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Proceedings Papers

Improving a Two-Equation Eddy-Viscosity Turbulence Model for High-Rayleigh-Number Natural-Convection Flows Using Machine Learning

Ali Haghiri, Xiaowei Xu, Richard D. Sandberg, Koichi Tanimoto, Takuo Oda
Proc. ASME. GT2024, Volume 13: Heat Transfer: General Interest / Additive Manufacturing Impacts on Heat Transfer; Wind Energy, V013T13A003, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-121161
https://doi.org/10.1115/GT2024-121161
View Paper titled, Improving a Two-Equation Eddy-Viscosity Turbulence Model for High-Rayleigh-Number Natural-Convection Flows Using Machine Learning
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Topics: Eddies (Fluid dynamics), Flow (Dynamics), Machine learning, Modeling, Natural convection, Turbulence, Viscosity
Proceedings Papers

Modelling the Film Cooling of a Modern High-Pressure Turbine Nozzle Guide Vane in 3D CFD

Michael Müller, Robin Schöffler, Clemens Grunwitz, Christian Morsbach
Proc. ASME. GT2024, Volume 7: Heat Transfer: Combustors; Heat Transfer: Film Cooling, V007T12A031, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-126684
https://doi.org/10.1115/GT2024-126684
View Paper titled, Modelling the Film Cooling of a Modern High-Pressure Turbine Nozzle Guide Vane in 3D CFD
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Topics: Computational fluid dynamics, Film cooling, High pressure (Physics), Modeling, Nozzle guide vanes, Turbines, Cooling, Errors, Combustion chambers, Eddies (Fluid dynamics)
Proceedings Papers

RANS Prediction of Low-Pressure Turbine Tip Shroud Flows

Fatih Uncu, Benjamin François, Nicolas Buffaz, Sébastien Le Guyader
Proc. ASME. GT2024, Volume 12B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing, V12BT30A041, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-128691
https://doi.org/10.1115/GT2024-128691
View Paper titled, RANS Prediction of Low-Pressure Turbine Tip Shroud Flows
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Topics: Flow (Dynamics), Pressure, Reynolds-averaged Navier–Stokes equations, Turbines, Engineering simulation, Simulation, Geometry, Design, Eddies (Fluid dynamics), Engines
Proceedings Papers

Comparison of Ash Deposition Models in Gas Turbine Blade Rows for Alternative Solid Fuels With Low Ash Melting Temperatures

Luis Wunder, Daniel Bernhardt, Michael Beckmann
Proc. ASME. GT2024, Volume 12B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing, V12BT31A002, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-123617
https://doi.org/10.1115/GT2024-123617
View Paper titled, Comparison of Ash Deposition Models in Gas Turbine Blade Rows for Alternative Solid Fuels With Low Ash Melting Temperatures
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Topics: Blades, Fuels, Gas turbines, Melting, Slags, Temperature, Viscosity
Proceedings Papers

LES Modeling of High-Lift High-Work LP Turbine Profiles: Part I: Approach

Michael Ni, Ron-Ho Ni, John P. Clark
Proc. ASME. GT2023, Volume 13B: Turbomachinery — Axial Flow Turbine Aerodynamics, V13BT30A019, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-102625
https://doi.org/10.1115/GT2023-102625
View Paper titled, LES Modeling of High-Lift High-Work LP Turbine Profiles: Part I: Approach
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Topics: Modeling, Turbines, Reynolds number, Design, Flow (Dynamics), Turbulence, Engineering simulation, Physics, Pressure, Simulation
Proceedings Papers

Assessment of RANS Turbulence Models on Simplified Geometries Representative of Turbine Blade Tip Shroud Flow

Fatih Uncu, Benjamin François, Nicolas Buffaz, Sébastien Le Guyader
Proc. ASME. GT2022, Volume 10B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing; Radial Turbomachinery Aerodynamics, V10BT30A007, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-80681
https://doi.org/10.1115/GT2022-80681
View Paper titled, Assessment of RANS Turbulence Models on Simplified Geometries Representative of Turbine Blade Tip Shroud Flow
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Topics: Flow (Dynamics), Reynolds-averaged Navier–Stokes equations, Turbine blades, Turbulence, Blades, Eddies (Fluid dynamics), Engineering simulation, Kinetic energy, Pressure, Reynolds stress
Proceedings Papers

Calculating Windage Losses: A Review

Fernando Karg Bulnes, Thomas Kerr, Aaron Rimpel
Proc. ASME. GT2022, Volume 10C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V10CT33A016, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-82570
https://doi.org/10.1115/GT2022-82570
View Paper titled, Calculating Windage Losses: A Review
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Topics: Compressors, Density, Drag (Fluid dynamics), Fluids, High pressure (Physics), Machinery, Modeling, Reynolds number, Rotation, Rotors
Proceedings Papers

A Turbo-Oriented Data-Driven Modification to the Spalart-Allmaras Turbulence Model

Xiao He, Fanzhou Zhao, Mehdi Vahdati
Proc. ASME. GT2022, Volume 10C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V10CT32A008, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-80456
https://doi.org/10.1115/GT2022-80456
View Paper titled, A Turbo-Oriented Data-Driven Modification to the Spalart-Allmaras Turbulence Model
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Topics: Turbochargers, Turbulence, Compressors, Rotors, Flow (Dynamics), Corners (Structural elements), NASA, Pressure, Pressure gradient, Separation (Technology)
Proceedings Papers

Spray Characterization of a Preheated Bio-Oil Surrogate at Elevated Pressures

Mohsen Broumand, Murray J. Thomson, Sean Yun, Zekai Hong
Proc. ASME. GT2022, Volume 2: Coal, Biomass, Hydrogen, and Alternative Fuels; Controls, Diagnostics, and Instrumentation; Steam Turbine, V002T03A003, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-80430
https://doi.org/10.1115/GT2022-80430
View Paper titled, Spray Characterization of a Preheated Bio-Oil Surrogate at Elevated Pressures
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Topics: Sprays, Density, Drops, Fluids, Lasers, Momentum, Viscosity, Chemical reactions, Combustion, Computer simulation
Proceedings Papers

A Self-Sufficient Oil Cooling Mechanism for Fluid-Film Bearing Applications in Remote Operations

Seckin Gokaltun, Bruce R. Fabijonas, Louis S. Krajewski, Richard C. Rodzwic
Proc. ASME. GT2022, Volume 8A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction, V08AT22A019, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-83145
https://doi.org/10.1115/GT2022-83145
View Paper titled, A Self-Sufficient Oil Cooling Mechanism for Fluid-Film Bearing Applications in Remote Operations
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Topics: Bearings, Cooling, Fluid films, Cooling systems, Hydrocarbon reservoirs, Journal bearings, Heat exchangers, Lubrication, Pipes, Thrust bearings
Proceedings Papers

Theoretical Considerations for Scaling Convection in Overall Effectiveness Experiments

Carol E. Bryant, James L. Rutledge
Proc. ASME. GT2022, Volume 6A: Heat Transfer — Combustors; Film Cooling, V06AT12A015, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-81508
https://doi.org/10.1115/GT2022-81508
View Paper titled, Theoretical Considerations for Scaling Convection in Overall Effectiveness Experiments
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Topics: Computational fluid dynamics, Convection, Coolants, Density, Engineering simulation, Engines, Flow (Dynamics), Fluids, Gases, Heat transfer coefficients
Proceedings Papers

Describing the Mechanism of Instability Suppression Using a Central Pilot Flame With Coupled Experiments and Simulations

Jihang Li, Hyunguk Kwon, Drue Seksinsky, Daniel Doleiden, Jacqueline O’Connor, Yuan Xuan, Michel Akiki, James Blust
Proc. ASME. GT2021, Volume 3A: Combustion, Fuels, and Emissions, V03AT04A040, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-59117
https://doi.org/10.1115/GT2021-59117
View Paper titled, Describing the Mechanism of Instability Suppression Using a Central Pilot Flame With Coupled Experiments and Simulations
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Topics: Flames, Simulation, Combustion chambers, Oscillations, Combustion, Flow (Dynamics), Emissions, Gas turbines, Gases, Acoustics
Proceedings Papers

Hot-Wire Measurements in Non-Calibrated Conditions

Yuexin Wang, Tao Guo, Huiren Zhu
Proc. ASME. GT2021, Volume 4: Controls, Diagnostics, and Instrumentation; Cycle Innovations; Cycle Innovations: Energy Storage; Education; Electric Power, V004T05A007, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-59259
https://doi.org/10.1115/GT2021-59259
View Paper titled, Hot-Wire Measurements in Non-Calibrated Conditions
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Topics: Wire, Calibration, Forced convection, Pressure, Temperature, Errors, Flow (Dynamics), Heat transfer, Accuracy and precision, Computer simulation
Proceedings Papers

Convection in Scaled Turbine Internal Cooling Passages With Additive Manufacturing Roughness

Gabriel J. Stafford, Stephen T. McClain, David R. Hanson, Robert F. Kunz, Karen A. Thole
Proc. ASME. GT2021, Volume 5B: Heat Transfer — General Interest; Internal Air Systems; Internal Cooling, V05BT15A018, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-59684
https://doi.org/10.1115/GT2021-59684
View Paper titled, Convection in Scaled Turbine Internal Cooling Passages With Additive Manufacturing Roughness
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Topics: Additive manufacturing, Convection, Cooling, Surface roughness, Turbines, Aluminum, Friction, Compressibility, Computer numerical control machine tools, Drag (Fluid dynamics)
Proceedings Papers

Flow Physics in a Large Rotor Tip Gap in a Multi-Stage Axial Compressor

Chunill Hah
Proc. ASME. GT2021, Volume 2A: Turbomachinery — Axial Flow Fan and Compressor Aerodynamics, V02AT31A015, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-58745
https://doi.org/10.1115/GT2021-58745
View Paper titled, Flow Physics in a Large Rotor Tip Gap in a Multi-Stage Axial Compressor
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Topics: Compressors, Flow (Dynamics), Physics, Rotors, Eddies (Fluid dynamics), Viscosity, Pressure, Turbulence, Blades, Anisotropy
Proceedings Papers

Thermohydrodynamic Modeling of a Tapered-Land Thrust Bearing With Validation Against Experimental Data

Seckin Gokaltun
Proc. ASME. GT2021, Volume 9A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Design and Engineering, V09AT24A025, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-60203
https://doi.org/10.1115/GT2021-60203
View Paper titled, Thermohydrodynamic Modeling of a Tapered-Land Thrust Bearing With Validation Against Experimental Data
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Topics: Modeling, Thermohydrodynamics, Thrust bearings, Bearings, Stress, Fluid films, Heat transfer, Computational fluid dynamics, Deformation, Pressure
Proceedings Papers

Vortex Lattice Method for the Calculation of the Tip Leakage Flow: Evaluation on a Single Blade

Christophe Montsarrat, Benjamin Deveaux, Jérôme Boudet, Julien Marty, Eric Lippinois
Proc. ASME. GT2020, Volume 2A: Turbomachinery, V02AT32A034, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14899
https://doi.org/10.1115/GT2020-14899
View Paper titled, Vortex Lattice Method for the Calculation of the Tip Leakage Flow: Evaluation on a Single Blade
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Topics: Blades, Leakage flows, Vortices, Leakage, Flow (Dynamics), Computation, Pressure, Shapes, Viscosity
Proceedings Papers

Physical Mechanisms Investigation of Sharkskin-Inspired Compressor Cascade Based on Large Eddy Simulations

Zhihui Li, Juan Du, Hongwu Zhang
Proc. ASME. GT2020, Volume 2A: Turbomachinery, V02AT32A046, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-15209
https://doi.org/10.1115/GT2020-15209
View Paper titled, Physical Mechanisms Investigation of Sharkskin-Inspired Compressor Cascade Based on Large Eddy Simulations
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Topics: Cascades (Fluid dynamics), Compressors, Large eddy simulation, Flow (Dynamics), Turbulence, Vortices, Pressure, Computer simulation, Design, Drag reduction
Proceedings Papers

Large Eddy Simulation of a Transonic Linear Cascade With Synthetic Inlet Turbulence

Ettore Bertolini, Paul Pieringer, Wolfgang Sanz
Proc. ASME. GT2020, Volume 2C: Turbomachinery, V02CT35A007, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14461
https://doi.org/10.1115/GT2020-14461
View Paper titled, Large Eddy Simulation of a Transonic Linear Cascade With Synthetic Inlet Turbulence
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Topics: Cascades (Fluid dynamics), Large eddy simulation, Turbulence, Blades, Boundary layers, Engineering simulation, Flow (Dynamics), Heat transfer, Inflow, Reynolds-averaged Navier–Stokes equations
Proceedings Papers

Prediction of Tip Leakage Vortex Dynamics in an Axial Compressor Cascade Using RANS Analyses

Martina Ricci, Roberto Pacciani, Michele Marconcini, Andrea Arnone
Proc. ASME. GT2020, Volume 2C: Turbomachinery, V02CT35A021, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14797
https://doi.org/10.1115/GT2020-14797
View Paper titled, Prediction of Tip Leakage Vortex Dynamics in an Axial Compressor Cascade Using RANS Analyses
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Topics: Cascades (Fluid dynamics), Compressors, Dynamics (Mechanics), Leakage, Reynolds-averaged Navier–Stokes equations, Vortices, Blades, Design, Flow (Dynamics), Turbulence