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Proceedings Papers

Global Stability and Forced Response Analysis of Swirling Flows in Aviation Combustors

Parth Patki, Benjamin Emerson, Timothy Lieuwen
Proc. ASME. GT2024, Volume 3A: Combustion, Fuels, and Emissions, V03AT04A008, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-121890
https://doi.org/10.1115/GT2024-121890
View Paper titled, Global Stability and Forced Response Analysis of Swirling Flows in Aviation Combustors
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Topics: Aviation, Combustion chambers, Hydrodynamic stability, Stability, Swirling flow
Proceedings Papers

The Onset of Hydrodynamic Instability in Dual Orifice Atomizers

Hıdır Yankı Kılıçgedik
Proc. ASME. GT2024, Volume 3A: Combustion, Fuels, and Emissions, V03AT04A055, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-125255
https://doi.org/10.1115/GT2024-125255
View Paper titled, The Onset of Hydrodynamic Instability in Dual Orifice Atomizers
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Topics: Deformation, Ejectors, Flow (Dynamics), Flow instability, Hydrodynamic stability, Large eddy simulation, Mathematical analysis, Nozzles, Pressure, Reynolds-averaged Navier–Stokes equations
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)
Proceedings Papers

Flow Response of an Industrial Gas Turbine Combustor To Acoustic Forcing Extracted From Unforced Data

Jan Paul Beuth, Jakob G. R. von Saldern, Thomas Ludwig Kaiser, Thoralf G. Reichel, Christian Oliver Paschereit, Bernhard Ćosić, Kilian Oberleithner
Proc. ASME. GT2021, Volume 3B: Combustion, Fuels, and Emissions, V03BT04A015, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-59718
https://doi.org/10.1115/GT2021-59718
View Paper titled, Flow Response of an Industrial Gas Turbine Combustor To Acoustic Forcing Extracted From Unforced Data
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Topics: Acoustics, Combustion chambers, Flow (Dynamics), Industrial gases, Turbines, Flames, Dynamics (Mechanics), Fluctuations (Physics), Combustion systems, Emissions
Proceedings Papers

Spectral Analysis of an Aeronautical Lean Direct Injection Burner Through Large Eddy Simulation

M. Carreres, L. M. García-Cuevas, J. García-Tíscar, M. Belmar-Gil
Proc. ASME. GT2020, Volume 2C: Turbomachinery, V02CT35A027, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14998
https://doi.org/10.1115/GT2020-14998
View Paper titled, Spectral Analysis of an Aeronautical Lean Direct Injection Burner Through Large Eddy Simulation
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Topics: Emission spectroscopy, Large eddy simulation, Spectroscopy, Swirling flow, Combustion chambers, Acoustics, Computational fluid dynamics, Flow (Dynamics), Combustion, Computer simulation
Proceedings Papers

The Role of the Centerbody Wake on the Precessing Vortex Core Dynamics of a Swirl Nozzle

Arnab Mukherjee, Nishanth Muthichur, Chaitali More, Saarthak Gupta, Santosh Hemchandra
Proc. ASME. GT2020, Volume 4B: Combustion, Fuels, and Emissions, V04BT04A025, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-15777
https://doi.org/10.1115/GT2020-15777
View Paper titled, The Role of the Centerbody Wake on the Precessing Vortex Core Dynamics of a Swirl Nozzle
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Topics: Dynamics (Mechanics), Nozzles, Vortices, Wakes, Flow (Dynamics), Bubbles, Combustion chambers, Hydrodynamic stability, Jets, Large eddy simulation
Proceedings Papers

Effects of Fuel Staging on the Hydrodynamic Stability of Multi Nozzle Swirl Flows

Saarthak Gupta, Kiran Manoharan, Santosh Hemchandra
Proc. ASME. GT2019, Volume 4B: Combustion, Fuels, and Emissions, V04BT04A012, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-91152
https://doi.org/10.1115/GT2019-91152
View Paper titled, Effects of Fuel Staging on the Hydrodynamic Stability of Multi Nozzle Swirl Flows
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Topics: Flow (Dynamics), Fuels, Hydrodynamic stability, Nozzles, Oscillations, Combustion chambers, Heat, Acoustics, Combustion, Density
Proceedings Papers

Control Strategies of an Academic Rotor/Stator Cavity Through Sensitivity Analysis

Matthieu Queguineur, Laurent Gicquel, Gabriel Staffelbach
Proc. ASME. GT2019, Volume 2A: Turbomachinery, V02AT45A008, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-90745
https://doi.org/10.1115/GT2019-90745
View Paper titled, Control Strategies of an Academic Rotor/Stator Cavity Through Sensitivity Analysis
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Topics: Cavities, Rotors, Sensitivity analysis, Stators, Flow (Dynamics), Stability, Turbomachinery, Actuators, Aerospace industry, Boundary layers
Proceedings Papers

Influence of Non-Axisymmetric Confinement on the Hydrodynamic Stability of Multi-Nozzle Swirl Flows

Harish G. Subramanian, Kiran Manoharan, Santosh Hemchandra
Proc. ASME. GT2018, Volume 4B: Combustion, Fuels, and Emissions, V04BT04A019, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-76368
https://doi.org/10.1115/GT2018-76368
View Paper titled, Influence of Non-Axisymmetric Confinement on the Hydrodynamic Stability of Multi-Nozzle Swirl Flows
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Topics: Flow (Dynamics), Hydrodynamic stability, Nozzles, Combustion chambers, Flames, Oscillations, Stability, Acoustics, Density, Dynamics (Mechanics)
Proceedings Papers

Measurements of Periodic Reynolds Stress Oscillations in a Forced Turbulent Premixed Swirling Flame

Christopher Douglas, Jamie Lim, Travis Smith, Benjamin Emerson, Timothy Lieuwen, Naibo Jiang, Christopher Fugger, Tongxun Yi, Joseph Felver, Sukesh Roy, James Gord
Proc. ASME. GT2018, Volume 4B: Combustion, Fuels, and Emissions, V04BT04A042, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-76914
https://doi.org/10.1115/GT2018-76914
View Paper titled, Measurements of Periodic Reynolds Stress Oscillations in a Forced Turbulent Premixed Swirling Flame
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Topics: Flames, Oscillations, Stress, Swirling flow, Turbulence, Acoustics, Combustion, Combustion chambers, Computational fluid dynamics, Convection
Proceedings Papers

Stability and Sensitivity Analysis of Hydrodynamic Instabilities in Industrial Swirled Injection Systems

Thomas L. Kaiser, Thierry Poinsot, Kilian Oberleithner
Proc. ASME. GT2017, Volume 4A: Combustion, Fuels and Emissions, V04AT04A043, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-63649
https://doi.org/10.1115/GT2017-63649
View Paper titled, Stability and Sensitivity Analysis of Hydrodynamic Instabilities in Industrial Swirled Injection Systems
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Topics: Hydrodynamic stability, Sensitivity analysis, Stability, Ejectors, Large eddy simulation, Flow (Dynamics), Mode shapes, Vortices, Geometry, Particulate matter
Proceedings Papers

Experimental Study of Transient Mechanisms of Bi-Stable Flame Shape Transitions in a Swirl Combustor

Michael Stöhr, Kilian Oberleithner, Moritz Sieber, Zhiyao Yin, Wolfgang Meier
Proc. ASME. GT2017, Volume 4B: Combustion, Fuels and Emissions, V04BT04A063, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-65003
https://doi.org/10.1115/GT2017-65003
View Paper titled, Experimental Study of Transient Mechanisms of Bi-Stable Flame Shape Transitions in a Swirl Combustor
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Topics: Combustion chambers, Flames, Shapes, Transients (Dynamics), Flow (Dynamics), Gas turbines, Hydrodynamic stability, Turbulence, Nozzles, Principal component analysis
Proceedings Papers

A Flow Starvation Model for Tilting Pad Journal Bearings and Evaluation of Frequency Response Functions: A Contribution Towards Understanding the Onset of Low Frequency Shaft Motions

Luis San Andrés, Bonjin Koo, Makoto Hemmi
Proc. ASME. GT2017, Volume 7A: Structures and Dynamics, V07AT34A030, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-64822
https://doi.org/10.1115/GT2017-64822
View Paper titled, A Flow Starvation Model for Tilting Pad Journal Bearings and Evaluation of Frequency Response Functions: A Contribution Towards Understanding the Onset of Low Frequency Shaft Motions
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Topics: Flow (Dynamics), Frequency response, Journal bearings, Bearings, Lubricants, Rotors, Stress, Damping, Lubrication, Fluids
Proceedings Papers

Control of the Precessing Vortex Core by Open and Closed-Loop Forcing in the Jet Core

Phoebe Kuhn, Jonas P. Moeck, Christian Oliver Paschereit, Kilian Oberleithner
Proc. ASME. GT2016, Volume 4B: Combustion, Fuels and Emissions, V04BT04A036, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-57686
https://doi.org/10.1115/GT2016-57686
View Paper titled, Control of the Precessing Vortex Core by Open and Closed-Loop Forcing in the Jet Core
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Topics: Vortices, Flow (Dynamics), Locks (Waterways), Oscillations, Actuators, Feedback, Jets, Signals, Wire, Bubbles
Proceedings Papers

Modeling Flame Describing Functions Based on Hydrodynamic Linear Stability Analysis

Kilian Oberleithner, Christian Oliver Paschereit
Proc. ASME. GT2016, Volume 4B: Combustion, Fuels and Emissions, V04BT04A009, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-57316
https://doi.org/10.1115/GT2016-57316
View Paper titled, Modeling Flame Describing Functions Based on Hydrodynamic Linear Stability Analysis
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Topics: Flames, Modeling, Stability, Combustion chambers, Flow (Dynamics), Fluctuations (Physics), Hydrodynamic stability, Acoustics, Combustion, Gas turbines
Proceedings Papers

Nonlinear Hydrodynamics of a Bluff-Body Stabilized Turbulent Premixed Flame

C. Y. Lee, R. S. Cant
Proc. ASME. GT2016, Volume 4B: Combustion, Fuels and Emissions, V04BT04A024, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-57492
https://doi.org/10.1115/GT2016-57492
View Paper titled, Nonlinear Hydrodynamics of a Bluff-Body Stabilized Turbulent Premixed Flame
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Topics: Flames, Hydrodynamics, Turbulence, Oscillations, Computational fluid dynamics, Limit cycles, Chaos, Combustion, Density, Flow (Dynamics)
Proceedings Papers

Role of Shear Layer Instability in Driving Pressure Oscillations in a Backward Facing Step Combustor

Srinivas K. Kirthy, Santosh Hemchandra, Seunghyuck Hong, Santosh Shanbhogue, Ahmed F. Ghoniem
Proc. ASME. GT2016, Volume 4B: Combustion, Fuels and Emissions, V04BT04A010, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-57322
https://doi.org/10.1115/GT2016-57322
View Paper titled, Role of Shear Layer Instability in Driving Pressure Oscillations in a Backward Facing Step Combustor
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Topics: Combustion chambers, Oscillations, Pressure, Shear (Mechanics), Flow (Dynamics), Combustion, Acoustics, Density, Hydrodynamic stability, Sound pressure
Proceedings Papers

Adjoint Sensitivity Analysis of Hydrodynamic Stability in a Gas Turbine Fuel Injector

Outi Tammisola, Matthew P. Juniper
Proc. ASME. GT2015, Volume 4A: Combustion, Fuels and Emissions, V04AT04A057, June 15–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: GT2015-42736
https://doi.org/10.1115/GT2015-42736
View Paper titled, Adjoint Sensitivity Analysis of Hydrodynamic Stability in a Gas Turbine Fuel Injector
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Topics: Fuel injectors, Gas turbines, Hydrodynamic stability, Sensitivity analysis, Oscillations, Flow (Dynamics), Stability, Combustion chambers, Ejectors, Acoustics
Proceedings Papers

Global and Local Hydrodynamic Stability Analysis as a Tool for Combustor Dynamics Modeling

Pedro Paredes, Vassilis Theofilis, Steffen Terhaar, Kilian Oberleithner, Christian Oliver Paschereit
Proc. ASME. GT2015, Volume 4B: Combustion, Fuels and Emissions, V04BT04A070, June 15–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: GT2015-44173
https://doi.org/10.1115/GT2015-44173
View Paper titled, Global and Local Hydrodynamic Stability Analysis as a Tool for Combustor Dynamics Modeling
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Topics: Combustion chambers, Dynamics (Mechanics), Hydrodynamic stability, Modeling, Flow (Dynamics), Combustion, Stability, Acoustics, Combustion systems, Flames
Proceedings Papers

Instability Mechanism in a Swirl Flow Combustor: Precession of Vortex Core and Influence of Density Gradient

Kiran Manoharan, Samuel Hansford, Jacqueline O’ Connor, Santosh Hemchandra
Proc. ASME. GT2015, Volume 4A: Combustion, Fuels and Emissions, V04AT04A073, June 15–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: GT2015-42985
https://doi.org/10.1115/GT2015-42985
View Paper titled, Instability Mechanism in a Swirl Flow Combustor: Precession of Vortex Core and Influence of Density Gradient
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Topics: Combustion chambers, Density, Flow (Dynamics), Vortices, Gas turbines, Combustion, Flames, Shear (Mechanics), Fuels, Hydrodynamic stability