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Proceedings Papers

Effects of Localized Non-Gaussian Roughness on High Pressure Turbine Aero-Thermal Performance: Convective Heat Transfer, Skin-Friction and the Reynolds’ Analogy

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Thomas O. Jelly, Massimiliano Nardini, Richard D. Sandberg, Paul Vitt, Greg Sluyter
Proc. ASME. GT2024, Volume 13: Heat Transfer: General Interest / Additive Manufacturing Impacts on Heat Transfer; Wind Energy, V013T13A005, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-121839
https://doi.org/10.1115/GT2024-121839
View Paper titled, Effects of Localized Non-Gaussian Roughness on High Pressure Turbine Aero-Thermal Performance: Convective Heat Transfer, Skin-Friction and the Reynolds’ Analogy
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Topics: Convection, Heat transfer, High pressure (Physics), Skin friction (Fluid dynamics), Surface roughness, Turbines
Proceedings Papers

Performance of Rough-Ribbed Low-Pressure Turbine Blades Under Varying Loading and Operating Conditions

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Ananth S. M., Massimiliano Nardini, Melissa Kozul, Nagabhushana Rao Vadlamani, Richard D. Sandberg
Proc. ASME. GT2024, Volume 12B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing, V12BT30A039, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-127998
https://doi.org/10.1115/GT2024-127998
View Paper titled, Performance of Rough-Ribbed Low-Pressure Turbine Blades Under Varying Loading and Operating Conditions
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Topics: Pressure, Surface roughness, Turbine blades, Design, Skin friction (Fluid dynamics), Blades, Boundary layers, Flow (Dynamics), Turbulence, Bubbles
Proceedings Papers

High-Fidelity Computational Assessment of Aero-Thermal Performance and the Reynolds’ Analogy for Additively Manufactured Anisotropic Surface Roughness

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Thomas O. Jelly, Wagih Abu Rowin, Nicholas Hutchins, Daniel Chung, Koichi Tanimoto, Takuo Oda, Richard D. Sandberg
Proc. ASME. GT2023, Volume 7B: Heat Transfer — General Interest/Additive Manufacturing Impacts on Heat Transfer; Internal Air Systems; Internal Cooling, V07BT13A005, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-102138
https://doi.org/10.1115/GT2023-102138
View Paper titled, High-Fidelity Computational Assessment of Aero-Thermal Performance and the Reynolds’ Analogy for Additively Manufactured Anisotropic Surface Roughness
Open the PDF for High-Fidelity Computational Assessment of Aero-Thermal Performance and the Reynolds’ Analogy for Additively Manufactured Anisotropic Surface Roughness in another window
Topics: Additive manufacturing, Anisotropy, Heat transfer, Surface roughness, Turbulence, Flow (Dynamics), Pressure, Channel flow, Computational fluid dynamics, Computer simulation
Proceedings Papers

Effects of Riblet Dimensions on the Transitional Boundary Layers Over High-Lift Turbine Blades

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S. M. Ananth, Massimiliano Nardini, Aditya Vaid, Melissa Kozul, Nagabhushana Rao Vadlamani, Richard D. Sandberg
Proc. ASME. GT2023, Volume 13B: Turbomachinery — Axial Flow Turbine Aerodynamics, V13BT30A036, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-103536
https://doi.org/10.1115/GT2023-103536
View Paper titled, Effects of Riblet Dimensions on the Transitional Boundary Layers Over High-Lift Turbine Blades
Open the PDF for Effects of Riblet Dimensions on the Transitional Boundary Layers Over High-Lift Turbine Blades in another window
Topics: Boundary layers, Dimensions, Turbine blades, Surface roughness, Blades, Skin friction (Fluid dynamics), Bubbles, Drag (Fluid dynamics), Flow (Dynamics), Separation (Technology)
Proceedings Papers

The Modelling of Roughness Effect on the Performance of a Controlled Diffusion Airfoil

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Grégory Delvaux, Riccardo Toracchio, Elissavet Boufidi, Emma Croner, Fabrizio Fontaneto
Proc. ASME. GT2022, Volume 10A: Turbomachinery — Axial Flow Fan and Compressor Aerodynamics, V10AT29A005, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-79522
https://doi.org/10.1115/GT2022-79522
View Paper titled, The Modelling of Roughness Effect on the Performance of a Controlled Diffusion Airfoil
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Topics: Airfoils, Diffusion (Physics), Modeling, Surface roughness, Boundary layer turbulence, Blades, Finishes, Flow (Dynamics), Mach number, Manufacturing
Proceedings Papers

Profile Loss Reduction of High Lift Turbine Blades With Rough and Ribbed Surfaces

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S. M. Ananth, Massimiliano Nardini, Aditya Vaid, Richard D. Sandberg, Nagabhushana Rao Vadlamani
Proc. ASME. GT2022, Volume 10B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing; Radial Turbomachinery Aerodynamics, V10BT30A026, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-82558
https://doi.org/10.1115/GT2022-82558
View Paper titled, Profile Loss Reduction of High Lift Turbine Blades With Rough and Ribbed Surfaces
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Topics: Surface roughness, Turbine blades, Blades, Turbulence, Boundary layers, Pressure gradient, Separation (Technology), Suction, Boundary layer turbulence, Bubbles
Proceedings Papers

A Framework for Estimating Effects of Combustor Turbulence on Turbine Profile Loss Generation

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Kanika Gakhar, Masha Folk, Edward M. Greitzer, Choon S. Tan
Proc. ASME. GT2022, Volume 10B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing; Radial Turbomachinery Aerodynamics, V10BT30A006, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-80607
https://doi.org/10.1115/GT2022-80607
View Paper titled, A Framework for Estimating Effects of Combustor Turbulence on Turbine Profile Loss Generation
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Topics: Combustion chambers, Turbines, Turbulence, High pressure (Physics), Energy dissipation, Aircraft engines, Boundary layer turbulence, Boundary layers, Gas turbines, Gates (Closures)
Proceedings Papers

Flow Visualization Study From a Flat Plate With Multiple Impinging Jets for Different Cross-Flow Schemes

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Radheesh Dhanasegaran, Ssheshan Pugazhendhi
Proc. ASME. GT2022, Volume 6B: Heat Transfer — General Interest/Additive Manufacturing Impacts on Heat Transfer; Internal Air Systems; Internal Cooling, V06BT15A017, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-82152
https://doi.org/10.1115/GT2022-82152
View Paper titled, Flow Visualization Study From a Flat Plate With Multiple Impinging Jets for Different Cross-Flow Schemes
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Topics: Cross-flow, Flat plates, Flow visualization, Jets, Heat transfer, Separation (Technology), Flow (Dynamics), Reynolds number, Skin friction (Fluid dynamics), Turbulence
Proceedings Papers

Free-Stream Turbulence Induced Boundary-Layer Transition in Low-Pressure Turbines

Open Access

Kristina Ðurović, Luca De Vincentiis, Daniele Simoni, Davide Lengani, Jan Pralits, Dan S. Henningson, Ardeshir Hanifi
Proc. ASME. GT2020, Volume 2E: Turbomachinery, V02ET41A036, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-15808
https://doi.org/10.1115/GT2020-15808
View Paper titled, Free-Stream Turbulence Induced Boundary-Layer Transition in Low-Pressure Turbines
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Topics: Boundary layers, Pressure, Turbines, Turbulence, Blades, Flow (Dynamics), Suction, Boundary-value problems, Bubbles, Cascades (Fluid dynamics)
Proceedings Papers

Aero-Thermal Optimization of Bladeless Turbines

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James Braun, Guillermo Paniagua, Francois Falempin
Proc. ASME. GT2020, Volume 5: Controls, Diagnostics, and Instrumentation; Cycle Innovations; Cycle Innovations: Energy Storage, V005T06A024, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-15551
https://doi.org/10.1115/GT2020-15551
View Paper titled, Aero-Thermal Optimization of Bladeless Turbines
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Topics: Optimization, Turbines, Pressure, Geometry, Heat, Heat flux, Turbulence, Blades, Flux (Metallurgy), Mesh generation
Proceedings Papers

The Effects of Incidence and Deviation on the CFD-Based Throughflow Analysis

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Jian Li, Dongrun Wu, Jinfang Teng, Mingmin Zhu, Xiaoqing Qiang
Proc. ASME. GT2020, Volume 2A: Turbomachinery, V02AT32A010, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14293
https://doi.org/10.1115/GT2020-14293
View Paper titled, The Effects of Incidence and Deviation on the CFD-Based Throughflow Analysis
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Topics: Blades, Computational fluid dynamics, Pressure, Compressors, Design, Flow (Dynamics), Genetic algorithms, NASA, Navier-Stokes equations, Optimization
Proceedings Papers

Near Wall Resolution Requirements for High-Order FR/CPR Method for Wall-Resolved Large Eddy Simulations

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Rathakrishnan Bhaskaran, Gustavo Ledezma
Proc. ASME. GT2020, Volume 2C: Turbomachinery, V02CT35A006, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14432
https://doi.org/10.1115/GT2020-14432
View Paper titled, Near Wall Resolution Requirements for High-Order FR/CPR Method for Wall-Resolved Large Eddy Simulations
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Topics: Large eddy simulation, Resolution (Optics), Turbulence, Polynomials, Boundary layers, Computer simulation, Engineering simulation, Flat plates, Flow (Dynamics), Simulation
Proceedings Papers

Aeroacoustical and Aerodynamical Investigations of Riblets Applied on Low Pressure Turbine Exit Guide Vanes for Two Different Operating Points

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M. Zenz, A. Hafizovic, L. Simonassi, P. Leitl, F. Heitmeir, A. Marn
Proc. ASME. GT2019, Volume 2B: Turbomachinery, V02BT43A001, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-90283
https://doi.org/10.1115/GT2019-90283
View Paper titled, Aeroacoustical and Aerodynamical Investigations of Riblets Applied on Low Pressure Turbine Exit Guide Vanes for Two Different Operating Points
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Topics: Guide vanes, Pressure, Turbines, Suction, Acoustics, Blades, Design, Fuel consumption, Probes, Aircraft
Proceedings Papers

Centrifugal Compressor Design for Near-Critical Point Applications

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Alireza Ameli, Ali Afzalifar, Teemu Turunen-Saaresti, Jari Backman
Proc. ASME. GT2018, Volume 9: Oil and Gas Applications; Supercritical CO2 Power Cycles; Wind Energy, V009T38A001, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75067
https://doi.org/10.1115/GT2018-75067
View Paper titled, Centrifugal Compressor Design for Near-Critical Point Applications
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Topics: Compressors, Design, Brayton cycle, Design methodology, Compressibility, Cycles, Energy conversion, Enthalpy, Skin friction (Fluid dynamics), Supercritical carbon dioxide
Proceedings Papers

Data-Driven Pre-Design Tool for Small Scale Centrifugal Compressors in Refrigeration

Free

Violette Mounier, Cyril Picard, Jürg Schiffmann
Proc. ASME. GT2018, Volume 8: Microturbines, Turbochargers, and Small Turbomachines; Steam Turbines, V008T26A012, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-76349
https://doi.org/10.1115/GT2018-76349
View Paper titled, Data-Driven Pre-Design Tool for Small Scale Centrifugal Compressors in Refrigeration
Open the PDF for Data-Driven Pre-Design Tool for Small Scale Centrifugal Compressors in Refrigeration in another window
Topics: Compressors, Design, Refrigeration, Blades, Geometry, Air conditioners, Bearings, Clearances (Engineering), Exhaust systems, Fluids
Proceedings Papers

Skin Friction Measurements of Transition in High Reynolds Number, Adverse Pressure Gradient Flow

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Brian M. Holley, Larry W. Hardin, Gregory Tillman, Ray-Sing Lin, Jongwook Joo
Proc. ASME. GT2018, Volume 2A: Turbomachinery, V02AT39A037, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-76708
https://doi.org/10.1115/GT2018-76708
View Paper titled, Skin Friction Measurements of Transition in High Reynolds Number, Adverse Pressure Gradient Flow
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Topics: Flow (Dynamics), Pressure gradient, Reynolds number, Skin friction (Fluid dynamics), Boundary layers, Modeling, Acoustics, Airfoils, Chords (Trusses), Computational fluid dynamics
Proceedings Papers

The Behavior of the Casing Boundary Layer With the Presence of Tip Leakage Vortex

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Xi Nan, Feng Lin, Takehiro Himeno, Toshinori Watanabe
Proc. ASME. GT2018, Volume 2A: Turbomachinery, V02AT39A018, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75916
https://doi.org/10.1115/GT2018-75916
View Paper titled, The Behavior of the Casing Boundary Layer With the Presence of Tip Leakage Vortex
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Topics: Boundary layers, Leakage, Vortices, Flow (Dynamics), Compressors, Separation (Technology), Skin friction (Fluid dynamics), Blades, Pressure
Proceedings Papers

Large Eddy Simulation of Boundary Layer Transition Mechanisms in a Gas-Turbine Compressor Cascade

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Ashley D. Scillitoe, Paul G. Tucker, Paolo Adami
Proc. ASME. GT2018, Volume 2A: Turbomachinery, V02AT45A009, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75569
https://doi.org/10.1115/GT2018-75569
View Paper titled, Large Eddy Simulation of Boundary Layer Transition Mechanisms in a Gas-Turbine Compressor Cascade
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Topics: Boundary layers, Cascades (Fluid dynamics), Compressors, Gas turbines, Large eddy simulation, Pressure, Turbulence, Convection, Separation (Technology), Suction
Proceedings Papers

Thermal Boundary Layer Response to Periodic Fluctuations

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J. Saavedra, G. Paniagua, O. Chazot
Proc. ASME. GT2018, Volume 5C: Heat Transfer, V05CT22A007, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-76896
https://doi.org/10.1115/GT2018-76896
View Paper titled, Thermal Boundary Layer Response to Periodic Fluctuations
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Topics: Fluctuations (Physics), Thermal boundary layers, Flow (Dynamics), Boundary layers, Airfoils, Diffusion (Physics), Momentum, Shear stress, Blades, Combustion chambers
Proceedings Papers

Effect of the Gas to Wall Temperature Ratio on the Bypass Transition

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Riccardo Rubini, Roberto Maffulli, Tony Arts
Proc. ASME. GT2018, Volume 2C: Turbomachinery, V02CT42A034, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-76214
https://doi.org/10.1115/GT2018-76214
View Paper titled, Effect of the Gas to Wall Temperature Ratio on the Bypass Transition
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Topics: Boundary layers, Design, Engineering design processes, Engineering simulation, Flow (Dynamics), Heat transfer, High pressure (Physics), Mach number, Machinery, Modeling