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Proceedings Papers

Vortex Unsteadiness in the Endwall Region of a High-Lift Low-Pressure Turbine Passage

Christopher R. Marks, Nathan Fletcher, Rolf Sondergaard
Proc. ASME. GT2022, Volume 10B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing; Radial Turbomachinery Aerodynamics, V10BT30A003, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-79335
https://doi.org/10.1115/GT2022-79335
View Paper titled, Vortex Unsteadiness in the Endwall Region of a High-Lift Low-Pressure Turbine Passage
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Topics: Pressure, Turbines, Vortices, Flow (Dynamics), Junctions, Blades, Cascades (Fluid dynamics), Fluctuations (Physics), Suction, Heat transfer
Journal Articles

Vortex Unsteadiness in the Endwall Region of a High-Lift Low-Pressure Turbine Passage

Christopher R. Marks, Nathan Fletcher, Rolf Sondergaard
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. January 2023, 145(1): 011012.
Paper No: TURBO-22-1167
https://doi.org/10.1115/1.4055444
Published Online: October 7, 2022
View Article titled, Vortex Unsteadiness in the Endwall Region of a High-Lift Low-Pressure Turbine Passage
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Topics: Flow (Dynamics), Vortices, Pressure, Turbines, Fluctuations (Physics)
Journal Articles

Comparison of Endwall Loss Reduction Techniques in a High-Lift Turbine Passage

Christopher R. Marks, Nathan Fletcher, Rolf Sondergaard
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. September 2021, 143(9): 091007.
Paper No: TURBO-20-1389
https://doi.org/10.1115/1.4050599
Published Online: May 11, 2021
View Article titled, Comparison of Endwall Loss Reduction Techniques in a High-Lift Turbine Passage
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Topics: Flow (Dynamics), Jets, Pressure, Turbines, Vortices, Design, Cascades (Fluid dynamics), Separation (Technology), Blades, Suction
Proceedings Papers

Comparison of Endwall Loss Reduction Techniques in a High-Lift Turbine Passage

Christopher R. Marks, Nathan Fletcher, Rolf Sondergaard
Proc. ASME. GT2020, Volume 2B: Turbomachinery, V02BT33A017, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-15258
https://doi.org/10.1115/GT2020-15258
View Paper titled, Comparison of Endwall Loss Reduction Techniques in a High-Lift Turbine Passage
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Topics: Turbines, Flow (Dynamics), Blades, Cascades (Fluid dynamics), Design, Shapes, Corners (Structural elements), Jets, Particulate matter, Pressure
Journal Articles

Film Cooling on the Geometrically Modified Trailing Edge Model of Gas Turbine Blade

Zifeng Yang, Mark Johnson, Natalia Posada, Shichuan Ou, Rolf Sondergaard
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. September 2019, 141(9): 091012.
Paper No: TURBO-18-1193
https://doi.org/10.1115/1.4043968
Published Online: July 22, 2019
View Article titled, Film Cooling on the Geometrically Modified Trailing Edge Model of Gas Turbine Blade
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Topics: Coolants, Film cooling, Flow (Dynamics), Cooling, Blades
Journal Articles

Experimental Investigation of Total Pressure Loss Development in a Highly Loaded Low-Pressure Turbine Cascade

Philip Bear, Mitch Wolff, Andreas Gross, Christopher R. Marks, Rolf Sondergaard
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. March 2018, 140(3): 031003.
Paper No: TURBO-17-1167
https://doi.org/10.1115/1.4038413
Published Online: December 20, 2017
View Article titled, Experimental Investigation of Total Pressure Loss Development in a Highly Loaded Low-Pressure Turbine Cascade
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Topics: Blades, Cascades (Fluid dynamics), Flow (Dynamics), Pressure, Turbulence, Turbines, Suction
Proceedings Papers

Experimental Investigation of Total Pressure Loss Development in a Highly Loaded Low Pressure Turbine Cascade

Philip Bear, Mitch Wolff, Andreas Gross, Christopher R. Marks, Rolf Sondergaard
Proc. ASME. GT2017, Volume 2A: Turbomachinery, V02AT40A030, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-64684
https://doi.org/10.1115/GT2017-64684
View Paper titled, Experimental Investigation of Total Pressure Loss Development in a Highly Loaded Low Pressure Turbine Cascade
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Topics: Cascades (Fluid dynamics), Pressure, Turbines, Blades, Flow (Dynamics), Turbulence, Aircraft, Design methodology, Engines, Gas turbines
Journal Articles

Effect of Blade Profile Contouring on Endwall Flow Structure in a High-Lift Low-Pressure Turbine Cascade

Keith Sangston, Jesse Little, M. Eric Lyall, Rolf Sondergaard
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. February 2017, 139(2): 021006.
Paper No: TURBO-14-1267
https://doi.org/10.1115/1.4034480
Published Online: October 4, 2016
View Article titled, Effect of Blade Profile Contouring on Endwall Flow Structure in a High-Lift Low-Pressure Turbine Cascade
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Topics: Airfoils, Blades, Cascades (Fluid dynamics), Deformation, Flow (Dynamics), Pressure, Turbulence, Computational fluid dynamics, Shear (Mechanics), Turbines
Proceedings Papers

Experimental Study of the Unsteady Aerodynamics in a Linear Cascade With Low Reynolds Number Low Pressure Turbine Blades

Christopher G. Murawski, Rolf Sondergaard, Richard B. Rivir, Kambiz Vafai, Terrence W. Simon, Ralph J. Volino
Proc. ASME. GT1997, Volume 1: Aircraft Engine; Marine; Turbomachinery; Microturbines and Small Turbomachinery, V001T03A026, June 2–5, 1997
Publisher: American Society of Mechanical Engineers
Paper No: 97-GT-095
https://doi.org/10.1115/97-GT-095
View Paper titled, Experimental Study of the Unsteady Aerodynamics in a Linear Cascade With Low Reynolds Number Low Pressure Turbine Blades
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Topics: Aerodynamics, Cascades (Fluid dynamics), Pressure, Reynolds number, Turbine blades, Turbulence, Separation (Technology), Flow (Dynamics), Suction, Shrinkage (Materials)
Proceedings Papers

Turbine Separation Control Using Pulsed Vortex Generator Jets

Jeffrey P. Bons, Rolf Sondergaard, Richard B. Rivir
Proc. ASME. GT2000, Volume 3: Heat Transfer; Electric Power; Industrial and Cogeneration, V003T01A067, May 8–11, 2000
Publisher: American Society of Mechanical Engineers
Paper No: 2000-GT-0262
https://doi.org/10.1115/2000-GT-0262
View Paper titled, Turbine Separation Control Using Pulsed Vortex Generator Jets
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Topics: Generators, Jets, Separation (Technology), Turbines, Vortices, Blades, Boundary layers, Pressure, Suction, Aircraft engines
Proceedings Papers

The Fluid Dynamics of LPT Blade Separation Control Using Pulsed Jets

Jeffrey P. Bons, Rolf Sondergaard, Richard B. Rivir
Proc. ASME. GT2001, Volume 3: Heat Transfer; Electric Power; Industrial and Cogeneration, V003T01A064, June 4–7, 2001
Publisher: American Society of Mechanical Engineers
Paper No: 2001-GT-0190
https://doi.org/10.1115/2001-GT-0190
View Paper titled, The Fluid Dynamics of LPT Blade Separation Control Using Pulsed Jets
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Topics: Blades, Fluid dynamics, Jets, Separation (Technology), Boundary layers, Cycles, Vortices, Generators, Relaxation (Physics), Turbines
Journal Articles

Endwall Loss Reduction of High Lift Low Pressure Turbine Airfoils Using Profile Contouring—Part I: Airfoil Design

M. Eric Lyall, Paul I. King, John P. Clark, Rolf Sondergaard
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. August 2014, 136(8): 081005.
Paper No: TURBO-13-1195
https://doi.org/10.1115/1.4025951
Published Online: January 31, 2014
View Article titled, Endwall Loss Reduction of High Lift Low Pressure Turbine Airfoils Using Profile Contouring—Part I: Airfoil Design
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Topics: Airfoils, Design, Pressure
Journal Articles

End Wall Loss Reduction of High Lift Low Pressure Turbine Airfoils Using Profile Contouring—Part II: Validation

Keith Sangston, Jesse Little, M. Eric Lyall, Rolf Sondergaard
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. August 2014, 136(8): 081006.
Paper No: TURBO-13-1196
https://doi.org/10.1115/1.4025952
Published Online: January 31, 2014
View Article titled, End Wall Loss Reduction of High Lift Low Pressure Turbine Airfoils Using Profile Contouring—Part II: Validation
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Topics: Airfoils, Flow (Dynamics), Pressure, Turbines, Vortices, Boundary layers, Turbulence, Cascades (Fluid dynamics), Design, Blades
Journal Articles

Parametric Optimization of Unsteady End Wall Blowing on a Highly Loaded Low-Pressure Turbine

Stuart I. Benton, Chiara Bernardini, Jeffrey P. Bons, Rolf Sondergaard
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. July 2014, 136(7): 071013.
Paper No: TURBO-13-1231
https://doi.org/10.1115/1.4026127
Published Online: January 2, 2014
View Article titled, Parametric Optimization of Unsteady End Wall Blowing on a Highly Loaded Low-Pressure Turbine
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Topics: Cycles, Flow (Dynamics), Pressure, Suction, Vortices, Momentum, Jets, Cascades (Fluid dynamics), Turbines, Airfoils
Proceedings Papers

Performance Estimation of a Turbine Under Partial-Admission and Flow Pulsation Conditions at Inlet

Ron Ho Ni, William Humber, Michael Ni, Rolf Sondergaard, Mike Ooten
Proc. ASME. GT2013, Volume 6C: Turbomachinery, V06CT42A019, June 3–7, 2013
Publisher: American Society of Mechanical Engineers
Paper No: GT2013-94811
https://doi.org/10.1115/GT2013-94811
View Paper titled, Performance Estimation of a Turbine Under Partial-Admission and Flow Pulsation Conditions at Inlet
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Topics: Flow (Dynamics), Turbines, Entropy, Pressure, Rotors, Temperature, Flow simulation, Fluids
Proceedings Papers

Endwall Loss Reduction of High Lift Low Pressure Turbine Airfoils Using Profile Contouring: Part II — Validation

Keith Sangston, Jesse Little, M. Eric Lyall, Rolf Sondergaard
Proc. ASME. GT2013, Volume 6A: Turbomachinery, V06AT36A024, June 3–7, 2013
Publisher: American Society of Mechanical Engineers
Paper No: GT2013-95002
https://doi.org/10.1115/GT2013-95002
View Paper titled, Endwall Loss Reduction of High Lift Low Pressure Turbine Airfoils Using Profile Contouring: Part II — Validation
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Topics: Airfoils, Pressure, Turbines, Flow (Dynamics), Vortices, Blades, Boundary layers, Cascades (Fluid dynamics), Deformation, Design
Proceedings Papers

Parametric Optimization of Unsteady Endwall Blowing on a Highly Loaded LPT

Stuart I. Benton, Chiara Bernardini, Jeffrey P. Bons, Rolf Sondergaard
Proc. ASME. GT2013, Volume 6A: Turbomachinery, V06AT36A026, June 3–7, 2013
Publisher: American Society of Mechanical Engineers
Paper No: GT2013-95113
https://doi.org/10.1115/GT2013-95113
View Paper titled, Parametric Optimization of Unsteady Endwall Blowing on a Highly Loaded LPT
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Topics: Airfoils, Blades, Boundary layers, Cascades (Fluid dynamics), Cycles, Flow (Dynamics), Jets, Optimization, Particulate matter, Pressure
Proceedings Papers

Endwall Loss Reduction of High Lift Low Pressure Turbine Airfoils Using Profile Contouring: Part I — Airfoil Design

M. Eric Lyall, Paul I. King, John P. Clark, Rolf Sondergaard
Proc. ASME. GT2013, Volume 6A: Turbomachinery, V06AT36A023, June 3–7, 2013
Publisher: American Society of Mechanical Engineers
Paper No: GT2013-95000
https://doi.org/10.1115/GT2013-95000
View Paper titled, Endwall Loss Reduction of High Lift Low Pressure Turbine Airfoils Using Profile Contouring: Part I — Airfoil Design
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Topics: Airfoils, Design, Pressure, Turbines, Cascades (Fluid dynamics)
Proceedings Papers

Endwall Loss and Mixing Analysis of a High Lift Low Pressure Turbine Cascade

M. Eric Lyall, Paul I. King, Rolf Sondergaard
Proc. ASME. GT2012, Volume 8: Turbomachinery, Parts A, B, and C, 1205-1216, June 11–15, 2012
Publisher: American Society of Mechanical Engineers
Paper No: GT2012-68709
https://doi.org/10.1115/GT2012-68709
View Paper titled, Endwall Loss and Mixing Analysis of a High Lift Low Pressure Turbine Cascade
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Topics: Cascades (Fluid dynamics), Pressure, Turbines, Flow (Dynamics), Turbulence, Separation (Technology), Shear (Mechanics), Suction, Vortices, Boundary layers
Proceedings Papers

Secondary Flow Loss Reduction Through Blowing for a High-Lift Front-Loaded Low Pressure Turbine Cascade

Stuart Benton, Jeffrey P. Bons, Rolf Sondergaard
Proc. ASME. GT2012, Volume 8: Turbomachinery, Parts A, B, and C, 1217-1227, June 11–15, 2012
Publisher: American Society of Mechanical Engineers
Paper No: GT2012-68812
https://doi.org/10.1115/GT2012-68812
View Paper titled, Secondary Flow Loss Reduction Through Blowing for a High-Lift Front-Loaded Low Pressure Turbine Cascade
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Topics: Cascades (Fluid dynamics), Flow (Dynamics), Pressure, Turbines, Blades, Reynolds number, Jets, Flow control, Generators, Momentum