine; Marine; Turbomachinery; Microturbines and Small Turbomachinery, V001T03A092, May 8–11, 2000

Paper No: 2000-GT-0528

DOI: https://doi.org/10.1115/2000-GT-0528

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Topics: Clearances (Engineering), Compressors, Magnetic bearings, Actuators, Design, Servomechanisms, Aircraft engines, Computational fluid dynamics, Control equipment, Flow (Dynamics)

Proceedings Papers

Unsteady Flow and Whirl-Inducing Forces in Axial-Flow Compressors: Part II — Analysis

F. F. Ehrich, Z. S. Spakovszky, M. Martinez-Sanchez, S. J. Song, D. C. Wisler, A. F. Storace, H.-W. Shin, B. F. Beacher

Proc. ASME. GT2000, Volume 4: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education, V004T03A074, May 8–11, 2000

Paper No: 2000-GT-0566

DOI: https://doi.org/10.1115/2000-GT-0566

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Topics: Axial flow, Compressors, Unsteady flow, Whirls, Rotors, Turbomachinery, Actuators, Design, Disks, Displacement

Proceedings Papers

Analysis of Aerodynamically Induced Whirling Forces in Axial Flow Compressors

Z. S. Spakovszky

Proc. ASME. GT2000, Volume 4: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education, V004T03A060, May 8–11, 2000

Paper No: 2000-GT-0418

DOI: https://doi.org/10.1115/2000-GT-0418

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Topics: Axial flow, Compressors, Whirls, Blades, Clearances (Engineering), Pressure, Aerodynamics, Dynamic systems, Engine design, Flow (Dynamics)

Proceedings Papers

Unsteady Flow and Whirl-Inducing Forces in Axial-Flow Compressors: Part I — Experiment

A. F. Storace, D. C. Wisler, H.-W. Shin, B. F. Beacher, F. F. Ehrich, Z. S. Spakovszky, M. Martinez-Sanchez, S. J. Song

Proc. ASME. GT2000, Volume 4: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education, V004T03A073, May 8–11, 2000

Paper No: 2000-GT-0565

DOI: https://doi.org/10.1115/2000-GT-0565

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Topics: Axial flow, Compressors, Unsteady flow, Whirls, Rotors, Design, Turbomachinery, Aerodynamics, Engines, Fluid-dynamic forces

Proceedings Papers

Foil Bearing Design Guidelines for Improved Stability

J. Schiffmann, Z. S. Spakovszky

Proc. ASME. IDETC-CIE2012, Volume 1: 24th Conference on Mechanical Vibration and Noise, Parts A and B, 701-713, August 12–15, 2012

Paper No: DETC2012-70899

DOI: https://doi.org/10.1115/DETC2012-70899

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Topics: Design, Foil bearings, Stability, Rotors, Bearings, Fluid films, Vibration, Compressibility, Damping, Pressure

Proceedings Papers

Origins and Structure of Spike-Type Rotating Stall

G. Pullan, A. M. Young, I. J. Day, E. M. Greitzer, Z. S. Spakovszky

Proc. ASME. GT2012, Volume 8: Turbomachinery, Parts A, B, and C, 2567-2579, June 11–15, 2012

Paper No: GT2012-68707

DOI: https://doi.org/10.1115/GT2012-68707

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Topics: Blades, Clearances (Engineering), Compressors, Computer simulation, Engineering simulation, Flow separation, Pressure, Rotors, Separation (Technology), Simulation

Proceedings Papers

Effects of Boundary Layer Ingestion on the Aero-Acoustics of Transonic Fan Rotors

J. J. Defoe, Z. S. Spakovszky

Proc. ASME. GT2012, Volume 8: Turbomachinery, Parts A, B, and C, 1725-1734, June 11–15, 2012

Paper No: GT2012-68503

DOI: https://doi.org/10.1115/GT2012-68503

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Topics: Acoustics, Boundary layers, Rotors, Vortices, Noise (Sound), Shock (Mechanics), Flow (Dynamics), Blades, Rotation, Swirling flow

Journal Articles

Foil Bearing Design Guidelines for Improved Stability

J. Schiffmann, Z. S. Spakovszky

J. Tribol. January 2013, 135(1): 011103.

Paper No: TRIB-12-1022

DOI: https://doi.org/10.1115/1.4007759

Published Online: December 20, 2012

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Topics: Bearings, Damping, Design, Foil bearings, Rotors, Stability, Stress, Whirls, Compressibility

Proceedings Papers

Shock Propagation and MPT Noise From a Transonic Rotor in Non-Uniform Flow

J. J. Defoe, Z. S. Spakovszky

Proc. ASME. GT2011, Volume 7: Turbomachinery, Parts A, B, and C, 1011-1022, June 6–10, 2011

Paper No: GT2011-45645

DOI: https://doi.org/10.1115/GT2011-45645

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Topics: Flow (Dynamics), Noise (Sound), Rotors, Shock (Mechanics), Acoustics, Blades, Computation, Ducts, Inflow, NASA

Proceedings Papers

An Investigation of Stall Inception in Centrifugal Compressor Vaned Diffusers

J. N. Everitt, Z. S. Spakovszky

Proc. ASME. GT2011, Volume 7: Turbomachinery, Parts A, B, and C, 1737-1749, June 6–10, 2011

Paper No: GT2011-46332

DOI: https://doi.org/10.1115/GT2011-46332

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Topics: Compressors, Diffusers, Stall inception, Flow (Dynamics), Simulation, Wavelength, Impellers, Leakage flows, Blades, Machinery

Journal Articles

A Novel Turbomachinery Air-Brake Concept for Quiet Aircraft

P. N. Shah, D. D. Mobed, Z. S. Spakovszky

J. Turbomach. October 2010, 132(4): 041002.

DOI: https://doi.org/10.1115/1.3192145

Published Online: April 26, 2010

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Topics: Acoustics, Aircraft, Brakes, Design, Drag (Fluid dynamics), Ducts, Flow (Dynamics), Noise (Sound), Pressure, Swirling flow

Journal Articles

High-Speed Operation of a Gas-Bearing Supported MEMS-Air Turbine

C. J. Teo, L. X. Liu, H. Q. Li, L. C. Ho, S. A. Jacobson, F. F. Ehrich, A. H. Epstein, Z. S. Spakovszky

J. Tribol. July 2009, 131(3): 032001.

DOI: https://doi.org/10.1115/1.3123343

Published Online: May 27, 2009

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Topics: Bearings, Journal bearings, Rotors, Turbines, Gas bearings, Anisotropy, Flow (Dynamics), Microelectromechanical systems, Whirls, Thrust bearings

Journal Articles

Spike and Modal Stall Inception in an Advanced Turbocharger Centrifugal Compressor

Z. S. Spakovszky, C. H. Roduner

J. Turbomach. July 2009, 131(3): 031012.

DOI: https://doi.org/10.1115/1.2988166

Published Online: April 10, 2009

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Topics: Compressors, Diffusers, Flow (Dynamics), Impellers, Pressure, Turbochargers, Surges, Valves, Waves

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Journal citation

NARROW

Forced Response System Identification of Full Aero-Engine Rotordynamic Systems for Prognostics and Diagnostics

The Role of Tip Leakage Flow in Spike-Type Rotating Stall Inception

The Role of Tip Leakage Flow in Spike-Type Rotating Stall Inception

Origins and Structure of Spike-Type Rotating Stall

Rotating Stall Control in a High-Speed Stage With Inlet Distortion: Part I — Radial Distortion

Rotating Stall Control in a High-Speed Stage With Inlet Distortion: Part II — Circumferential Distortion

Influence of Compressor Deterioration on Engine Dynamic Behavior and Transient Stall-Margin

Tip-Clearance Actuation With Magnetic Bearings for High-Speed Compressor Stall Control

Unsteady Flow and Whirl-Inducing Forces in Axial-Flow Compressors: Part II — Analysis

Analysis of Aerodynamically Induced Whirling Forces in Axial Flow Compressors

Unsteady Flow and Whirl-Inducing Forces in Axial-Flow Compressors: Part I — Experiment

Foil Bearing Design Guidelines for Improved Stability

Origins and Structure of Spike-Type Rotating Stall

Effects of Boundary Layer Ingestion on the Aero-Acoustics of Transonic Fan Rotors

Foil Bearing Design Guidelines for Improved Stability

Shock Propagation and MPT Noise From a Transonic Rotor in Non-Uniform Flow

An Investigation of Stall Inception in Centrifugal Compressor Vaned Diffusers

A Novel Turbomachinery Air-Brake Concept for Quiet Aircraft

High-Speed Operation of a Gas-Bearing Supported MEMS-Air Turbine

Spike and Modal Stall Inception in an Advanced Turbocharger Centrifugal Compressor

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