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Patrick B. Lawless
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Proceedings Papers

Smart Structures: Gas Turbine Engine Applications

Sanford Fleeter, Patrick B. Lawless
Proc. ASME. IDETC-CIE2001, Volume 6C: 18th Biennial Conference on Mechanical Vibration and Noise, 3119-3125, September 9–12, 2001
Publisher: American Society of Mechanical Engineers
Paper No: DETC2001/VIB-21748
https://doi.org/10.1115/DETC2001/VIB-21748
View Paper titled, Smart Structures: Gas Turbine Engine Applications
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Topics: Gas turbines, Smart structures, High cycle fatigue, Smart materials, Actuators, Aircraft, Airfoils, Control systems, Damping, Flutter (Aerodynamics)
Proceedings Papers

Rotating Stall Acoustic Signature in a Low Speed Centrifugal Compressor: Part 1 — Vaneless Diffuser

Patrick B. Lawless, Sanford Fleeter
Proc. ASME. GT1993, Volume 3B: General, V03BT16A053, May 24–27, 1993
Publisher: American Society of Mechanical Engineers
Paper No: 93-GT-297
https://doi.org/10.1115/93-GT-297
View Paper titled, Rotating Stall Acoustic Signature in a Low Speed Centrifugal Compressor: Part 1 — Vaneless Diffuser
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Topics: Acoustics, Compressors, Vaneless diffusers, Pressure, Waves, Fourier analysis, Impellers, Microphones, Diffusers, Excitation
Proceedings Papers

Rotating Stall Acoustic Signature in a Low Speed Centrifugal Compressor: Part 2 — Vaned Diffuser

Patrick B. Lawless, Sanford Fleeter
Proc. ASME. GT1993, Volume 3B: General, V03BT16A010, May 24–27, 1993
Publisher: American Society of Mechanical Engineers
Paper No: 93-GT-254
https://doi.org/10.1115/93-GT-254
View Paper titled, Rotating Stall Acoustic Signature in a Low Speed Centrifugal Compressor: Part 2 — Vaned Diffuser
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Topics: Acoustics, Compressors, Diffusers, Impellers, Pressure, Fourier analysis, Microphones, Waves, Excitation, Microphone arrays
Proceedings Papers

A Computational Model for the Study of Gas Turbine Combustor Dynamics

David M. Costura, Patrick B. Lawless, Steven H. Frankel
Proc. ASME. GT1998, Volume 2: Aircraft Engine; Marine; Microturbines and Small Turbomachinery, V002T02A007, June 2–5, 1998
Publisher: American Society of Mechanical Engineers
Paper No: 98-GT-342
https://doi.org/10.1115/98-GT-342
View Paper titled, A Computational Model for the Study of Gas Turbine Combustor Dynamics
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Topics: Combustion chambers, Dynamics (Mechanics), Gas turbines, Algorithms, Chemistry, Combustion, Energy resources, Flow (Dynamics), Momentum, Simulation
Proceedings Papers

Instability Pathology of a High Speed Centrifugal Compressor

William C. Oakes, Patrick B. Lawless, Sanford Fleeter
Proc. ASME. GT1999, Volume 4: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; IGTI Scholar Award; General, V004T03A053, June 7–10, 1999
Publisher: American Society of Mechanical Engineers
Paper No: 99-GT-415
https://doi.org/10.1115/99-GT-415
View Paper titled, Instability Pathology of a High Speed Centrifugal Compressor
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Topics: Compressors, Cycles, Surges, Diffusers
Proceedings Papers

A Model for Radial Flow Turbine Performance in Highly Unsteady Flows

Xiao Hu, Patrick B. Lawless
Proc. ASME. GT2001, Volume 1: Aircraft Engine; Marine; Turbomachinery; Microturbines and Small Turbomachinery, V001T03A016, June 4–7, 2001
Publisher: American Society of Mechanical Engineers
Paper No: 2001-GT-0312
https://doi.org/10.1115/2001-GT-0312
View Paper titled, A Model for Radial Flow Turbine Performance in Highly Unsteady Flows
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Topics: Radial flow, Turbines, Unsteady flow, Flow (Dynamics), Turbomachinery, Aircraft engines, Compression, Diesel engines, Dynamics (Mechanics), Engines
Journal Articles

Particle Image Velocity Investigation of a High Speed Centrifugal Compressor Diffuser: Spanwise and Loading Variations

Beni Cukurel, Patrick B. Lawless, Sanford Fleeter
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. April 2010, 132(2): 021010.
https://doi.org/10.1115/1.3104616
Published Online: January 12, 2010
View Article titled, Particle Image Velocity Investigation of a High Speed Centrifugal Compressor Diffuser: Spanwise and Loading Variations
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Topics: Compressors, Diffusers, Flow (Dynamics), Impellers, Particulate matter, Mach number
Journal Articles

An Experimental Study of Vane Clocking Effects on Embedded Compressor Stage Performance

Nicole L. Key, Patrick B. Lawless, Sanford Fleeter
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. January 2010, 132(1): 011018.
https://doi.org/10.1115/1.3072714
Published Online: September 21, 2009
View Article titled, An Experimental Study of Vane Clocking Effects on Embedded Compressor Stage Performance
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Topics: Compressors, Design, Pressure, Stators, Wakes, Blades
Proceedings Papers

PIV Investigation of a High Speed Centrifugal Compressor Diffuser: Spanwise and Loading Variations

Beni Cukurel, Patrick B. Lawless, Sanford Fleeter
Proc. ASME. GT2008, Volume 6: Turbomachinery, Parts A, B, and C, 1677-1686, June 9–13, 2008
Publisher: American Society of Mechanical Engineers
Paper No: GT2008-51321
https://doi.org/10.1115/GT2008-51321
View Paper titled, PIV Investigation of a High Speed Centrifugal Compressor Diffuser: Spanwise and Loading Variations
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Topics: Compressors, Diffusers, Flow (Dynamics), Durability, Impellers, Particulate matter, Unsteady flow
Proceedings Papers

An Experimental Study of Vane Clocking Effects on Embedded Compressor Stage Performance

Nicole L. Key, Patrick B. Lawless, Sanford Fleeter
Proc. ASME. GT2008, Volume 6: Turbomachinery, Parts A, B, and C, 1973-1984, June 9–13, 2008
Publisher: American Society of Mechanical Engineers
Paper No: GT2008-51087
https://doi.org/10.1115/GT2008-51087
View Paper titled, An Experimental Study of Vane Clocking Effects on Embedded Compressor Stage Performance
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Topics: Compressors, Stators, Wakes, Design, Inlet guide vanes, Blades, Diluents, High cycle fatigue, Indexing (Machining), Noise (Sound)
Proceedings Papers

An Investigation of the Flow Physics of Vane Clocking Using Unsteady Flow Measurements

Nicole L. Key, Patrick B. Lawless, Sanford Fleeter
Proc. ASME. GT2008, Volume 6: Turbomachinery, Parts A, B, and C, 2003-2014, June 9–13, 2008
Publisher: American Society of Mechanical Engineers
Paper No: GT2008-51091
https://doi.org/10.1115/GT2008-51091
View Paper titled, An Investigation of the Flow Physics of Vane Clocking Using Unsteady Flow Measurements
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Topics: Flow (Dynamics), Physics, Unsteady flow, Wakes, Stators, Boundary layers, Rotors, Compressors, Design, Separation (Technology)
Proceedings Papers

Development of the Unsteady Flow on a Turbine Rotor Platform Downstream of a Rim Seal

Kirk D. Gallier, Patrick B. Lawless, Sanford Fleeter
Proc. ASME. GT2004, Volume 5: Turbo Expo 2004, Parts A and B, 939-947, June 14–17, 2004
Publisher: American Society of Mechanical Engineers
Paper No: GT2004-53899
https://doi.org/10.1115/GT2004-53899
View Paper titled, Development of the Unsteady Flow on a Turbine Rotor Platform Downstream of a Rim Seal
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Topics: Rotors, Turbines, Unsteady flow, Flow (Dynamics), Blades, Cavities, Design, Disks, Heat transfer, High temperature
Proceedings Papers

Rotor Wake Variability in a Transonic Compressor Stage

Nicole L. Key, Patrick B. Lawless, Sanford Fleeter
Proc. ASME. GT2004, Volume 6: Turbo Expo 2004, 497-505, June 14–17, 2004
Publisher: American Society of Mechanical Engineers
Paper No: GT2004-53486
https://doi.org/10.1115/GT2004-53486
View Paper titled, Rotor Wake Variability in a Transonic Compressor Stage
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Topics: Compressors, Rotors, Wakes, Blades, High cycle fatigue, Damping, Gas turbines, Manufacturing, Particulate matter