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Proceedings Papers

Hysteresis and Bi-Stability in Transversely Excited Swirling Flows

Ravi Gupta, Rajat Gohiya, Chandan Vempati, Santosh Hemchandra, Pratikash Panda

Proc. ASME. GT2022, Volume 3A: Combustion, Fuels, and Emissions, V03AT04A025, June 13–17, 2022

Paper No: GT2022-80771

DOI: https://doi.org/10.1115/GT2022-80771

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Topics: Acoustics, Stability, Swirling flow

Journal Articles

Hysteresis and Bistability in Transversely Excited Swirling Flows

Ravi Gupta, Rajat Gohiya, Chandan Vempati, Santosh Hemchandra, Pratikash Panda

J. Eng. Gas Turbines Power. January 2023, 145(1): 011022.

Paper No: GTP-22-1392

DOI: https://doi.org/10.1115/1.4055669

Published Online: October 21, 2022

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Topics: Acoustics, Ejectors, Flow (Dynamics), Swirling flow, Combustion chambers, Excitation, Pressure

Journal Articles

Impact of a Centerbody on the Unsteady Flow Dynamics of a Swirl Nozzle: Intermittency of Precessing Vortex Core Oscillations

Saarthak Gupta, Santosh Shanbhogue, Masayasu Shimura, Ahmed Ghoniem, Santosh Hemchandra

J. Eng. Gas Turbines Power. February 2022, 144(2): 021014.

Paper No: GTP-21-1399

DOI: https://doi.org/10.1115/1.4052144

Published Online: November 8, 2021

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Topics: Flow (Dynamics), Oscillations, Principal component analysis, Wavelets, Nozzles, Vortices, Dynamics (Mechanics), Combustion chambers

Journal Articles

Impact of Hydrogen Addition on the Thermoacoustic Instability and Precessing Vortex Core Dynamics in a CH 4 /H 2 /Air Technically Premixed Combustor

Anindya Datta, Saarthak Gupta, Ianko Chterev, Isaac Boxx, Santosh Hemchandra

J. Eng. Gas Turbines Power. February 2022, 144(2): 021013.

Paper No: GTP-21-1391

DOI: https://doi.org/10.1115/1.4052202

Published Online: November 8, 2021

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Topics: Combustion chambers, Flames, Flow (Dynamics), Fuels, Methane, Oscillations, Vortices, Wavelets, Dynamics (Mechanics), Nozzles

Proceedings Papers

Impact of Hydrogen Addition on the Thermoacoustic Instability and Precessing Vortex Core Dynamics in a CH 4 /H 2 /air Technically Premixed Combustor

Anindya Datta, Saarthak Gupta, Santosh Hemchandra, Ianko Chterev, Isaac Boxx

Proc. ASME. GT2021, Volume 3A: Combustion, Fuels, and Emissions, V03AT04A018, June 7–11, 2021

Paper No: GT2021-58794

DOI: https://doi.org/10.1115/GT2021-58794

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Topics: Combustion chambers, Dynamics (Mechanics), Hydrogen, Methane, Vortices, Oscillations, Flames, Flow (Dynamics), Fuels, Nozzles

Proceedings Papers

Impact of a Centrebody on the Unsteady Flow Dynamics of A Swirl Nozzle: Intermittency of PVC Oscillations

Saarthak Gupta, Santosh Hemchandra, Masayasu Shimura, Santosh Shanbhogue, Ahmed Ghoniem

Proc. ASME. GT2021, Volume 3A: Combustion, Fuels, and Emissions, V03AT04A003, June 7–11, 2021

Paper No: GT2021-58358

DOI: https://doi.org/10.1115/GT2021-58358

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Topics: Dynamics (Mechanics), Nozzles, Oscillations, Unsteady flow, Flow (Dynamics), Vortices, Bubbles, Combustion chambers, Turbulence, Emissions

Journal Articles

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

J. Eng. Gas Turbines Power. May 2021, 143(5): 051019.

Paper No: GTP-20-1634

DOI: https://doi.org/10.1115/1.4050155

Published Online: March 15, 2021

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Topics: Flow (Dynamics), Nozzles, Stability, Vortices, Wakes, Combustion chambers

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

Paper No: GT2020-15777

DOI: https://doi.org/10.1115/GT2020-15777

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Topics: Dynamics (Mechanics), Nozzles, Vortices, Wakes, Flow (Dynamics), Bubbles, Combustion chambers, Hydrodynamic stability, Jets, Large eddy simulation

Journal Articles

Effects of Fuel Staging on the Hydrodynamic Stability of Multinozzle Swirl Flows

Saarthak Gupta, Kiran Manoharan, Santosh Hemchandra

J. Eng. Gas Turbines Power. October 2020, 142(10): 101010.

Paper No: GTP-19-1450

DOI: https://doi.org/10.1115/1.4045017

Published Online: September 29, 2020

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Topics: Flow (Dynamics), Fuels, Nozzles, Density, Hydrodynamic stability, Oscillations, Combustion chambers

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

Paper No: GT2019-91152

DOI: https://doi.org/10.1115/GT2019-91152

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Topics: Flow (Dynamics), Fuels, Hydrodynamic stability, Nozzles, Oscillations, Combustion chambers, Heat, Acoustics, Combustion, Density

Journal Articles

Influence of Nonaxisymmetric Confinement on the Hydrodynamic Stability of Multinozzle Swirl Flows

Harish G. Subramanian, Kiran Manoharan, Santosh Hemchandra

J. Eng. Gas Turbines Power. February 2019, 141(2): 021016.

Paper No: GTP-18-1410

DOI: https://doi.org/10.1115/1.4041080

Published Online: October 4, 2018

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Topics: Flow (Dynamics), Nozzles, Combustion chambers, Density, Hydrodynamic stability

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

Paper No: GT2018-76368

DOI: https://doi.org/10.1115/GT2018-76368

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Topics: Flow (Dynamics), Hydrodynamic stability, Nozzles, Combustion chambers, Flames, Oscillations, Stability, Acoustics, Density, Dynamics (Mechanics)

Journal Articles

Impact of Precessing Vortex Core Dynamics on Shear Layer Response in a Swirling Jet

Mark Frederick, Kiran Manoharan, Joshua Dudash, Brian Brubaker, Santosh Hemchandra, Jacqueline O'Connor

J. Eng. Gas Turbines Power. June 2018, 140(6): 061503.

Paper No: GTP-17-1429

DOI: https://doi.org/10.1115/1.4038324

Published Online: January 17, 2018

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Topics: Acoustics, Flow (Dynamics), Shear (Mechanics), Dynamics (Mechanics), Swirling flow, Vortices, Oscillations

Proceedings Papers

Velocity Field Response of a Forced Swirl Stabilized Premixed Flame

Kiran Manoharan, Travis Smith, Benjamin Emerson, Christopher M. Douglas, Tim Lieuwen, Santosh Hemchandra

Proc. ASME. GT2017, Volume 4A: Combustion, Fuels and Emissions, V04AT04A057, June 26–30, 2017

Paper No: GT2017-63936

DOI: https://doi.org/10.1115/GT2017-63936

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Topics: Flames, Flow (Dynamics), Oscillations, Combustion chambers, Acoustics, Heat, Shear (Mechanics), Gas turbines, Jets, Methane

Proceedings Papers

Impact of PVC Dynamics on Shear Layer Response in a Swirling Jet

Mark Frederick, Joshua Dudash, Jacqueline O’Connor, Kiran Manoharan, Santosh Hemchandra, Brian Brubaker

Proc. ASME. GT2017, Volume 4B: Combustion, Fuels and Emissions, V04BT04A036, June 26–30, 2017

Paper No: GT2017-64691

DOI: https://doi.org/10.1115/GT2017-64691

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Topics: Dynamics (Mechanics), Shear (Mechanics), Swirling flow, Acoustics, Combustion, Combustion chambers, Oscillations, Flames, Stability, 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

Paper No: GT2016-57322

DOI: https://doi.org/10.1115/GT2016-57322

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Topics: Combustion chambers, Oscillations, Pressure, Shear (Mechanics), Flow (Dynamics), Combustion, Acoustics, Density, Hydrodynamic stability, Sound pressure

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

Paper No: GT2015-42985

DOI: https://doi.org/10.1115/GT2015-42985

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Topics: Combustion chambers, Density, Flow (Dynamics), Vortices, Gas turbines, Combustion, Flames, Shear (Mechanics), Fuels, Hydrodynamic stability

Proceedings Papers

Impact of Flow Non-Axisymmetry on Swirling Flow Dynamics and Receptivity to Acoustics

Samuel Hansford, Jacqueline O’Connor, Kiran Manoharan, Santosh Hemchandra

Proc. ASME. GT2015, Volume 4B: Combustion, Fuels and Emissions, V04BT04A025, June 15–19, 2015

Paper No: GT2015-43377

DOI: https://doi.org/10.1115/GT2015-43377

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Topics: Acoustics, Dynamics (Mechanics), Flow (Dynamics), Swirling flow, Stability, Vortices, Combustion, Excitation, Flames, Flow measurement

Proceedings Papers

Absolute/Convective Instability Transition in a Backward Facing Step Combustor: Fundamental Mechanism and Influence of Density Gradient

Kiran Manoharan, Santosh Hemchandra

Proc. ASME. GT2014, Volume 4B: Combustion, Fuels and Emissions, V04BT04A033, June 16–20, 2014

Paper No: GT2014-26435

DOI: https://doi.org/10.1115/GT2014-26435

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Topics: Combustion chambers, Density, Flow (Dynamics), Hydrodynamic stability, Flames, Vorticity, Combustion, Shear (Mechanics), Flow instability, Fluctuations (Physics)

Journal Articles

Absolute/Convective Instability Transition in a Backward Facing Step Combustor: Fundamental Mechanism and Influence of Density Gradient

Kiran Manoharan, Santosh Hemchandra

J. Eng. Gas Turbines Power. February 2015, 137(2): 021501.

Paper No: GTP-14-1283

DOI: https://doi.org/10.1115/1.4028206

Published Online: September 4, 2014

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Topics: Combustion chambers, Density, Flames, Flow (Dynamics), Shear (Mechanics), Vorticity, Stability, Combustion

Journal citation

NARROW

Hysteresis and Bi-Stability in Transversely Excited Swirling Flows

Hysteresis and Bistability in Transversely Excited Swirling Flows

Impact of a Centerbody on the Unsteady Flow Dynamics of a Swirl Nozzle: Intermittency of Precessing Vortex Core Oscillations

Impact of Hydrogen Addition on the Thermoacoustic Instability and Precessing Vortex Core Dynamics in a CH 4 /H 2 /Air Technically Premixed Combustor

Impact of Hydrogen Addition on the Thermoacoustic Instability and Precessing Vortex Core Dynamics in a CH 4 /H 2 /air Technically Premixed Combustor

Impact of a Centrebody on the Unsteady Flow Dynamics of A Swirl Nozzle: Intermittency of PVC Oscillations

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

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

Effects of Fuel Staging on the Hydrodynamic Stability of Multinozzle Swirl Flows

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

Influence of Nonaxisymmetric Confinement on the Hydrodynamic Stability of Multinozzle Swirl Flows

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

Impact of Precessing Vortex Core Dynamics on Shear Layer Response in a Swirling Jet

Velocity Field Response of a Forced Swirl Stabilized Premixed Flame

Impact of PVC Dynamics on Shear Layer Response in a Swirling Jet

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

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

Impact of Flow Non-Axisymmetry on Swirling Flow Dynamics and Receptivity to Acoustics

Absolute/Convective Instability Transition in a Backward Facing Step Combustor: Fundamental Mechanism and Influence of Density Gradient

Absolute/Convective Instability Transition in a Backward Facing Step Combustor: Fundamental Mechanism and Influence of Density Gradient

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