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Journal Articles

Spectral Heat Transfer Coefficient (SHTC) for Thermal Design Analysis - Part 1: Augmenting the Cooling Law for Non-isothermal Wall

Accepted Manuscript
L. He
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach.
Paper No: TURBO-24-1159
https://doi.org/10.1115/1.4066671
Published Online: September 25, 2024
View Article titled, Spectral Heat Transfer Coefficient (SHTC) for Thermal Design Analysis - Part 1: Augmenting the Cooling Law for Non-isothermal Wall
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Topics: Cooling, Design, Heat transfer coefficients, Turbochargers, Temperature, Computational fluid dynamics, Flow (Dynamics), Film cooling, Heat, Heat transfer
Journal Articles

Spectral Heat Transfer Coefficient (SHTC) for Thermal Design Analysis - Part 2: Leveraging Diabatic Wall Conditioning for Nonlinear Regime

Accepted Manuscript
L. He
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach.
Paper No: TURBO-24-1160
https://doi.org/10.1115/1.4066672
Published Online: September 25, 2024
View Article titled, Spectral Heat Transfer Coefficient (SHTC) for Thermal Design Analysis - Part 2: Leveraging Diabatic Wall Conditioning for Nonlinear Regime
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Topics: Design, Heat transfer, Heat transfer coefficients, Turbochargers, Temperature, Computational fluid dynamics, Blades, Cooling, Diffusion (Physics), Film cooling
Journal Articles

Design Optimization of Blade Tip in Subsonic and Transonic Turbine Stages—Part I: Stage Design and Preliminary Tip Optimization

P. H. Duan, L. He
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. September 2024, 146(9): 091001.
Paper No: GTP-23-1578
https://doi.org/10.1115/1.4064325
Published Online: February 8, 2024
View Article titled, Design Optimization of Blade Tip in Subsonic and Transonic Turbine Stages—Part I: Stage Design and Preliminary Tip Optimization
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Topics: Blades, Design, Optimization, Parametrization, Turbines, Rotors, Flow (Dynamics), Stress, Heat
Journal Articles

Design Optimization of Blade Tip in Subsonic and Transonic Turbine Stages—Part II: Flow Physics and Augmented Aerothermal Integral Objective Function

P. H. Duan, L. He
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. September 2024, 146(9): 091002.
Paper No: GTP-23-1579
https://doi.org/10.1115/1.4064326
Published Online: February 8, 2024
View Article titled, Design Optimization of Blade Tip in Subsonic and Transonic Turbine Stages—Part II: Flow Physics and Augmented Aerothermal Integral Objective Function
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Topics: Blades, Cavities, Flow (Dynamics), Heat transfer, Optimization, Pressure, Turbines, Design, Platform supply vessels, Heat
Journal Articles

Impact of Wall Temperature on Aerothermal Characteristics of an Array of Surface Microstructures

D. Campanaro, L. He
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. February 2023, 145(2): 021203.
Paper No: FE-22-1270
https://doi.org/10.1115/1.4056036
Published Online: November 23, 2022
View Article titled, Impact of Wall Temperature on Aerothermal Characteristics of an Array of Surface Microstructures
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Topics: Boundary layers, Cooling, Flat plates, Flow (Dynamics), Heat transfer, Reynolds number, Turbulence, Wall temperature, Viscosity, Temperature
Proceedings Papers

Vortical Structures and Loss Mechanism of Tip Leakage Flow In Subsonic and Transonic Turbine Stages

P. H. Duan, L. He
Proc. ASME. GT2022, Volume 10B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing; Radial Turbomachinery Aerodynamics, V10BT30A032, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-83473
https://doi.org/10.1115/GT2022-83473
View Paper titled, Vortical Structures and Loss Mechanism of Tip Leakage Flow In Subsonic and Transonic Turbine Stages
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Topics: Leakage flows, Turbines, Flow (Dynamics), Cavities, Vortices, Leakage, Platform supply vessels, Pressure, Cascades (Fluid dynamics), Heat transfer
Proceedings Papers

Design Optimization of Blade Tip in Subsonic and Transonic Turbine Stages - Part I: Stage Design and Preliminary Tip Optimization

P. H. Duan, L. He
Proc. ASME. GT2022, Volume 10D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Turbomachinery General Interest; Unsteady Flows in Turbomachinery, V10DT34A020, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-83050
https://doi.org/10.1115/GT2022-83050
View Paper titled, Design Optimization of Blade Tip in Subsonic and Transonic Turbine Stages - Part I: Stage Design and Preliminary Tip Optimization
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Topics: Blades, Design, Optimization, Turbines, Flow (Dynamics), Rotors, Heat transfer, Mach number, Heat, Stress
Journal Articles

Investigation of Structurally and Aerodynamically Mistuned Oscillating Cascade Using Fully Coupled Method

H. M. Phan, L. He
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. March 2022, 144(3): 031009.
Paper No: GTP-21-1518
https://doi.org/10.1115/1.4052751
Published Online: December 7, 2021
View Article titled, Investigation of Structurally and Aerodynamically Mistuned Oscillating Cascade Using Fully Coupled Method
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Topics: Blades, Cascades (Fluid dynamics), Vibration, Oscillations
Journal Articles

A High-Speed Disk Rotor Rig Design for Tip Aerothermal Research

S. Lu, Q. Zhang, L. He
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. May 2022, 144(5): 051002.
Paper No: TURBO-21-1082
https://doi.org/10.1115/1.4052603
Published Online: November 15, 2021
View Article titled, A High-Speed Disk Rotor Rig Design for Tip Aerothermal Research
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Topics: Design, Disks, Rotors, Computational fluid dynamics, Flow (Dynamics), Mach number, Cascades (Fluid dynamics), Heat transfer
Proceedings Papers

Investigation of Mistuned Oscillating Cascade Using Fully-Coupled Method

H. M. Phan, L. He
Proc. ASME. GT2021, Volume 9A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Design and Engineering, V09AT23A009, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-59124
https://doi.org/10.1115/GT2021-59124
View Paper titled, Investigation of Mistuned Oscillating Cascade Using Fully-Coupled Method
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Topics: Cascades (Fluid dynamics), Oscillations, Blades, Flutter (Aerodynamics), Damping, Dynamics (Mechanics), Fluid structure interaction, Inspection, Signals, Simulation
Journal Articles

Optimization of Turbine Cascade Squealer Tip Cooling Design by Combining Shaping and Flow Injection

P. H. Duan, L. He
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. November 2021, 143(11): 111007.
Paper No: TURBO-21-1023
https://doi.org/10.1115/1.4051204
Published Online: June 15, 2021
View Article titled, Optimization of Turbine Cascade Squealer Tip Cooling Design by Combining Shaping and Flow Injection
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Topics: Cooling, Design, Flow (Dynamics), Optimization, Turbines, Heat transfer, Cavities, Coolants, Blades
Journal Articles

Efficient Steady and Unsteady Flow Modeling for Arbitrarily Mis-Staggered Bladerow Under Influence of Inlet Distortion

H. M. Phan, L. He
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. July 2021, 143(7): 071009.
Paper No: GTP-21-1007
https://doi.org/10.1115/1.4050364
Published Online: March 29, 2021
View Article titled, Efficient Steady and Unsteady Flow Modeling for Arbitrarily Mis-Staggered Bladerow Under Influence of Inlet Distortion
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Topics: Blades, Computation, Flow (Dynamics), Inflow, Unsteady flow, Simulation, Pressure, Resolution (Optics), Modeling, Annulus
Journal Articles

Averaging for High Fidelity Modeling—Toward Large Eddy Simulations in Multi-Passage Multi-Row Configurations

L. He
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. February 2021, 143(2): 021002.
Paper No: TURBO-20-1210
https://doi.org/10.1115/1.4049616
Published Online: February 1, 2021
View Article titled, Averaging for High Fidelity Modeling—Toward Large Eddy Simulations in Multi-Passage Multi-Row Configurations
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Topics: Blades, Flow (Dynamics), Modeling, Resolution (Optics), Spacetime, Turbomachinery, Turbulence, Large eddy simulation
Proceedings Papers

Averaging for High Fidelity Modelling: Towards Large Eddy Simulations in Multi-Passage Multi-Row Configurations

L. He
Proc. ASME. GT2020, Volume 2C: Turbomachinery, V02CT35A030, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-15157
https://doi.org/10.1115/GT2020-15157
View Paper titled, Averaging for High Fidelity Modelling: Towards Large Eddy Simulations in Multi-Passage Multi-Row Configurations
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Topics: Blades, Computation, Flow (Dynamics), Flow simulation, Large eddy simulation, Modeling, Resolution (Optics), Scalars, Spacetime, Turbomachinery
Proceedings Papers

A High-Speed Disk Rotor Rig Design for Tip Aerothermal Research

S. Lu, Q. Zhang, L. He
Proc. ASME. GT2020, Volume 7C: Heat Transfer, V07CT13A012, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14624
https://doi.org/10.1115/GT2020-14624
View Paper titled, A High-Speed Disk Rotor Rig Design for Tip Aerothermal Research
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Topics: Design, Disks, Rotors, Cascades (Fluid dynamics), Flow (Dynamics), Belts, Computational fluid dynamics, Engines, Heat transfer, Leakage
Proceedings Papers

Optimization of Turbine Squealer Tip Cooling Design by Combining Shaping and Flow Injection

P. H. Duan, L. He
Proc. ASME. GT2020, Volume 7C: Heat Transfer, V07CT13A018, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-15116
https://doi.org/10.1115/GT2020-15116
View Paper titled, Optimization of Turbine Squealer Tip Cooling Design by Combining Shaping and Flow Injection
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Topics: Cooling, Design, Flow (Dynamics), Optimization, Turbines, Coolants, Film cooling, Heat transfer, Leakage, Leakage flows
Journal Articles

Application of Multiscale Methodology for Transonic Turbine Blade Tip Cooling Design

P. H. Duan, L. He
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. August 2020, 142(8): 081011.
Paper No: TURBO-20-1010
https://doi.org/10.1115/1.4046462
Published Online: July 29, 2020
View Article titled, Application of Multiscale Methodology for Transonic Turbine Blade Tip Cooling Design
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Topics: Cooling, Design, Flow (Dynamics), Turbine blades, Heat transfer, Blades, Resolution (Optics), Turbines
Journal Articles

Validation Studies of Linear Oscillating Compressor Cascade and Use of Influence Coefficient Method

H. M. Phan, L. He
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. May 2020, 142(5): 051005.
Paper No: TURBO-19-1211
https://doi.org/10.1115/1.4045657
Published Online: April 9, 2020
View Article titled, Validation Studies of Linear Oscillating Compressor Cascade and Use of Influence Coefficient Method
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Topics: Blades, Cascades (Fluid dynamics), Clearances (Engineering), Damping, Pressure, Suction, Boundary layers, Flow (Dynamics), Compressors, Turbulence
Journal Articles

On the Validity of Scaling Transient Conjugate Heat Transfer Characteristics

R. Maffulli, G. Marinescu, L. He
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. March 2020, 142(3): 031021.
Paper No: GTP-19-1542
https://doi.org/10.1115/1.4045868
Published Online: February 5, 2020
View Article titled, On the Validity of Scaling Transient Conjugate Heat Transfer Characteristics
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Topics: Fluids, Heat transfer, Rotors, Steam turbines, Stress, Temperature, Transients (Dynamics), Specific heat, Flow (Dynamics), Multiscale modeling
Journal Articles

Implicit Discontinuous Galerkin Solution on Unstructured Mesh for Turbine Blade Secondary Flow

M. Yao, L. He
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. January 2020, 142(1): 011004.
Paper No: TURBO-18-1330
https://doi.org/10.1115/1.4045551
Published Online: December 14, 2019
View Article titled, Implicit Discontinuous Galerkin Solution on Unstructured Mesh for Turbine Blade Secondary Flow
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Topics: Cascades (Fluid dynamics), Flow (Dynamics), Reynolds-averaged Navier–Stokes equations, Turbines, Turbulence, Cylinders, Separation (Technology), Boundary layers, Pressure, Blades