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David E. Ashpis
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Proceedings Papers

Experimental Investigation of Transition to Turbulence as Affected by Passing Wakes

Richard W. Kaszeta, Terrence W. Simon, David E. Ashpis
Proc. ASME. GT2001, Volume 3: Heat Transfer; Electric Power; Industrial and Cogeneration, V003T01A069, June 4–7, 2001
Paper No: 2001-GT-0195
DOI: https://doi.org/10.1115/2001-GT-0195
View Paper titled, Experimental Investigation of Transition to Turbulence as Affected by Passing Wakes
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Topics: Turbulence, Wakes, Flow (Dynamics), Suction, Pressure, Boundary layers, Gas turbines, Geometry, Pressure gradient, Reynolds number
Proceedings Papers

Test Conditions for Performance Characterization of Dielectric Barrier Discharge (DBD) Plasma Actuators for Active Flow Control in Jet Engines

David E. Ashpis, Douglas R. Thurman
Proc. ASME. GT2011, Volume 1: Aircraft Engine; Ceramics; Coal, Biomass and Alternative Fuels; Wind Turbine Technology, 389-415, June 6–10, 2011
Paper No: GT2011-46583
DOI: https://doi.org/10.1115/GT2011-46583
View Paper titled, Test Conditions for Performance Characterization of Dielectric Barrier Discharge (DBD) Plasma Actuators for Active Flow Control in Jet Engines
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Topics: Actuators, Flow control, Jet engines, Performance characterization, Plasmas (Ionized gases), Engines, Pressure, Temperature, Density, Flight
Proceedings Papers

On the Physics of the Flow Separation Along a Low Pressure Turbine Blade Under Unsteady Flow Conditions

Meinhard T. Schobeiri, Burak O¨ztu¨rk, David E. Ashpis
Proc. ASME. GT2003, Volume 6: Turbo Expo 2003, Parts A and B, 1063-1079, June 16–19, 2003
Paper No: GT2003-38917
DOI: https://doi.org/10.1115/GT2003-38917
View Paper titled, On the Physics of the Flow Separation Along a Low Pressure Turbine Blade Under Unsteady Flow Conditions
Open the PDF for On the Physics of the Flow Separation Along a Low Pressure Turbine Blade Under Unsteady Flow Conditions in another window
Topics: Flow separation, Physics, Pressure, Turbine blades, Unsteady flow, Wakes, Flow (Dynamics), Separation (Technology), Blades, Boundary layers
Proceedings Papers

Intermittent Behavior of the Separated Boundary Layer Along the Suction Surface of a Low Pressure Turbine Blade Under Periodic Unsteady Flow Conditions

B. O¨ztu¨rk, M. T. Schobeiri, David E. Ashpis
Proc. ASME. GT2005, Volume 3: Turbo Expo 2005, Parts A and B, 1011-1027, June 6–9, 2005
Paper No: GT2005-68603
DOI: https://doi.org/10.1115/GT2005-68603
View Paper titled, Intermittent Behavior of the Separated Boundary Layer Along the Suction Surface of a Low Pressure Turbine Blade Under Periodic Unsteady Flow Conditions
Open the PDF for Intermittent Behavior of the Separated Boundary Layer Along the Suction Surface of a Low Pressure Turbine Blade Under Periodic Unsteady Flow Conditions in another window
Topics: Boundary layers, Pressure, Suction, Turbine blades, Unsteady flow, Reynolds number, Separation (Technology), Flow (Dynamics), Flow separation, Wakes
Proceedings Papers

Effect of Reynolds Number and Periodic Unsteady Wake Flow Condition on Boundary Layer Development, Separation, and Re-Attachment Along the Suction Surface of a Low Pressure Turbine Blade

B. O¨ztu¨rk, M. T. Schobeiri, David E. Ashpis
Proc. ASME. GT2005, Volume 3: Turbo Expo 2005, Parts A and B, 991-1010, June 6–9, 2005
Paper No: GT2005-68600
DOI: https://doi.org/10.1115/GT2005-68600
View Paper titled, Effect of Reynolds Number and Periodic Unsteady Wake Flow Condition on Boundary Layer Development, Separation, and Re-Attachment Along the Suction Surface of a Low Pressure Turbine Blade
Open the PDF for Effect of Reynolds Number and Periodic Unsteady Wake Flow Condition on Boundary Layer Development, Separation, and Re-Attachment Along the Suction Surface of a Low Pressure Turbine Blade in another window
Topics: Boundary layers, Pressure, Reynolds number, Separation (Technology), Suction, Turbine blades, Wakes, Bubbles, Flow (Dynamics), Pressure measurement
Journal Articles

On the Physics of Flow Separation Along a Low Pressure Turbine Blade Under Unsteady Flow Conditions

Meinhard T. Schobeiri, Burak Öztürk, David E. Ashpis
Journal: Journal of Fluids Engineering
Article Type: Technical Papers
J. Fluids Eng. May 2005, 127(3): 503–513.
DOI: https://doi.org/10.1115/1.1905646
Published Online: February 24, 2005
View Article titled, On the Physics of Flow Separation Along a Low Pressure Turbine Blade Under Unsteady Flow Conditions
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Topics: Blades, Boundary layers, Flow (Dynamics), Pressure, Separation (Technology), Suction, Turbulence, Wakes, Cascades (Fluid dynamics), Turbines
Journal Articles

Effect of Reynolds Number and Periodic Unsteady Wake Flow Condition on Boundary Layer Development, Separation, and Intermittency Behavior Along the Suction Surface of a Low Pressure Turbine Blade

M. T. Schobeiri, B. Öztürk, David E. Ashpis
Journal: Journal of Turbomachinery
Article Type: Technical Papers
J. Turbomach. January 2007, 129(1): 92–107.
DOI: https://doi.org/10.1115/1.2219762
Published Online: February 1, 2005
View Article titled, Effect of Reynolds Number and Periodic Unsteady Wake Flow Condition on Boundary Layer Development, Separation, and Intermittency Behavior Along the Suction Surface of a Low Pressure Turbine Blade
Open the PDF for Effect of Reynolds Number and Periodic Unsteady Wake Flow Condition on Boundary Layer Development, Separation, and Intermittency Behavior Along the Suction Surface of a Low Pressure Turbine Blade in another window
Topics: Boundary layers, Pressure, Reynolds number, Separation (Technology), Suction, Turbulence, Wakes, Flow (Dynamics), Blades, Bubbles
Journal Articles

Predictions of Separated and Transitional Boundary Layers Under Low-Pressure Turbine Airfoil Conditions Using an Intermittency Transport Equation

Y. B. Suzen, Senior Engineer Associate, P. G. Huang, Professor, Lennart S. Hultgren, Aerospace Engineer, Mem. ASME, David E. Ashpis, Aerospace Engineer
Journal: Journal of Turbomachinery
Article Type: Technical Papers
J. Turbomach. July 2003, 125(3): 455–464.
DOI: https://doi.org/10.1115/1.1580159
Published Online: August 27, 2003
View Article titled, Predictions of Separated and Transitional Boundary Layers Under Low-Pressure Turbine Airfoil Conditions Using an Intermittency Transport Equation
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Topics: Boundary layers, Flow (Dynamics), Pressure, Turbulence, Turbines, Airfoils, Computation, Reynolds number