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Randall Mathison
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Proceedings Papers

A New Experimental Facility for the Study of Blade Tip Rubs at Engine Relevant Temperatures

Noah Broski, Christopher Keener, Theodore Loizos, Randall Mathison, Kiran D’Souza, Thomas Kasprow, Agnieszka M. Wusatowska-Sarnek
Proc. ASME. GT2024, Volume 10A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing, V10AT23A011, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-129413
https://doi.org/10.1115/GT2024-129413
View Paper titled, A New Experimental Facility for the Study of Blade Tip Rubs at Engine Relevant Temperatures
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Topics: Blades, Engines, Gas turbines, Temperature, Turbomachinery, Linings (Textiles), Temperature control, Design, Aircraft engines, Clearances (Engineering)
Proceedings Papers

Experimental Identification of Blade Tip Rub Forces at Engine Relevant Temperatures and Speeds

Robin Reifsnyder, Randall Mathison, Kiran D’Souza
Proc. ASME. GT2024, Volume 10B: Structures and Dynamics — Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V10BT27A036, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-129235
https://doi.org/10.1115/GT2024-129235
View Paper titled, Experimental Identification of Blade Tip Rub Forces at Engine Relevant Temperatures and Speeds
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Topics: Blades, Engines, Temperature, Clearances (Engineering), Stress, Transfer functions, Collaboration, Design, Engine efficiency, Force measurement
Proceedings Papers

Adjoint Optimization of Non-Axisymmetric Endwall Contours to Reduce Losses in a High-Pressure Turbine

Austin Hendrickson, Spencer Sperling, Bao Nguyen, Richard Celestina, Jong Liu, Hakan Aksoy, Jeremy Nickol, Randall Mathison
Proc. ASME. GT2024, Volume 12B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing, V12BT30A047, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-129375
https://doi.org/10.1115/GT2024-129375
View Paper titled, Adjoint Optimization of Non-Axisymmetric Endwall Contours to Reduce Losses in a High-Pressure Turbine
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Topics: Computational fluid dynamics, Gas turbines, High pressure (Physics), Optimization, Turbines, Flow (Dynamics), Geometry, Vortices, Computer software, Design
Proceedings Papers

Modeling Tip Flow Structures and Heat Transfer in Contemporary Cooled and Uncooled High-Pressure Turbine Blades

Louis Christensen, Richard Celestina, Spencer Sperling, Randall Mathison, Hakan Aksoy, Jong Liu, Jeremy Nickol
Proc. ASME. GT2023, Volume 7A: Heat Transfer — Combustors; Film Cooling, V07AT12A019, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-104002
https://doi.org/10.1115/GT2023-104002
View Paper titled, Modeling Tip Flow Structures and Heat Transfer in Contemporary Cooled and Uncooled High-Pressure Turbine Blades
Open the PDF for Modeling Tip Flow Structures and Heat Transfer in Contemporary Cooled and Uncooled High-Pressure Turbine Blades in another window
Topics: Flow (Dynamics), Heat transfer, High pressure (Physics), Modeling, Turbine blades, Cooling, Blades, Cavities, Vortices, Pressure
Proceedings Papers

Comparison of Computational Predictions for a Cooled High-Pressure Turbine to Data From a Short Duration Experiment

Louis Christensen, Richard Celestina, Spencer Sperling, Randall Mathison, Hakan Aksoy, Jong Liu, Jeremy Nickol
Proc. ASME. GT2023, Volume 7A: Heat Transfer — Combustors; Film Cooling, V07AT12A018, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-103994
https://doi.org/10.1115/GT2023-103994
View Paper titled, Comparison of Computational Predictions for a Cooled High-Pressure Turbine to Data From a Short Duration Experiment
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Topics: High pressure (Physics), Turbines, Blades, Heat transfer, Temperature distribution, Cooling, Engineering simulation, Simulation, Film cooling, Gas turbines
Proceedings Papers

Effect of Coolant Flowrate on High-Pressure Turbine Tip Flow Structures and Thermal Loading

Louis Christensen, Richard Celestina, Spencer Sperling, Randall Mathison, Hakan Aksoy, Jong Liu, Jeremy Nickol
Proc. ASME. GT2023, Volume 7A: Heat Transfer — Combustors; Film Cooling, V07AT12A020, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-104008
https://doi.org/10.1115/GT2023-104008
View Paper titled, Effect of Coolant Flowrate on High-Pressure Turbine Tip Flow Structures and Thermal Loading
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Topics: Coolants, Flow (Dynamics), High pressure (Physics), Turbines, Blades, Film cooling, Turbine blades, Gas turbines, Heat transfer, Cooling
Journal Articles

Experimental Determination of Blade Tip Rub Forces in a Multiblade System

Robin Reifsnyder, Christopher Keener, Randall Mathison, Kiran D'Souza
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. April 2023, 145(4): 041011.
Paper No: GTP-22-1402
https://doi.org/10.1115/1.4055884
Published Online: December 13, 2022
View Article titled, Experimental Determination of Blade Tip Rub Forces in a Multiblade System
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Topics: Blades, Stress
Proceedings Papers

Effect of Vane/Blade Interaction for a Cooled Turbine Blade — Part II: Unsteady Pressure and Heat Transfer Distributions

Spencer Sperling, Louis Christensen, Randall Mathison, Hakan Aksoy, Jong Liu, Jeremy Nickol
Proc. ASME. GT2022, Volume 6B: Heat Transfer — General Interest/Additive Manufacturing Impacts on Heat Transfer; Internal Air Systems; Internal Cooling, V06BT13A002, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-78272
https://doi.org/10.1115/GT2022-78272
View Paper titled, Effect of Vane/Blade Interaction for a Cooled Turbine Blade — Part II: Unsteady Pressure and Heat Transfer Distributions
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Topics: Blades, Heat transfer, Pressure, Turbine blades, Cooling, Suction, Film cooling, Flow (Dynamics), Fluctuations (Physics), Airfoils
Proceedings Papers

Effect of Vane/Blade Interaction for a Cooled Turbine Blade — Part I: Comparison of Experimental and Numerical Results

Spencer Sperling, Louis Christensen, Randall Mathison, Hakan Aksoy, Jong Liu, Jeremy Nickol
Proc. ASME. GT2022, Volume 6B: Heat Transfer — General Interest/Additive Manufacturing Impacts on Heat Transfer; Internal Air Systems; Internal Cooling, V06BT13A001, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-78271
https://doi.org/10.1115/GT2022-78271
View Paper titled, Effect of Vane/Blade Interaction for a Cooled Turbine Blade — Part I: Comparison of Experimental and Numerical Results
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Topics: Blades, Turbine blades, Engineering simulation, Simulation, Gas turbines, Heat transfer, Turbines, Airfoils, Flow (Dynamics), Pressure
Proceedings Papers

Comparison of Time-Accurate and Steady-State Predictions of Heat Transfer and Pressure for a Rotating Cooled Turbine

Spencer Sperling, Louis Christensen, Randall Mathison, Hakan Aksoy, Jong Liu, Jeremy Nickol
Proc. ASME. GT2022, Volume 6B: Heat Transfer — General Interest/Additive Manufacturing Impacts on Heat Transfer; Internal Air Systems; Internal Cooling, V06BT13A003, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-78273
https://doi.org/10.1115/GT2022-78273
View Paper titled, Comparison of Time-Accurate and Steady-State Predictions of Heat Transfer and Pressure for a Rotating Cooled Turbine
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Topics: Heat transfer, Pressure, Steady state, Turbines, Gas turbines, Simulation, Flow (Dynamics), Modeling, Approximation, Computational fluid dynamics
Proceedings Papers

Experimental Determination of Blade Tip Rub Forces in a Multi-Blade System

Robin Reifsnyder, Chris Keener, Randall Mathison, Kiran D’Souza
Proc. ASME. GT2022, Volume 8B: Structures and Dynamics — Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V08BT27A032, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-83344
https://doi.org/10.1115/GT2022-83344
View Paper titled, Experimental Determination of Blade Tip Rub Forces in a Multi-Blade System
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Topics: Blades, Stress, Frequency response, Gas turbines, Physics, Rotating blades, Shaft angle encoders, Turbomachinery
Proceedings Papers

Film Cooling Hole Shape Effects on Turbine Blade Heat Transfer – Part I: Computational Comparison to Experiment

Spencer Sperling, Louis Christensen, Randall Mathison, Hakan Aksoy, Jong Liu, Jeremy Nickol
Proc. ASME. GT2022, Volume 6A: Heat Transfer — Combustors; Film Cooling, V06AT12A002, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-78244
https://doi.org/10.1115/GT2022-78244
View Paper titled, Film Cooling Hole Shape Effects on Turbine Blade Heat Transfer – Part I: Computational Comparison to Experiment
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Topics: Film cooling, Heat transfer, Shapes, Turbine blades, Blades, Cooling, Pressure, Simulation, Turbines, Computation
Proceedings Papers

Film Cooling Hole Shape Effects on Turbine Blade Heat Transfer – Part II: Effects of Mass Flow Rate and Unsteadiness

Spencer Sperling, Louis Christensen, Randall Mathison, Hakan Aksoy, Jong Liu, Jeremy Nickol
Proc. ASME. GT2022, Volume 6A: Heat Transfer — Combustors; Film Cooling, V06AT12A003, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-78245
https://doi.org/10.1115/GT2022-78245
View Paper titled, Film Cooling Hole Shape Effects on Turbine Blade Heat Transfer – Part II: Effects of Mass Flow Rate and Unsteadiness
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Topics: Film cooling, Flow (Dynamics), Heat transfer, Shapes, Turbine blades, Cooling, Coolants, Pressure, Turbines, Blades
Proceedings Papers

Educational Effectiveness of Brayton Cycle Compare and Solve Interactive Gas Turbine Simulator

Louis Christensen, Randall Mathison
Proc. ASME. GT2021, Volume 4: Controls, Diagnostics, and Instrumentation; Cycle Innovations; Cycle Innovations: Energy Storage; Education; Electric Power, V004T08A004, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-59622
https://doi.org/10.1115/GT2021-59622
View Paper titled, Educational Effectiveness of Brayton Cycle Compare and Solve Interactive Gas Turbine Simulator
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Topics: Brayton cycle, Gas turbines, Students, Homework, Cycles, Engines, Aerospace engineering, Design, Energy generation, Engineering teachers
Proceedings Papers

Coupling of Mainstream Velocity Fluctuations With Plenum Fed Film Cooling Jets

Spencer Sperling, Louis Christensen, Richard Celestina, Randall Mathison, Hakan Aksoy, Jong Liu, Jeremy Nickol
Proc. ASME. GT2021, Volume 5A: Heat Transfer — Combustors; Film Cooling, V05AT12A024, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-59825
https://doi.org/10.1115/GT2021-59825
View Paper titled, Coupling of Mainstream Velocity Fluctuations With Plenum Fed Film Cooling Jets
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Topics: Film cooling, Fluctuations (Physics), Jets, Simulation, Reynolds-averaged Navier–Stokes equations, Design, Modeling, Resonance, Turbulence, Acoustics
Proceedings Papers

Investigating Heat Transfer in a Straight Cooling Passage Using Transient Infrared Temperature Data and URANS Conjugate Heat Transfer Analysis

Louis Christensen, Richard Celestina, Spencer Sperling, Randall Mathison, Hakan Aksoy, Jong Liu, Jeremy Nickol
Proc. ASME. GT2021, Volume 5B: Heat Transfer — General Interest; Internal Air Systems; Internal Cooling, V05BT15A023, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-60381
https://doi.org/10.1115/GT2021-60381
View Paper titled, Investigating Heat Transfer in a Straight Cooling Passage Using Transient Infrared Temperature Data and URANS Conjugate Heat Transfer Analysis
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Topics: Cooling, Heat transfer, Temperature, Transients (Dynamics), Heat conduction, Turbulence, Computer simulation, Errors, Convection, Engineering simulation
Journal Articles

Infrared Temperature Measurements of the Blade Tip for a Turbine Operating at Corrected Engine Conditions

Louis Christensen, Richard Celestina, Spencer Sperling, Randall Mathison, Hakan Aksoy, Jong Liu
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. October 2021, 143(10): 101005.
Paper No: TURBO-20-1383
https://doi.org/10.1115/1.4050675
Published Online: May 17, 2021
View Article titled, Infrared Temperature Measurements of the Blade Tip for a Turbine Operating at Corrected Engine Conditions
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Topics: Blades, Cooling, Temperature, Flow (Dynamics), Turbines
Proceedings Papers

Development of New Single and High-Density Heat-Flux Gauges for Unsteady Heat Transfer Measurements for a Rotating Transonic Turbine

Richard Celestina, Spencer Sperling, Louis Christensen, Randall Mathison, Hakan Aksoy, Jong Liu
Proc. ASME. GT2020, Volume 7C: Heat Transfer, V07CT13A008, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14527
https://doi.org/10.1115/GT2020-14527
View Paper titled, Development of New Single and High-Density Heat-Flux Gauges for Unsteady Heat Transfer Measurements for a Rotating Transonic Turbine
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Topics: Density, Gages, Heat flux, Heat transfer, Turbines, Airfoils, Cooling, Flow (Dynamics), High pressure (Physics), Pressure
Proceedings Papers

Infrared Temperature Measurements of the Blade Tip for a Turbine Operating at Corrected Engine Conditions

Louis Christensen, Richard Celestina, Spencer Sperling, Randall Mathison, Hakan Aksoy, Jong Liu
Proc. ASME. GT2020, Volume 7C: Heat Transfer, V07CT13A009, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14528
https://doi.org/10.1115/GT2020-14528
View Paper titled, Infrared Temperature Measurements of the Blade Tip for a Turbine Operating at Corrected Engine Conditions
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Topics: Blades, Engines, Temperature measurement, Turbines, Flow (Dynamics), Cooling, Temperature, Airfoils, Design, Filters
Proceedings Papers

Heat Transfer and Pressure Measurements for the Forward Purge Cavity, Inner Endwall, and Rotor Platform of a Cooled Transonic Turbine Stage

Jeremy Nickol, Matthew Tomko, Randall Mathison, Jong S. Liu, Mark Morris, Malak F. Malak
Proc. ASME. GT2018, Volume 5B: Heat Transfer, V05BT15A033, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-76978
https://doi.org/10.1115/GT2018-76978
View Paper titled, Heat Transfer and Pressure Measurements for the Forward Purge Cavity, Inner Endwall, and Rotor Platform of a Cooled Transonic Turbine Stage
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Topics: Cavities, Heat transfer, Pressure measurement, Rotors, Turbines, Flow (Dynamics), Cooling, Blades, Airfoils, Circuits