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Proceedings Papers

Numerical Study of Three Gaseous Fuels on the Reactor Length and Pollutant Formation Under Lean Gas Turbine Conditions

Bernhard Stiehl, Marcel Otto, Malcolm Newmyer, Max Fortin, Tommy Genova, Kareem Ahmed, Jayanta Kapat, Stefano Orsino, Carlo Arguinzoni
Proc. ASME. GT2022, Volume 3B: Combustion, Fuels, and Emissions, V03BT04A050, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-83343
https://doi.org/10.1115/GT2022-83343
View Paper titled, Numerical Study of Three Gaseous Fuels on the Reactor Length and Pollutant Formation Under Lean Gas Turbine Conditions
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Topics: Combustion chambers, Ejectors, Fuels, Gas turbines, Gaseous fuels, Large eddy simulation, Nitrogen oxides, Pollution, Turbines
Proceedings Papers

Interactions of Aerosol Droplets With Ventilated Airflows in the Context of Airborne Pathogen Transmission

Steven Schroeder, Bernhard Stiehl, Juanpablo Delgado, Rajendra Shrestha, Michael Kinzel, Kareem Ahmed
Proc. ASME. FEDSM2022, Volume 1: Fluid Applications and Systems (FASTC); Fluid Measurement and Instrumentation (FMITC); Fluid Mechanics (FMTC), V001T03A032, August 3–5, 2022
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2022-87739
https://doi.org/10.1115/FEDSM2022-87739
View Paper titled, Interactions of Aerosol Droplets With Ventilated Airflows in the Context of Airborne Pathogen Transmission
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Topics: Aerosols, Air flow, Drops, Density, Computational fluid dynamics, Visualization, Displacement, Flow (Dynamics), Particulate matter, Trajectories (Physics)
Proceedings Papers

On to Quantifying the Effect of Droplet Size Distribution on the Airborne Transmission of the Virus

Rajendra Shrestha, Juanpablo Delgado, Douglas Fontes, Bernhard Stiehl, Jonathan Reyes, Steven Schroeder, Kareem Ahmed, Michael Kinzel
Proc. ASME. FEDSM2022, Volume 2: Multiphase Flow (MFTC); Computational Fluid Dynamics (CFDTC); Micro and Nano Fluid Dynamics (MNFDTC), V002T05A025, August 3–5, 2022
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2022-87718
https://doi.org/10.1115/FEDSM2022-87718
View Paper titled, On to Quantifying the Effect of Droplet Size Distribution on the Airborne Transmission of the Virus
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Topics: Drops, Particulate matter, Food products, Aerosols, Computational fluid dynamics, Flow (Dynamics), Physics, Viscosity
Journal Articles

Flow-Independent Liquid Jet-in-Crossflow Injection Using Physical Obstructions

Charles R. Clark, Michael E. Tonarely, Anthony J. Morales, Jonathan Reyes, Kareem Ahmed
Journal: Journal of Energy Resources Technology
Publisher: ASME
Article Type: Research Papers
J. Energy Resour. Technol. October 2022, 144(10): 102106.
Paper No: JERT-21-2094
https://doi.org/10.1115/1.4053892
Published Online: March 18, 2022
View Article titled, Flow-Independent Liquid Jet-in-Crossflow Injection Using Physical Obstructions
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Topics: Flow (Dynamics), Trajectories (Physics), Combustion, Momentum
Journal Articles

Modal Analysis of Breakup Mechanisms for a Liquid Jet in Crossflow

Sheikh Salauddin, Wilmer Flores, Michelle Otero, Bernhard Stiehl, Kareem Ahmed
Journal: Journal of Energy Resources Technology
Publisher: ASME
Article Type: Research Papers
J. Energy Resour. Technol. March 2022, 144(3): 032103.
Paper No: JERT-21-1582
https://doi.org/10.1115/1.4052859
Published Online: December 14, 2021
View Article titled, Modal Analysis of Breakup Mechanisms for a Liquid Jet in Crossflow
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Topics: Flow (Dynamics), Fuels, Modal analysis, Momentum, Shear (Mechanics), Wavelength, Dynamics (Mechanics), Turbulence
Journal Articles

Carbon and Hydrocarbon Particle Seeding in Air-Breathing Rotating Detonation Engine

Robert F. Burke, Taha Rezzag, Kareem Ahmed
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. January 2022, 144(1): 011013.
Paper No: GTP-21-1382
https://doi.org/10.1115/1.4051987
Published Online: October 13, 2021
View Article titled, Carbon and Hydrocarbon Particle Seeding in Air-Breathing Rotating Detonation Engine
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Topics: Explosions, Particulate matter, Waves, Engines, Carbon
Proceedings Papers

A Kinematic Study of Individual Rotating Detonation Engine Waves Using K-means Algorithm

Taha Rezzag, Robert Burke, Kareem Ahmed
Proc. ASME. GT2021, Volume 3A: Combustion, Fuels, and Emissions, V03AT04A019, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-58814
https://doi.org/10.1115/GT2021-58814
View Paper titled, A Kinematic Study of Individual Rotating Detonation Engine Waves Using K-means Algorithm
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Topics: Algorithms, Engines, Explosions, Kinematics, Waves
Proceedings Papers

Localized Breakup Instabilities for a Liquid Jet in Crossflow

Sheikh Salauddin, Wilmer Flores, Michelle Otero, Kareem Ahmed
Proc. ASME. GT2021, Volume 3B: Combustion, Fuels, and Emissions, V03BT04A004, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-59421
https://doi.org/10.1115/GT2021-59421
View Paper titled, Localized Breakup Instabilities for a Liquid Jet in Crossflow
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Topics: Aviation, Flow (Dynamics), Fuels, Hydrodynamic stability, Momentum, Nonlinear dynamical systems, Principal component analysis, Rayleigh-Taylor instability, Resolution (Optics), Shear (Mechanics)
Journal Articles

Carbon-Based Multi-Phase Rotating Detonation Engine

Ian Dunn, Wilmer Flores, Anthony Morales, Vidhan Malik, Kareem Ahmed
Journal: Journal of Energy Resources Technology
Publisher: ASME
Article Type: Research Papers
J. Energy Resour. Technol. April 2022, 144(4): 042101.
Paper No: JERT-21-1265
https://doi.org/10.1115/1.4051540
Published Online: July 1, 2021
View Article titled, Carbon-Based Multi-Phase Rotating Detonation Engine
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Topics: Carbon, Explosions, Waves, Coal, Engines
Journal Articles

Fuel Stratification Influence on NO x Emission in a Premixed Axial Reacting Jet-in-Crossflow at High Pressure

Bernhard Stiehl, Tommy Genova, Michelle Otero, Scott Martin, Kareem Ahmed
Journal: Journal of Energy Resources Technology
Publisher: ASME
Article Type: Research Papers
J. Energy Resour. Technol. December 2021, 143(12): 122303.
Paper No: JERT-20-2044
https://doi.org/10.1115/1.4050052
Published Online: March 4, 2021
View Article titled, Fuel Stratification Influence on NO x Emission in a Premixed Axial Reacting Jet-in-Crossflow at High Pressure
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Topics: Combustion, Combustion chambers, Emissions, Flames, Fuels, Nitrogen oxides, Temperature, Methane, Computational fluid dynamics, Flow (Dynamics)
Journal Articles

The Effect of Pressure on NO x Entitlement and Reaction Timescales in a Premixed Axial Jet-In-Crossflow

Bernhard Stiehl, Michelle Otero, Tommy Genova, Scott Martin, Kareem Ahmed
Journal: Journal of Energy Resources Technology
Publisher: ASME
Article Type: Research Papers
J. Energy Resour. Technol. November 2021, 143(11): 112306.
Paper No: JERT-20-2043
https://doi.org/10.1115/1.4049609
Published Online: February 19, 2021
View Article titled, The Effect of Pressure on NO x Entitlement and Reaction Timescales in a Premixed Axial Jet-In-Crossflow
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Topics: Combustion, Combustion chambers, Computational fluid dynamics, Emissions, Flames, Nitrogen oxides, Pressure, Turbulence, High pressure (Physics), Temperature
Journal Articles

Partial Premixing Effects on the Reacting Jet of a High-Pressure Axially Staged Combustor

Tommy Genova, Michelle Otero, Jonathan Reyes, Scott Martin, Kareem Ahmed
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. March 2021, 143(3): 031006.
Paper No: GTP-20-1582
https://doi.org/10.1115/1.4049700
Published Online: February 8, 2021
View Article titled, Partial Premixing Effects on the Reacting Jet of a High-Pressure Axially Staged Combustor
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Topics: Combustion chambers, Flames, Flow (Dynamics), Fuels, High pressure (Physics), Emissions, Gas turbines, Jets, Chemiluminescence, Methane
Journal Articles

Simulation of Premixed and Partially Premixed Jet-in-Crossflow Flames at High Pressure

Bernhard Stiehl, Michelle Otero, Tommy Genova, Tyler Worbington, Jonathan Reyes, Scott Martin, Carlos Velez, Kareem Ahmed
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. March 2021, 143(3): 031001.
Paper No: GTP-20-1591
https://doi.org/10.1115/1.4049703
Published Online: February 8, 2021
View Article titled, Simulation of Premixed and Partially Premixed Jet-in-Crossflow Flames at High Pressure
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Topics: Computational fluid dynamics, Flames, Ignition, High pressure (Physics), Temperature, Combustion chambers, Simulation, Oxygen, Fuels, Combustion
Proceedings Papers

Partial Premixing Effects on the Reacting Jet of a High Pressure Axially Staged Combustor

Tommy Genova, Jr., Michelle Otero, Jonathan Reyes, Kareem Ahmed, Scott Martin
Proc. ASME. GT2020, Volume 4B: Combustion, Fuels, and Emissions, V04BT04A024, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-15760
https://doi.org/10.1115/GT2020-15760
View Paper titled, Partial Premixing Effects on the Reacting Jet of a High Pressure Axially Staged Combustor
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Topics: Combustion chambers, Emissions, High pressure (Physics), Flames, Fuels, Gas turbines, Methane, Chemiluminescence, Combustion, Ejectors
Proceedings Papers

Simulation of Premixed and Partially Premixed Jet-in-Crossflow Flames at High-Pressure

Bernhard Stiehl, Michelle Otero, Tommy Genova, Tyler Worbington, Jonathan Reyes, Kareem Ahmed, Scott Martin, Carlos Velez
Proc. ASME. GT2020, Volume 4B: Combustion, Fuels, and Emissions, V04BT04A038, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-16061
https://doi.org/10.1115/GT2020-16061
View Paper titled, Simulation of Premixed and Partially Premixed Jet-in-Crossflow Flames at High-Pressure
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Topics: Combustion, Combustion chambers, Flames, Gas turbines, High pressure (Physics), Simulation
Proceedings Papers

Multiphase Rotating Detonation Engine

Ian Dunn, Kareem Ahmed
Proc. ASME. GT2020, Volume 4A: Combustion, Fuels, and Emissions, V04AT04A055, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-15017
https://doi.org/10.1115/GT2020-15017
View Paper titled, Multiphase Rotating Detonation Engine
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Topics: Coal, Engines, Explosions
Proceedings Papers

Fluid Flow Characteristics of a Co-Flow Fluidic Slot Jet Thrust Augmentation Propulsion System

Brian Garrett, Kareem Ahmed
Proc. ASME. FEDSM2020, Volume 2: Fluid Mechanics; Multiphase Flows, V002T03A034, July 13–15, 2020
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2020-20006
https://doi.org/10.1115/FEDSM2020-20006
View Paper titled, Fluid Flow Characteristics of a Co-Flow Fluidic Slot Jet Thrust Augmentation Propulsion System
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Topics: Airfoils, Flow (Dynamics), Fluid dynamics, Jets, Propulsion systems, Thrust, Turbulence
Proceedings Papers

Combustion and Emission Characteristics of a Lean Axial-Stage Combustor

Bernhard Stiehl, Tyler Worbington, Alexander Miegel, Scott Martin, Carlos Velez, Kareem Ahmed
Proc. ASME. GT2019, Volume 4B: Combustion, Fuels, and Emissions, V04BT04A044, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-91796
https://doi.org/10.1115/GT2019-91796
View Paper titled, Combustion and Emission Characteristics of a Lean Axial-Stage Combustor
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Topics: Combustion, Combustion chambers, Emissions, Nitrogen oxides, Computational fluid dynamics, Flames, Flow (Dynamics), Pressure, Vortices, Chemical kinetics
Proceedings Papers

Adiabatic Film Cooling Effectiveness Measurement of High Performance Combustion Liner Slot Jets

Wilmer Flores, Andres Curbelo, Luisana Calderon, Jayanta S. Kapat, Kareem Ahmed
Proc. ASME. GT2019, Volume 5B: Heat Transfer, V05BT19A023, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-91783
https://doi.org/10.1115/GT2019-91783
View Paper titled, Adiabatic Film Cooling Effectiveness Measurement of High Performance Combustion Liner Slot Jets
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Topics: Combustion, Film cooling, Jets, Pressure, Absorption, Flow (Dynamics), Fracture (Materials), Fracture (Process), Geometry, Orifices
Proceedings Papers

First Demonstration of an Acousto-Optically Modulated Quantum Cascade Laser As a Broadband, Time-Resolved Combustion Diagnostic

Zachary E. Loparo, Kareem Ahmed, Subith S. Vasu, Andrey V. Muraviev, Pedro Figueiredo, Arkadiy Lyakh, Robert E. Peale
Proc. ASME. GT2018, Volume 4A: Combustion, Fuels, and Emissions, V04AT04A025, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75424
https://doi.org/10.1115/GT2018-75424
View Paper titled, First Demonstration of an Acousto-Optically Modulated Quantum Cascade Laser As a Broadband, Time-Resolved Combustion Diagnostic
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Topics: Cascades (Fluid dynamics), Combustion, Lasers, Temperature, Absorption spectroscopy, Emissions, Engineering simulation, Fourier transform infrared spectroscopy, Gas turbines, Heating