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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
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

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
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

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
Journal Articles

Effect of Multiple Pulse Resistance Spot Welding Schedules on Liquid Metal Embrittlement Severity

E. Wintjes, C. DiGiovanni, L. He, S. Bag, F. Goodwin, E. Biro, Y. Zhou
Journal: Journal of Manufacturing Science and Engineering
Publisher: ASME
Article Type: Research-Article
J. Manuf. Sci. Eng. October 2019, 141(10): 101001.
Paper No: MANU-19-1221
https://doi.org/10.1115/1.4044099
Published Online: July 31, 2019
View Article titled, Effect of Multiple Pulse Resistance Spot Welding Schedules on Liquid Metal Embrittlement Severity
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Topics: Welding, Welded joints, Heat
Journal Articles

Experimental Evidence of Temperature Ratio Effect on Turbine Blade Tip Heat Transfer

H. Jiang, Q. Zhang, L. He, S. Lu, L. Wang, J. Teng
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. December 2018, 140(12): 121010.
Paper No: TURBO-18-1011
https://doi.org/10.1115/1.4041811
Published Online: November 28, 2018
View Article titled, Experimental Evidence of Temperature Ratio Effect on Turbine Blade Tip Heat Transfer
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Topics: Flow (Dynamics), Heat transfer, Temperature, Transients (Dynamics), Turbine blades, Heat flux, Clearances (Engineering)
Proceedings Papers

Fast Conjugate Heat Transfer Simulation of Long Transient Flexible Operations Using Adaptive Time Stepping

R. Maffulli, L. He, P. Stein, G. Marinescu
Proc. ASME. GT2018, Volume 5A: Heat Transfer, V05AT10A003, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75740
https://doi.org/10.1115/GT2018-75740
View Paper titled, Fast Conjugate Heat Transfer Simulation of Long Transient Flexible Operations Using Adaptive Time Stepping
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Topics: Heat transfer, Simulation, Transients (Dynamics), Cycles, Errors, Fluids, Turbines, Mixed convection, Modeling, Natural convection
Journal Articles

Fast Conjugate Heat Transfer Simulation of Long Transient Flexible Operations Using Adaptive Time Stepping

R. Maffulli, L. He, P. Stein, G. Marinescu
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. September 2018, 140(9): 091005.
Paper No: TURBO-18-1151
https://doi.org/10.1115/1.4040997
Published Online: August 28, 2018
View Article titled, Fast Conjugate Heat Transfer Simulation of Long Transient Flexible Operations Using Adaptive Time Stepping
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Topics: Annulus, Errors, Flow (Dynamics), Fluids, Heat transfer, Modeling, Natural convection, Simulation, Temperature, Transients (Dynamics)
Journal Articles

On Large Eddy Simulation Based Conjugate Heat Transfer Procedure for Transient Natural Convection

M. Fadl, L. He
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. November 2017, 139(11): 111010.
Paper No: TURBO-17-1086
https://doi.org/10.1115/1.4037492
Published Online: September 6, 2017
View Article titled, On Large Eddy Simulation Based Conjugate Heat Transfer Procedure for Transient Natural Convection
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Topics: Flow (Dynamics), Fluids, Heat transfer, Natural convection, Temperature, Transients (Dynamics), Wall temperature, Flux (Metallurgy), Heat, Turbulence
Proceedings Papers

Analysis of Aerothermal Characteristics of Surface Micro-Structures

M. Kapsis, L. He
Proc. ASME. GT2017, Volume 5C: Heat Transfer, V05CT21A002, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-63582
https://doi.org/10.1115/GT2017-63582
View Paper titled, Analysis of Aerothermal Characteristics of Surface Micro-Structures
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Topics: Additive manufacturing, Design, Drag (Fluid dynamics), Finishes, Flow (Dynamics), Heat transfer, Manufacturing technology, Modeling, Reynolds number, Separation (Technology)
Proceedings Papers

Assessment of Unsteadiness Modelling for Transient Natural Convection

M. Fadl, L. He, P. Stein, G. Marinescu
Proc. ASME. GT2017, Volume 8: Microturbines, Turbochargers and Small Turbomachines; Steam Turbines, V008T29A016, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-63592
https://doi.org/10.1115/GT2017-63592
View Paper titled, Assessment of Unsteadiness Modelling for Transient Natural Convection
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Topics: Modeling, Natural convection, Transients (Dynamics), Numerical stability, Stability, Cooling, Design, Flow (Dynamics), Heat conduction, Heat transfer
Proceedings Papers

On LES Based Conjugate Heat Transfer Procedure for Transient Natural Convection

M. Fadl, L. He
Proc. ASME. GT2017, Volume 5A: Heat Transfer, V05AT10A002, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-63600
https://doi.org/10.1115/GT2017-63600
View Paper titled, On LES Based Conjugate Heat Transfer Procedure for Transient Natural Convection
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Topics: Heat transfer, Natural convection, Transients (Dynamics), Fluids, Flow (Dynamics), Turbulence, Eddies (Fluid dynamics), Gas turbines, Modeling, Steam turbines
Journal Articles

Two-Scale Methodology for URANS/Large Eddy Simulation Solutions of Unsteady Turbomachinery Flows

L. He, J. Yi
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. October 2017, 139(10): 101012.
Paper No: TURBO-17-1001
https://doi.org/10.1115/1.4036765
Published Online: June 13, 2017
View Article titled, Two-Scale Methodology for URANS/Large Eddy Simulation Solutions of Unsteady Turbomachinery Flows
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Topics: Flow (Dynamics), Stress, Blades, Turbulence, Turbomachinery
Proceedings Papers

Cooling Injection Effect on a Transonic Squealer Tip: Part 1 — Experimental Heat Transfer Results and CFD Validation

H. Ma, Q. Zhang, L. He, Z. Wang, L. Wang
Proc. ASME. GT2016, Volume 5A: Heat Transfer, V05AT13A023, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-57579
https://doi.org/10.1115/GT2016-57579
View Paper titled, Cooling Injection Effect on a Transonic Squealer Tip: Part 1 — Experimental Heat Transfer Results and CFD Validation
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Topics: Computational fluid dynamics, Cooling, Heat transfer, Flow (Dynamics), Heat transfer coefficients, Blades, Cascades (Fluid dynamics), Cavities, Computer simulation, Coolants
Proceedings Papers

Cooling Injection Effect on a Transonic Squealer Tip: Part 2 — Analysis of Aerothermal Interaction Physics

H. Ma, Q. Zhang, L. He, Z. Wang, L. Wang
Proc. ASME. GT2016, Volume 5A: Heat Transfer, V05AT13A024, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-57587
https://doi.org/10.1115/GT2016-57587
View Paper titled, Cooling Injection Effect on a Transonic Squealer Tip: Part 2 — Analysis of Aerothermal Interaction Physics
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Topics: Cooling, Physics, Flow (Dynamics), Coolants, Blades, Cavities, Heat transfer, Computational fluid dynamics, Transonic flow, Vortex flow
Proceedings Papers

Investigation of Steady and Unsteady Film-Cooling Using Immersed Mesh Blocks With New Conservative Interface Scheme

Y. Jiang, L. He, L. Capone, E. Romero
Proc. ASME. GT2016, Volume 5C: Heat Transfer, V05CT12A007, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-57363
https://doi.org/10.1115/GT2016-57363
View Paper titled, Investigation of Steady and Unsteady Film-Cooling Using Immersed Mesh Blocks With New Conservative Interface Scheme
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Topics: Film cooling, Flow (Dynamics), Cooling, Blades, Design, High pressure (Physics), Modeling, Physics, Resolution (Optics), Turbines
Journal Articles

Space–Time Gradient Method for Unsteady Bladerow Interaction—Part II: Further Validation, Clocking, and Multidisturbance Effect

L. He, J. Yi, P. Adami, L. Capone
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. December 2015, 137(12): 121004.
Paper No: TURBO-15-1134
https://doi.org/10.1115/1.4031464
Published Online: September 23, 2015
View Article titled, Space–Time Gradient Method for Unsteady Bladerow Interaction—Part II: Further Validation, Clocking, and Multidisturbance Effect
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Topics: Blades, Rotors, Stators, Temperature, Turbines
Journal Articles

Space–Time Gradient Method for Unsteady Bladerow Interaction—Part I: Basic Methodology and Verification

J. Yi, L. He
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. November 2015, 137(11): 111008.
Paper No: TURBO-15-1144
https://doi.org/10.1115/1.4031342
Published Online: September 16, 2015
View Article titled, Space–Time Gradient Method for Unsteady Bladerow Interaction—Part I: Basic Methodology and Verification
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Topics: Blades, Flow (Dynamics), Rotors, Stators, Turbines, Spacetime, Entropy, Modeling