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Journal Articles

Modeling the Surface Pressure Spectrum on Rough Walls in Pressure Gradients

Daniel J. Fritsch, Vidya Vishwanathan, Christopher J. Roy, K. Todd Lowe, William J. Devenport
Journal: Journal of Fluids Engineering
Article Type: Research-Article
Publisher: ASME
J. Fluids Eng. December 2023, 145(12): 121301.
Paper No: FE-23-1057
https://doi.org/10.1115/1.4062821
Published Online: September 19, 2023
View Article titled, Modeling the Surface Pressure Spectrum on Rough Walls in Pressure Gradients
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Topics: Flow (Dynamics), Modeling, Pressure, Pressure gradient, Surface roughness, Turbulence
Proceedings Papers

Numerical Simulation on the Vortex Shedding From Airfoils of a Swirl Distortion Generator

Andrew Hayden, Cole Hefner, Alexandrina Untaroiu, John Gillespie, K. Todd Lowe
Proc. ASME. GT2021, Volume 2D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Radial Turbomachinery Aerodynamics; Unsteady Flows in Turbomachinery, V02DT39A005, June 7–11, 2021
Paper No: GT2021-58963
https://doi.org/10.1115/GT2021-58963
View Paper titled, Numerical Simulation on the Vortex Shedding From Airfoils of a Swirl Distortion Generator
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Topics: Airfoils, Computer simulation, Generators, Vortex shedding, Boundary layers, Turning angles, Aircraft, Cascades (Fluid dynamics), Computational fluid dynamics, Design
Proceedings Papers

Non-Circular and Non-Cylindrical Streamvanes

John Gillespie, K. Todd Lowe
Proc. ASME. GT2020, Volume 1: Aircraft Engine; Fans and Blowers, V001T01A031, September 21–25, 2020
Paper No: GT2020-15763
https://doi.org/10.1115/GT2020-15763
View Paper titled, Non-Circular and Non-Cylindrical Streamvanes
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Topics: Aircraft, Computational fluid dynamics, Conceptual design, Diffusers, Ducts, Engines, Errors, Flight, Flow (Dynamics), Geometry
Proceedings Papers

Development, Analysis, and Validation of a Simultaneous Inlet Total Pressure and Swirl Distortion Generator

Dustin J. Frohnapfel, K. Todd Lowe, Walter F. O’Brien
Proc. ASME. GT2020, Volume 1: Aircraft Engine; Fans and Blowers, V001T01A038, September 21–25, 2020
Paper No: GT2020-16125
https://doi.org/10.1115/GT2020-16125
View Paper titled, Development, Analysis, and Validation of a Simultaneous Inlet Total Pressure and Swirl Distortion Generator
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Topics: Generators, Pressure, Turbofans
Proceedings Papers

On the Application of Particle Image Velocimetry for Turbofan Engine Flow Quantification

Dillon P. Sluss, William M. George, K. Todd Lowe
Proc. ASME. GT2019, Volume 1: Aircraft Engine; Fans and Blowers; Marine; Honors and Awards, V001T01A027, June 17–21, 2019
Paper No: GT2019-92064
https://doi.org/10.1115/GT2019-92064
View Paper titled, On the Application of Particle Image Velocimetry for Turbofan Engine Flow Quantification
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Topics: Engine flow, Particulate matter, Turbofans, Imaging, Endoscopic devices, Ducts, Engines, Lenses (Optics), Uncertainty, Flow (Dynamics)
Proceedings Papers

Turbofan Nose Cone Interactions With Inlet Swirl

Dustin J. Frohnapfel, Elizabeth Mack, Alexandrina Untaroiu, Walter F. O’Brien, K. Todd Lowe
Proc. ASME. GT2018, Volume 1: Aircraft Engine; Fans and Blowers; Marine, V001T01A032, June 11–15, 2018
Paper No: GT2018-76616
https://doi.org/10.1115/GT2018-76616
View Paper titled, Turbofan Nose Cone Interactions With Inlet Swirl
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Topics: Turbofans, Fluids, Ducts, Engines, Architecture, Aviation, Computational fluid dynamics, Flow (Dynamics), Geometry, Modeling
Journal Articles

Complex Flow Generation and Development in a Full-Scale Turbofan Inlet

Tamara Guimarães, K. Todd Lowe, Walter F. O'Brien
Journal: Journal of Engineering for Gas Turbines and Power
Article Type: Research-Article
J. Eng. Gas Turbines Power. August 2018, 140(8): 082606.
Paper No: GTP-17-1545
https://doi.org/10.1115/1.4039179
Published Online: May 14, 2018
View Article titled, Complex Flow Generation and Development in a Full-Scale Turbofan Inlet
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Topics: Engines, Flow (Dynamics), Turbulence, Turbofans, Vortices, Aircraft, Stress
Journal Articles

Experimental Quantification of Fan Rotor Effects on Inlet Swirl Using Swirl Distortion Descriptors

Dustin J. Frohnapfel, K. Todd Lowe, Walter F. O'Brien
Journal: Journal of Engineering for Gas Turbines and Power
Article Type: Research-Article
J. Eng. Gas Turbines Power. August 2018, 140(8): 082603.
Paper No: GTP-17-1631
https://doi.org/10.1115/1.4039425
Published Online: May 3, 2018
View Article titled, Experimental Quantification of Fan Rotor Effects on Inlet Swirl Using Swirl Distortion Descriptors
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Topics: Engines, Flow (Dynamics), Rotors, Vortices, Design, Turbofans
Proceedings Papers

Application of Proper Orthogonal Decomposition to High Speed Imaging for the Study of Combustion Oscillations

Siddhartha Gadiraju, Suhyeon Park, David Gomez-Ramirez, Srinath V. Ekkad, K. Todd Lowe, Hee-Koo Moon, Yong Kim, Ram Srinivasan
Proc. ASME. GT2017, Volume 4B: Combustion, Fuels and Emissions, V04BT04A031, June 26–30, 2017
Paper No: GT2017-64602
https://doi.org/10.1115/GT2017-64602
View Paper titled, Application of Proper Orthogonal Decomposition to High Speed Imaging for the Study of Combustion Oscillations
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Topics: Combustion, Imaging, Oscillations, Principal component analysis, Flames, Fuels, Combustion chambers, Nozzles, Pressure measurement, Reynolds number
Proceedings Papers

Complex Flow Generation and Development in a Full-Scale Turbofan Inlet

Tamara Guimarães, K. Todd Lowe, Walter F. O’Brien
Proc. ASME. GT2017, Volume 2B: Turbomachinery, V02BT42A012, June 26–30, 2017
Paper No: GT2017-64756
https://doi.org/10.1115/GT2017-64756
View Paper titled, Complex Flow Generation and Development in a Full-Scale Turbofan Inlet
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Topics: Flow (Dynamics), Turbofans, Engines, Vortices, Aircraft, Inflow, Stress, Swirling flow, Turbulence, Aerodynamics
Proceedings Papers

Experimental Quantification of Fan Rotor Effects on Inlet Swirl Using Swirl Distortion Descriptors

Dustin J. Frohnapfel, Walter F. O’Brien, K. Todd Lowe
Proc. ASME. GT2017, Volume 2B: Turbomachinery, V02BT42A013, June 26–30, 2017
Paper No: GT2017-64779
https://doi.org/10.1115/GT2017-64779
View Paper titled, Experimental Quantification of Fan Rotor Effects on Inlet Swirl Using Swirl Distortion Descriptors
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Topics: Rotors, Engines, Flow (Dynamics), Design, Turbofans, Aircraft, Architecture, Generators
Proceedings Papers

Analysis of Base-Cooled Total Temperature Probes With Radiation

Joseph A. Schetz, Tyler Vincent, K. Todd Lowe
Proc. ASME. IMECE2016, Volume 1: Advances in Aerospace Technology, V001T03A047, November 11–17, 2016
Paper No: IMECE2016-65130
https://doi.org/10.1115/IMECE2016-65130
View Paper titled, Analysis of Base-Cooled Total Temperature Probes With Radiation
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Topics: Probes, Radiation (Physics), Temperature, Heat conduction, Convection, Design, Flow (Dynamics), Computational methods, Errors, Heat transfer
Journal Articles

A Diagnostic Technique for Particle Characterization Using Laser Light Extinction

Kris Barboza, Lin Ma, K. Todd Lowe, Srinath Ekkad, Wing Ng
Journal: Journal of Engineering for Gas Turbines and Power
Article Type: Research-Article
J. Eng. Gas Turbines Power. November 2016, 138(11): 111601.
Paper No: GTP-15-1466
https://doi.org/10.1115/1.4033468
Published Online: May 17, 2016
View Article titled, A Diagnostic Technique for Particle Characterization Using Laser Light Extinction
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Topics: Lasers, Particulate matter, Wavelength, Particle size
Journal Articles

An Experimental Investigation of the Performance Impact of Swirl on a Turbine Exhaust Diffuser/Collector for a Series of Diffuser Strut Geometries

Song Xue, Stephen Guillot, Wing F. Ng, Jon Fleming, K. Todd Lowe, Nihar Samal, Ulrich E. Stang
Journal: Journal of Engineering for Gas Turbines and Power
Article Type: Research-Article
J. Eng. Gas Turbines Power. September 2016, 138(9): 092603.
Paper No: GTP-15-1526
https://doi.org/10.1115/1.4032738
Published Online: March 22, 2016
View Article titled, An Experimental Investigation of the Performance Impact of Swirl on a Turbine Exhaust Diffuser/Collector for a Series of Diffuser Strut Geometries
Open the PDF for An Experimental Investigation of the Performance Impact of Swirl on a Turbine Exhaust Diffuser/Collector for a Series of Diffuser Strut Geometries in another window
Topics: Diffusers, Flow (Dynamics), Struts (Engineering), Pressure, Flow visualization, Exhaust systems
Proceedings Papers

A Diagnostic Technique for Particle Characterization Using Laser Light Extinction

Kris Barboza, Lin Ma, K. Todd Lowe, Srinath Ekkad, Wing Ng
Proc. ASME. GT2015, Volume 6: Ceramics; Controls, Diagnostics and Instrumentation; Education; Manufacturing Materials and Metallurgy; Honors and Awards, V006T05A021, June 15–19, 2015
Paper No: GT2015-43347
https://doi.org/10.1115/GT2015-43347
View Paper titled, A Diagnostic Technique for Particle Characterization Using Laser Light Extinction
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Topics: Lasers, Particulate matter, Aircraft, Engines, Absorption, Density, Disperse systems, Dust, Electromagnetic scattering, Latex
Proceedings Papers

An Experimental Investigation of the Performance Impact of Swirl on a Turbine Exhaust Diffuser/Collector for a Series of Diffuser Strut Geometries

Song Xue, Stephen Guillot, Wing F. Ng, Jon Fleming, K. Todd Lowe, Nihar Samal, Ulrich E. Stang
Proc. ASME. GT2015, Volume 8: Microturbines, Turbochargers and Small Turbomachines; Steam Turbines, V008T26A010, June 15–19, 2015
Paper No: GT2015-42325
https://doi.org/10.1115/GT2015-42325
View Paper titled, An Experimental Investigation of the Performance Impact of Swirl on a Turbine Exhaust Diffuser/Collector for a Series of Diffuser Strut Geometries
Open the PDF for An Experimental Investigation of the Performance Impact of Swirl on a Turbine Exhaust Diffuser/Collector for a Series of Diffuser Strut Geometries in another window
Topics: Diffusers, Exhaust systems, Struts (Engineering), Turbines, Pressure, Flow (Dynamics), Engines, Flow visualization, Gas turbines, Geometry