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Journal Articles

The Effect of an Increasing Subglottal Stenosis Constriction That Extends From the Vocal Folds to the Inferior Border of the Cricoid Cartilage

Jacob Michaud-Dorko, Elias Sundström, Charles Farbos de Luzan, Ephraim Gutmark, Liran Oren
Journal: Journal of Biomechanical Engineering
Publisher: ASME
Article Type: Research-Article
J Biomech Eng. February 2024, 146(2): 021002.
Paper No: BIO-23-1124
https://doi.org/10.1115/1.4064029
Published Online: December 12, 2023
View Article titled, The Effect of an Increasing Subglottal Stenosis Constriction That Extends From the Vocal Folds to the Inferior Border of the Cricoid Cartilage
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Topics: Cartilage, Computational fluid dynamics, Flow (Dynamics), Geometry, Pressure, Surgery, Trachea, Turbulence, Pressure measurement, Air flow
Proceedings Papers

The Effects of High Centrifugal Acceleration on Bluff-Body Stabilized Premixed Flames

Timothy Erdmann, Ephraim Gutmark, Andrew Caswell
Proc. ASME. GT2022, Volume 3A: Combustion, Fuels, and Emissions, V03AT04A002, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-77975
https://doi.org/10.1115/GT2022-77975
View Paper titled, The Effects of High Centrifugal Acceleration on Bluff-Body Stabilized Premixed Flames
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Topics: Flames, Ducts, Flow (Dynamics), Pressure, Reynolds number, Static stability, Wakes, Arches, Pressure measurement, Shear (Mechanics)
Proceedings Papers

A Numerical Analysis of a Conical Swirl-Stabilized Spray Burner

Boris D. Stojkovic, Sumanta Acharya, Tim G. Morgan, Kevin J. Zanca, Michael J. Graf, Ephraim Gutmark
Proc. ASME. IMECE97, Heat Transfer: Volume 2, 109-118, November 16–21, 1997
Publisher: American Society of Mechanical Engineers
Paper No: IMECE1997-0873
https://doi.org/10.1115/IMECE1997-0873
View Paper titled, A Numerical Analysis of a Conical Swirl-Stabilized Spray Burner
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Topics: Numerical analysis, Sprays, Fuels, Drops, Computational fluid dynamics, Flames, Flow (Dynamics), Momentum, Shapes, Stability
Journal Articles

Influence of Material Model and Aortic Root Motion in Finite Element Analysis of Two Exemplary Cases of Proximal Aortic Dissection

Dhananjay Radhakrishnan Subramaniam, Ephraim Gutmark, Niels Andersen, Dorte Nielsen, Kristian Mortensen, Claus Gravholt, Philippe Backeljauw, Iris Gutmark-Little
Journal: Journal of Biomechanical Engineering
Publisher: ASME
Article Type: Technical Briefs
J Biomech Eng. January 2021, 143(1): 014504.
Paper No: BIO-20-1031
https://doi.org/10.1115/1.4048084
Published Online: October 8, 2020
View Article titled, Influence of Material Model and Aortic Root Motion in Finite Element Analysis of Two Exemplary Cases of Proximal Aortic Dissection
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Topics: Aorta, Finite element analysis, Pressure, Stress, Vessels, Biological tissues, Imaging, Aneurysms, Stress concentration
Journal Articles

Dependence of Film Cooling Effectiveness on Three-Dimensional Printed Cooling Holes

Paul Aghasi, Ephraim Gutmark, David Munday
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Research-Article
J. Heat Mass Transfer. October 2017, 139(10): 102003.
Paper No: HT-16-1577
https://doi.org/10.1115/1.4036509
Published Online: June 1, 2017
View Article titled, Dependence of Film Cooling Effectiveness on Three-Dimensional Printed Cooling Holes
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Topics: Film cooling, Flow (Dynamics), Surface roughness, Cooling, Coolants, Computer numerical control machine tools, Aluminum, Carbon dioxide, Discharge coefficient, Additive manufacturing
Proceedings Papers

Dependence of Film Cooling Effectiveness on 3D Printed Cooling Holes

Paul Aghasi, Ephraim Gutmark, David Munday
Proc. ASME. GT2016, Volume 5C: Heat Transfer, V05CT19A014, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-56698
https://doi.org/10.1115/GT2016-56698
View Paper titled, Dependence of Film Cooling Effectiveness on 3D Printed Cooling Holes
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Topics: Additive manufacturing, Cooling, Film cooling, Diffusers, Geometry, Surface roughness, Aluminum, Carbon dioxide, Coolants, Density
Journal Articles

Experimental Investigation of Flow Instability in a Turbocharger Ported Shroud Compressor

Erwann Guillou, Matthieu Gancedo, Ephraim Gutmark
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. June 2016, 138(6): 061002.
Paper No: TURBO-15-1153
https://doi.org/10.1115/1.4032360
Published Online: February 9, 2016
View Article titled, Experimental Investigation of Flow Instability in a Turbocharger Ported Shroud Compressor
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Topics: Compressors, Flow (Dynamics), Pressure, Surges, Turbochargers, Impellers
Proceedings Papers

Experimental Investigation of H 2 -Air Mixtures in a Rotating Detonation Combustor

Vijay Anand, Andrew St. George, Robert Driscoll, Ephraim Gutmark
Proc. ASME. GT2015, Volume 4B: Combustion, Fuels and Emissions, V04BT04A044, June 15–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: GT2015-43614
https://doi.org/10.1115/GT2015-43614
View Paper titled, Experimental Investigation of H 2 -Air Mixtures in a Rotating Detonation Combustor
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Topics: Combustion chambers, Explosions, Fuels, Waves, Orifices, Nozzles, Air flow, Pressure, Annulus, Combustion
Proceedings Papers

Optical Measurements of Interacting Lean Direct Injection Fuel Nozzles With Varying Spacing

Brian Dolan, Rodrigo Villalva Gomez, Ephraim Gutmark
Proc. ASME. GT2015, Volume 4B: Combustion, Fuels and Emissions, V04BT04A051, June 15–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: GT2015-43706
https://doi.org/10.1115/GT2015-43706
View Paper titled, Optical Measurements of Interacting Lean Direct Injection Fuel Nozzles With Varying Spacing
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Topics: Fuels, Nozzles, Optical measurement, Flow (Dynamics), Shear (Mechanics), Flames, Combustion, Combustion chambers, Air flow, Fluorescence
Proceedings Papers

Numerical Investigation of the Flow in a Coaxial Piping System

Charles Farbos de Luzan, Yuri Perelstein, Ephraim Gutmark, Thomas Frosell, Frederic Felten
Proc. ASME. FEDSM2014, Volume 1A, Symposia: Advances in Fluids Engineering Education; Turbomachinery Flow Predictions and Optimization; Applications in CFD; Bio-Inspired Fluid Mechanics; Droplet-Surface Interactions; CFD Verification and Validation; Development and Applications of Immersed Boundary Methods; DNS, LES, and Hybrid RANS/LES Methods, V01AT07A005, August 3–7, 2014
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2014-21600
https://doi.org/10.1115/FEDSM2014-21600
View Paper titled, Numerical Investigation of the Flow in a Coaxial Piping System
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Topics: Flow (Dynamics), Piping systems, Computational fluid dynamics, Annulus, Turbulence, Reynolds-averaged Navier–Stokes equations, Vortices, Erosion, Particulate matter, Steady state
Proceedings Papers

Experimental Study of Confined Turbulent Vortical Flow in a Narrow Annulus

Yuri Perelstein, Matthieu Gancedo, Charles Farbos de Luzan, Ephraim Gutmark, Thomas Frosell
Proc. ASME. FEDSM2014, Volume 2, Fora: Cavitation and Multiphase Flow; Fluid Measurements and Instrumentation; Microfluidics; Multiphase Flows: Work in Progress; Fluid-Particle Interactions in Turbulence, V002T11A006, August 3–7, 2014
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2014-21625
https://doi.org/10.1115/FEDSM2014-21625
View Paper titled, Experimental Study of Confined Turbulent Vortical Flow in a Narrow Annulus
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Topics: Annulus, Turbulence, Vortex flow, Flow (Dynamics), Computational fluid dynamics, Lasers, Calibration, Dimensions, Particulate matter, Polynomials
Proceedings Papers

Control of Combustion Driven Oscillations by Equivalence Ratio Modulations

Christian Oliver Paschereit, Ephraim Gutmark, Wolfgang Weisenstein
Proc. ASME. GT1999, Volume 2: Coal, Biomass and Alternative Fuels; Combustion and Fuels; Oil and Gas Applications; Cycle Innovations, V002T02A023, June 7–10, 1999
Publisher: American Society of Mechanical Engineers
Paper No: 99-GT-118
https://doi.org/10.1115/99-GT-118
View Paper titled, Control of Combustion Driven Oscillations by Equivalence Ratio Modulations
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Topics: Combustion, Oscillations, Emissions, Fuels, Pressure, Combustion chambers, Control systems, Heat, Acoustics, Boundary-value problems
Proceedings Papers

Bleed Slot Benefits on Turbocharger Centrifugal Compressor Stability

Matthieu Gancedo, Erwann Guillou, Ephraim Gutmark
Proc. ASME. GT2014, Volume 2D: Turbomachinery, V02DT42A044, June 16–20, 2014
Publisher: American Society of Mechanical Engineers
Paper No: GT2014-27185
https://doi.org/10.1115/GT2014-27185
View Paper titled, Bleed Slot Benefits on Turbocharger Centrifugal Compressor Stability
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Topics: Compressors, Stability, Turbochargers, Flow (Dynamics), Pressure, Surges, Pressure transducers, Resonance ionization spectroscopy, Diesel engines, Diffusers
Proceedings Papers

Flame Dynamics in a Multi-Nozzle Staged Combustor During High Power Operation

Brian Dolan, Rodrigo Villalva, David Munday, Gregory Zink, Spencer Pack, Ephraim Gutmark
Proc. ASME. GT2014, Volume 4B: Combustion, Fuels and Emissions, V04BT04A019, June 16–20, 2014
Publisher: American Society of Mechanical Engineers
Paper No: GT2014-26164
https://doi.org/10.1115/GT2014-26164
View Paper titled, Flame Dynamics in a Multi-Nozzle Staged Combustor During High Power Operation
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Topics: Combustion chambers, Dynamics (Mechanics), Flames, Nozzles, Oscillations, Fuels, Chemiluminescence, Emissions, Combustion, Principal component analysis
Proceedings Papers

Experimental Investigation of Flow Instability in a Turbocharger Ported Shroud Compressor

Matthieu Gancedo, Erwann Guillou, Ephraim Gutmark
Proc. ASME. GT2013, Volume 5A: Industrial and Cogeneration; Manufacturing Materials and Metallurgy; Marine; Microturbines, Turbochargers, and Small Turbomachines, V05AT23A021, June 3–7, 2013
Publisher: American Society of Mechanical Engineers
Paper No: GT2013-95134
https://doi.org/10.1115/GT2013-95134
View Paper titled, Experimental Investigation of Flow Instability in a Turbocharger Ported Shroud Compressor
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Topics: Compressors, Flow instability, Turbochargers, Flow (Dynamics), Surges, Impellers, Swirling flow, Pressure, Stability, Blades
Proceedings Papers

Simulation of Flow and Structural Dynamics in Human Upper Airways

Goutham Mylavarapu, Ephraim Gutmark, Mihai Mihaescu, Shanmugam Murugappan
Proc. ASME. SBC2010, ASME 2010 Summer Bioengineering Conference, Parts A and B, 653-654, June 16–19, 2010
Publisher: American Society of Mechanical Engineers
Paper No: SBC2010-19501
https://doi.org/10.1115/SBC2010-19501
View Paper titled, Simulation of Flow and Structural Dynamics in Human Upper Airways
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Topics: Accidents, Cardiovascular system, Failure, Flow (Dynamics), Health care, Simulation, Sleep, Structural dynamics, Surgery, Transportation systems
Proceedings Papers

Techniques for Supersonic Turbojet Noise Reduction

David Munday, Dan Cuppoletti, Michael Perrino, Ephraim Gutmark, Markus O. Burak, Lars-Erik Eriksson
Proc. ASME. GT2012, Volume 1: Aircraft Engine; Ceramics; Coal, Biomass and Alternative Fuels; Controls, Diagnostics and Instrumentation, 51-61, June 11–15, 2012
Publisher: American Society of Mechanical Engineers
Paper No: GT2012-68304
https://doi.org/10.1115/GT2012-68304
View Paper titled, Techniques for Supersonic Turbojet Noise Reduction
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Topics: Design, Engineering simulation, Flow (Dynamics), Mach number, Military aircraft, Noise (Sound), Noise control, Nozzles, Simulation, Turbojets
Journal Articles

Large Eddy Simulation of the Unsteady Flow in a Radial Compressor Operating Near Surge

Fredrik Hellstrom, Ephraim Gutmark, Laszlo Fuchs
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. September 2012, 134(5): 051006.
https://doi.org/10.1115/1.4003816
Published Online: May 8, 2012
View Article titled, Large Eddy Simulation of the Unsteady Flow in a Radial Compressor Operating Near Surge
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Topics: Compressors, Diffusers, Flow (Dynamics), Pressure, Wheels, Surges, Blades, Large eddy simulation, Geometry
Journal Articles

Supersonic Jet Noise Reduction Technologies for Gas Turbine Engines

David Munday, Nick Heeb, Ephraim Gutmark, Junhui Liu, K. Kailasanath
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research Papers
J. Eng. Gas Turbines Power. October 2011, 133(10): 101201.
https://doi.org/10.1115/1.4002914
Published Online: May 3, 2011
View Article titled, Supersonic Jet Noise Reduction Technologies for Gas Turbine Engines
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Topics: Acoustics, Flow (Dynamics), Jets, Noise control, Nozzles, Noise (Sound), Design, Gas turbines, Shear (Mechanics), Pressure
Proceedings Papers

Supersonic Jet Noise Reduction Using Fluidics, Mechanical Chevrons and Fluidically Enhanced Chevrons

David Munday, Nick Heeb, Ephraim Gutmark, Junhui Liu, K. Kailasanath
Proc. ASME. GT2010, Volume 1: Aircraft Engine; Ceramics; Coal, Biomass and Alternative Fuels; Education; Electric Power; Manufacturing Materials and Metallurgy, 401-409, June 14–18, 2010
Publisher: American Society of Mechanical Engineers
Paper No: GT2010-23715
https://doi.org/10.1115/GT2010-23715
View Paper titled, Supersonic Jet Noise Reduction Using Fluidics, Mechanical Chevrons and Fluidically Enhanced Chevrons
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Topics: Acoustic emissions, Acoustics, Design, Engineering simulation, Engines, Flow (Dynamics), Geometry, Jets, Large eddy simulation, Microphones