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Proceedings Papers

Model for Local Cavitation Instabilities in 2-Bladed Turbopump Inducers

Youngkuk Yoon, Seung Jin Song
Proc. ASME. GT2024, Volume 12D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Radial Turbomachinery Aerodynamics; Unsteady Flows in Turbomachinery, V12DT36A028, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-129494
https://doi.org/10.1115/GT2024-129494
View Paper titled, Model for Local Cavitation Instabilities in 2-Bladed Turbopump Inducers
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Topics: Cavitation
Journal Articles

Impact of Low Freestream Turbulence and Surface Roughness on the Flat-Plate Boundary Layer Transition Under a High-Lift Airfoil Pressure Gradient

Heechan Jeong, Seung Jin Song
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. November 2024, 146(11): 111003.
Paper No: TURBO-23-1272
https://doi.org/10.1115/1.4065494
Published Online: May 23, 2024
View Article titled, Impact of Low Freestream Turbulence and Surface Roughness on the Flat-Plate Boundary Layer Transition Under a High-Lift Airfoil Pressure Gradient
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Topics: Boundary layers, Free stream turbulence, Surface roughness, Turbulence, Flat plates, Pressure gradient, Airfoils
Journal Articles

Swirl Enhancement Effect on Turbine Rim Seal Performance

Mingeun Choi, Bonhan Goo, GeonHwan Cho, Seung Jin Song
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. May 2024, 146(5): 051002.
Paper No: TURBO-23-1311
https://doi.org/10.1115/1.4064230
Published Online: December 21, 2023
View Article titled, Swirl Enhancement Effect on Turbine Rim Seal Performance
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Topics: Flow (Dynamics), Pressure, Sealing (Process), Turbines, Wheels, Rotors, Design, Gas turbines, Clearances (Engineering), Compressors
Proceedings Papers

Swirl Enhancement Effect on Turbine Rim Seal Performance

Mingeun Choi, Bonhan Goo, GeonHwan Cho, Seung Jin Song
Proc. ASME. GT2023, Volume 7B: Heat Transfer — General Interest/Additive Manufacturing Impacts on Heat Transfer; Internal Air Systems; Internal Cooling, V07BT14A003, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-101389
https://doi.org/10.1115/GT2023-101389
View Paper titled, Swirl Enhancement Effect on Turbine Rim Seal Performance
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Topics: Gas turbines, Sealing (Process), Turbines, Flow (Dynamics), Wheels, Pressure, Cycles, Clearances (Engineering), Compressors, Disks
Proceedings Papers

Aerodynamic Performance in a Turbine Cascade With Large Tip Clearance and Casing-Side Injection

Dunam Hong, Minsuk Choi, Myungho Kim, Seung Jin Song
Proc. ASME. GT2023, Volume 13B: Turbomachinery — Axial Flow Turbine Aerodynamics, V13BT30A012, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-102124
https://doi.org/10.1115/GT2023-102124
View Paper titled, Aerodynamic Performance in a Turbine Cascade With Large Tip Clearance and Casing-Side Injection
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Topics: Cascades (Fluid dynamics), Clearances (Engineering), Coolants, Turbines
Proceedings Papers

The Effect of Casing Coolant Injection on Aerodynamic Loss in a Linear Turbine Cascade With Tip Clearance

Dunam Hong, Minsuk Choi, Myungho Kim, Seung Jin Song
Proc. ASME. GT2022, Volume 10B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing; Radial Turbomachinery Aerodynamics, V10BT30A004, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-80252
https://doi.org/10.1115/GT2022-80252
View Paper titled, The Effect of Casing Coolant Injection on Aerodynamic Loss in a Linear Turbine Cascade With Tip Clearance
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Topics: Cascades (Fluid dynamics), Clearances (Engineering), Coolants, Turbines
Journal Articles

Periodic Unsteady Kinematics of Hub Flows in a Shrouded Multistage Compressor

Jaehyoung Lee, Sungkyung Lim, Hyoun-Woo Shin, Sungryong Lee, Seung Jin Song
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. April 2022, 144(4): 041011.
Paper No: GTP-21-1571
https://doi.org/10.1115/1.4053106
Published Online: January 21, 2022
View Article titled, Periodic Unsteady Kinematics of Hub Flows in a Shrouded Multistage Compressor
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Topics: Compressors, Flow (Dynamics), Rotors, Stators, Wakes, Corners (Structural elements), Separation (Technology), Vorticity
Proceedings Papers

Periodic Unsteady Kinematics of Hub Flows in a Shrouded Multistage Compressor

Jaehyoung Lee, Sungkyung Lim, Hyoun-Woo Shin, Sungryong Lee, Seung Jin Song
Proc. ASME. GT2021, Volume 2A: Turbomachinery — Axial Flow Fan and Compressor Aerodynamics, V02AT31A005, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-58551
https://doi.org/10.1115/GT2021-58551
View Paper titled, Periodic Unsteady Kinematics of Hub Flows in a Shrouded Multistage Compressor
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Topics: Compressors, Corners (Structural elements), Flow (Dynamics), Kinematics, Separation (Technology), Wakes
Proceedings Papers

Influence of Surface Roughness on the Flat-Plate Boundary Layer Transition Under a High-Lift Airfoil Pressure Gradient and Low Freestream Turbulence

Heechan Jeong, Seung Jin Song
Proc. ASME. GT2021, Volume 2B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing, V02BT32A006, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-59192
https://doi.org/10.1115/GT2021-59192
View Paper titled, Influence of Surface Roughness on the Flat-Plate Boundary Layer Transition Under a High-Lift Airfoil Pressure Gradient and Low Freestream Turbulence
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Topics: Airfoils, Boundary layers, Bubbles, Flat plates, Pressure gradient, Separation (Technology), Surface roughness, Turbulence
Journal Articles

Surface Roughness Impact on Boundary Layer Transition and Loss Mechanisms Over a Flat-Plate Under a Low-Pressure Turbine Pressure Gradient

Heechan Jeong, Seung Jin Song
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. January 2022, 144(1): 011005.
Paper No: TURBO-20-1298
https://doi.org/10.1115/1.4051937
Published Online: September 7, 2021
View Article titled, Surface Roughness Impact on Boundary Layer Transition and Loss Mechanisms Over a Flat-Plate Under a Low-Pressure Turbine Pressure Gradient
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Topics: Boundary layers, Surface roughness, Momentum, Turbulence, Shear stress, Turbines
Proceedings Papers

Non-Axisymmetric Flows and Rotordynamic Forces in an Eccentric Shrouded Centrifugal Compressor: Part 1 — Measurement

Jieun Song, Suyong Kim, Tae Choon Park, Bong-Jun Cha, Dong Hun Lim, Joo Sung Hong, Tae Wook Lee, Seung Jin Song
Proc. ASME. GT2019, Volume 7B: Structures and Dynamics, V07BT34A007, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-90237
https://doi.org/10.1115/GT2019-90237
View Paper titled, Non-Axisymmetric Flows and Rotordynamic Forces in an Eccentric Shrouded Centrifugal Compressor: Part 1 — Measurement
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Topics: Compressors, Flow (Dynamics), Stiffness, Pressure, Cavities, Pressure measurement
Proceedings Papers

Non-Axisymmetric Flows and Rotordynamic Forces in an Eccentric Shrouded Centrifugal Compressor: Part 2 — Analysis

Jieun Song, Seung Jin Song
Proc. ASME. GT2019, Volume 7B: Structures and Dynamics, V07BT34A018, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-90669
https://doi.org/10.1115/GT2019-90669
View Paper titled, Non-Axisymmetric Flows and Rotordynamic Forces in an Eccentric Shrouded Centrifugal Compressor: Part 2 — Analysis
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Topics: Compressors, Flow (Dynamics), Cavities, Pressure, Blades, Boundary-value problems, Impellers, Stiffness, Excitation, Geometry
Journal Articles

Non-Axisymmetric Flows and Rotordynamic Forces in an Eccentric Shrouded Centrifugal Compressor—Part 1: Measurement

Jieun Song, Suyong Kim, Tae Choon Park, Bong-Jun Cha, Dong Hun Lim, Joo Sung Hong, Tae Wook Lee, Seung Jin Song
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. November 2019, 141(11): 111014.
Paper No: GTP-19-1475
https://doi.org/10.1115/1.4044874
Published Online: October 16, 2019
View Article titled, Non-Axisymmetric Flows and Rotordynamic Forces in an Eccentric Shrouded Centrifugal Compressor—Part 1: Measurement
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Topics: Cavities, Compressors, Flow (Dynamics), Pressure, Stiffness, Rotors, Instrumentation
Journal Articles

Non-Axisymmetric Flows and Rotordynamic Forces in an Eccentric Shrouded Centrifugal Compressor—Part 2: Analysis

Jieun Song, Seung Jin Song
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. November 2019, 141(11): 111015.
Paper No: GTP-19-1477
https://doi.org/10.1115/1.4044875
Published Online: October 16, 2019
View Article titled, Non-Axisymmetric Flows and Rotordynamic Forces in an Eccentric Shrouded Centrifugal Compressor—Part 2: Analysis
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Topics: Blades, Cavities, Compressors, Flow (Dynamics), Pressure, Boundary-value problems, Momentum
Journal Articles

Visualization of Rotating Cavitation Oscillation Mechanism in a Turbopump Inducer

Junho Kim, Seung Jin Song
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. September 2019, 141(9): 091103.
Paper No: FE-18-1543
https://doi.org/10.1115/1.4042884
Published Online: March 18, 2019
View Article titled, Visualization of Rotating Cavitation Oscillation Mechanism in a Turbopump Inducer
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Topics: Cavitation, Blades, Vortices, Leakage, Oscillations
Journal Articles

Measurement of Transitional Surface Roughness Effects on Flat-Plate Boundary Layer Transition

Heechan Jeong, Seung Woo Lee, Seung Jin Song
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Technical Briefs
J. Fluids Eng. July 2019, 141(7): 074501.
Paper No: FE-18-1145
https://doi.org/10.1115/1.4042258
Published Online: January 14, 2019
View Article titled, Measurement of Transitional Surface Roughness Effects on Flat-Plate Boundary Layer Transition
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Topics: Boundary layers, Surface roughness, Turbulence, Flat plates, Momentum
Proceedings Papers

Influence of Flow Coefficient on the Unsteady Impeller Loading Induced by the Impeller-Diffuser Interaction

Dongjae Kong, Seung Jin Song
Proc. ASME. GT2018, Volume 2A: Turbomachinery, V02AT45A010, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75584
https://doi.org/10.1115/GT2018-75584
View Paper titled, Influence of Flow Coefficient on the Unsteady Impeller Loading Induced by the Impeller-Diffuser Interaction
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Topics: Diffusers, Flow (Dynamics), Impellers, Design, Simulation, Pressure, Engineering simulation, Blades, Fluctuations (Physics), Fourier transforms
Proceedings Papers

Unsteady Measurement of Core Penetration Flow in a Turbine Rotor-Stator Disc Cavity

You Il Kim, Seung Jin Song
Proc. ASME. GT2017, Volume 5B: Heat Transfer, V05BT15A020, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-64297
https://doi.org/10.1115/GT2017-64297
View Paper titled, Unsteady Measurement of Core Penetration Flow in a Turbine Rotor-Stator Disc Cavity
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Topics: Cavities, Disks, Flow (Dynamics), Rotors, Stators, Turbines, Annulus, Pressure, Air flow, Pressure gradient
Proceedings Papers

An Analytical Model of Flow-Induced Rotordynamic Forces in Shrouded Centrifugal Pump Impellers

Jieun Song, Seung Jin Song
Proc. ASME. GT2016, Volume 7A: Structures and Dynamics, V07AT30A009, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-57277
https://doi.org/10.1115/GT2016-57277
View Paper titled, An Analytical Model of Flow-Induced Rotordynamic Forces in Shrouded Centrifugal Pump Impellers
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Topics: Centrifugal pumps, Flow (Dynamics), Impellers, Stiffness, Pumps, Actuators, Blades, Disks, Ducts, Geometry
Journal Articles

Measurement of Temperature Effects on Cavitation in a Turbopump Inducer

Junho Kim, Seung Jin Song
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. January 2016, 138(1): 011304.
Paper No: FE-14-1462
https://doi.org/10.1115/1.4030842
Published Online: August 20, 2015
View Article titled, Measurement of Temperature Effects on Cavitation in a Turbopump Inducer
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Topics: Cavitation