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Proceedings Papers

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

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
Paper No: GT2022-82558
DOI: https://doi.org/10.1115/GT2022-82558
View Paper titled, Profile Loss Reduction of High Lift Turbine Blades With Rough and Ribbed Surfaces
Click here to open pdf in another window PDF for Profile Loss Reduction of High Lift Turbine Blades With Rough and Ribbed Surfaces
Topics: Surface roughness, Turbine blades, Blades, Turbulence, Boundary layers, Pressure gradient, Separation (Technology), Suction, Boundary layer turbulence, Bubbles
Proceedings Papers

Analysis of Ultra-High Bypass Ratio Turbofan Nacelle Geometries With Conventional and Short Intakes at Take-Off and Cruise

Andrea Magrini, Denis Bousi, Ernesto Benini
Proc. ASME. GT2022, Volume 10C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V10CT33A005, June 13–17, 2022
Paper No: GT2022-81912
DOI: https://doi.org/10.1115/GT2022-81912
View Paper titled, Analysis of Ultra-High Bypass Ratio Turbofan Nacelle Geometries With Conventional and Short Intakes at Take-Off and Cruise
Click here to open pdf in another window PDF for Analysis of Ultra-High Bypass Ratio Turbofan Nacelle Geometries With Conventional and Short Intakes at Take-Off and Cruise
Topics: Turbofans, Drag (Fluid dynamics), Engines, Flow (Dynamics), Pressure, Weight (Mass), Diffusion (Physics), Exhaust systems, Rotors, Separation (Technology)
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
Paper No: GT2022-82570
DOI: https://doi.org/10.1115/GT2022-82570
View Paper titled, Calculating Windage Losses: A Review
Click here to open pdf in another window PDF for Calculating Windage Losses: A Review
Topics: Compressors, Density, Drag (Fluid dynamics), Fluids, High pressure (Physics), Machinery, Modeling, Reynolds number, Rotation, Rotors
Proceedings Papers

Novel UAS Propeller Design Part 1: Using an Unloaded Tip to Reduce Power Requirements and Lower Generated Sound Levels for Propellers Designed for Minimum Induced Drag

Charles Wisniewski, Kenneth Van Treuren
Proc. ASME. GT2022, Volume 1: Aircraft Engine; Ceramics and Ceramic Composites, V001T01A012, June 13–17, 2022
Paper No: GT2022-81579
DOI: https://doi.org/10.1115/GT2022-81579
View Paper titled, Novel UAS Propeller Design Part 1: Using an Unloaded Tip to Reduce Power Requirements and Lower Generated Sound Levels for Propellers Designed for Minimum Induced Drag
Click here to open pdf in another window PDF for Novel UAS Propeller Design Part 1: Using an Unloaded Tip to Reduce Power Requirements and Lower Generated Sound Levels for Propellers Designed for Minimum Induced Drag
Topics: Design, Drag (Fluid dynamics), Propellers
Proceedings Papers

Novel UAS Propeller Design Part 2: Design Hub and Tip Angle of Attack Sensitivity of UAS Propellers Designed for Minimum Induced Drag

Kenneth Van Treuren, Charles Wisniewski
Proc. ASME. GT2022, Volume 1: Aircraft Engine; Ceramics and Ceramic Composites, V001T01A022, June 13–17, 2022
Paper No: GT2022-82330
DOI: https://doi.org/10.1115/GT2022-82330
View Paper titled, Novel UAS Propeller Design Part 2: Design Hub and Tip Angle of Attack Sensitivity of UAS Propellers Designed for Minimum Induced Drag
Click here to open pdf in another window PDF for Novel UAS Propeller Design Part 2: Design Hub and Tip Angle of Attack Sensitivity of UAS Propellers Designed for Minimum Induced Drag
Topics: Design, Drag (Fluid dynamics), Propellers
Proceedings Papers

Effect of a Reduced Oil Flow Rate on the Static and Dynamic Performance of a Tilting Pad Journal Bearing Running in Both the Flooded and Evacuated Conditions

Luis San Andrés, Andy Alcantar
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, V08AT22A006, June 13–17, 2022
Paper No: GT2022-81839
DOI: https://doi.org/10.1115/GT2022-81839
View Paper titled, Effect of a Reduced Oil Flow Rate on the Static and Dynamic Performance of a Tilting Pad Journal Bearing Running in Both the Flooded and Evacuated Conditions
Click here to open pdf in another window PDF for Effect of a Reduced Oil Flow Rate on the Static and Dynamic Performance of a Tilting Pad Journal Bearing Running in Both the Flooded and Evacuated Conditions
Topics: Bearings, Flow (Dynamics), Journal bearings, Stress, Drag (Fluid dynamics), Temperature, Damping, Fluid films, Lubricants, Machinery
Proceedings Papers

CFD Analysis of the Influence of Gas Content on the Rotordynamic Force Coefficients for a Circumferentially Grooved Annular Seal for Multiple Phase Pumps

Tingcheng Wu, Luis San Andrés, Xueliang Lu
Proc. ASME. GT2021, Volume 9A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Design and Engineering, V09AT24A005, June 7–11, 2021
Paper No: GT2021-58631
DOI: https://doi.org/10.1115/GT2021-58631
View Paper titled, CFD Analysis of the Influence of Gas Content on the Rotordynamic Force Coefficients for a Circumferentially Grooved Annular Seal for Multiple Phase Pumps
Click here to open pdf in another window PDF for CFD Analysis of the Influence of Gas Content on the Rotordynamic Force Coefficients for a Circumferentially Grooved Annular Seal for Multiple Phase Pumps
Topics: Computational fluid dynamics, Pumps, Damping, Pressure, Engineering simulation, Excitation, Flow (Dynamics), Rotors, Simulation, Stability
Proceedings Papers

Measurements to Quantify the Effect of a Reduced Flow Rate on the Performance of a Tilting Pad Journal Bearing (LBP) With Flooded Ends

Luis San Andrés, Jonathan Toner, Andy Alcantar
Proc. ASME. GT2021, Volume 9A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Design and Engineering, V09AT24A007, June 7–11, 2021
Paper No: GT2021-58771
DOI: https://doi.org/10.1115/GT2021-58771
View Paper titled, Measurements to Quantify the Effect of a Reduced Flow Rate on the Performance of a Tilting Pad Journal Bearing (LBP) With Flooded Ends
Click here to open pdf in another window PDF for Measurements to Quantify the Effect of a Reduced Flow Rate on the Performance of a Tilting Pad Journal Bearing (LBP) With Flooded Ends
Topics: Bearings, Flow (Dynamics), Journal bearings, Stress, Temperature, Drag (Fluid dynamics), Babbitt metal, Damping, Energy efficiency, Floods
Proceedings Papers

Effect of Pad Material, Copper vs. Steel, on the Performance of a Tilting Pad Journal Bearing: Measurements and Predictions

Luis San Andrés, Hussain Kaizar, Hardik Jani, Manish Thorat
Proc. ASME. GT2021, Volume 9A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Design and Engineering, V09AT24A017, June 7–11, 2021
Paper No: GT2021-59401
DOI: https://doi.org/10.1115/GT2021-59401
View Paper titled, Effect of Pad Material, Copper vs. Steel, on the Performance of a Tilting Pad Journal Bearing: Measurements and Predictions
Click here to open pdf in another window PDF for Effect of Pad Material, Copper vs. Steel, on the Performance of a Tilting Pad Journal Bearing: Measurements and Predictions
Topics: Copper, Journal bearings, Steel, Bearings, Stress, Temperature, Stiffness, Clearances (Engineering), Damping, Drag (Fluid dynamics)
Proceedings Papers

On the Shaft Speed Selection of Parallel Hybrid Aero Engines

Michael Sielemann, Jesse Gohl, Xin Zhao, Konstantinos Kyprianidis, Giorgio Valente, Sharmila Sumsurooah
Proc. ASME. GT2021, Volume 1: Aircraft Engine; Fans and Blowers; Marine; Wind Energy; Scholar Lecture, V001T01A014, June 7–11, 2021
Paper No: GT2021-59500
DOI: https://doi.org/10.1115/GT2021-59500
View Paper titled, On the Shaft Speed Selection of Parallel Hybrid Aero Engines
Click here to open pdf in another window PDF for On the Shaft Speed Selection of Parallel Hybrid Aero Engines
Topics: Aircraft, Aircraft engines, Cooling, Design, Drag (Fluid dynamics), Electric propulsion, Electricity (Physics), Fuel consumption, Gas turbines, Mach number
Proceedings Papers

Fan-Intake Coupling With Conventional and Short Intakes

E. J. Gunn, T. Brandvik, M. J. Wilson
Proc. ASME. GT2021, Volume 1: Aircraft Engine; Fans and Blowers; Marine; Wind Energy; Scholar Lecture, V001T01A003, June 7–11, 2021
Paper No: GT2021-58829
DOI: https://doi.org/10.1115/GT2021-58829
View Paper titled, Fan-Intake Coupling With Conventional and Short Intakes
Click here to open pdf in another window PDF for Fan-Intake Coupling With Conventional and Short Intakes
Topics: Annulus, Boundary layers, Computational fluid dynamics, Design, Diffusion (Physics), Drag (Fluid dynamics), Engineering simulation, Engines, Fans, Flow (Dynamics)
Proceedings Papers

A Key Flow Parameter to the Profile Loss of Low-Pressure Turbine Blades

Hidekazu Kodama, Ken-ichi Funazaki
Proc. ASME. GT2021, Volume 2B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing, V02BT32A003, June 7–11, 2021
Paper No: GT2021-58887
DOI: https://doi.org/10.1115/GT2021-58887
View Paper titled, A Key Flow Parameter to the Profile Loss of Low-Pressure Turbine Blades
Click here to open pdf in another window PDF for A Key Flow Parameter to the Profile Loss of Low-Pressure Turbine Blades
Topics: Flow (Dynamics), Pressure, Turbine blades, Blades, Boundary layers, Form drag, Drag (Fluid dynamics), Design, Friction, Optimization
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
Paper No: GT2021-59684
DOI: https://doi.org/10.1115/GT2021-59684
View Paper titled, Convection in Scaled Turbine Internal Cooling Passages With Additive Manufacturing Roughness
Click here to open pdf in another window PDF for Convection in Scaled Turbine Internal Cooling Passages With Additive Manufacturing Roughness
Topics: Additive manufacturing, Convection, Cooling, Surface roughness, Turbines, Aluminum, Friction, Compressibility, Computer numerical control machine tools, Drag (Fluid dynamics)
Proceedings Papers

Turboelectric Distributed Propulsion Modelling Accounting for Fan Boundary Layer Ingestion and Inlet Distortion

Georgios Athanasakos, Nikolaos Aretakis, Alexios Alexiou, Konstantinos Mathioudakis
Proc. ASME. GT2020, Volume 5: Controls, Diagnostics, and Instrumentation; Cycle Innovations; Cycle Innovations: Energy Storage, V005T06A008, September 21–25, 2020
Paper No: GT2020-14621
DOI: https://doi.org/10.1115/GT2020-14621
View Paper titled, Turboelectric Distributed Propulsion Modelling Accounting for Fan Boundary Layer Ingestion and Inlet Distortion
Click here to open pdf in another window PDF for Turboelectric Distributed Propulsion Modelling Accounting for Fan Boundary Layer Ingestion and Inlet Distortion
Topics: Accounting, Boundary layers, Modeling, Propulsion, Compressors, Design, Propulsion systems, Dimensions, Drag (Fluid dynamics), Electronic systems
Proceedings Papers

Crystal Visco-Plastic Model for Ni-Base Superalloys Under Thermomechanical Fatigue

Navindra Wijeyeratne, Firat Irmak, Ali P. Gordon, Jun-Young Jeon
Proc. ASME. GT2020, Volume 10B: Structures and Dynamics, V10BT27A003, September 21–25, 2020
Paper No: GT2020-14163
DOI: https://doi.org/10.1115/GT2020-14163
View Paper titled, Crystal Visco-Plastic Model for Ni-Base Superalloys Under Thermomechanical Fatigue
Click here to open pdf in another window PDF for Crystal Visco-Plastic Model for Ni-Base Superalloys Under Thermomechanical Fatigue
Topics: Anisotropy, Crystals, Fatigue, Modeling, Superalloys, Thermomechanics, Temperature, Stress, Hardening, Simulation
Proceedings Papers

Numerical Modeling of the Effects of Leading-Edge Erosion and Trailing-Edge Damage on Wind Turbine Loads and Performance

Francesco Papi, Lorenzo Cappugi, Alessandro Bianchini, Sebastian Perez-Becker
Proc. ASME. GT2020, Volume 12: Wind Energy, V012T42A019, September 21–25, 2020
Paper No: GT2020-16310
DOI: https://doi.org/10.1115/GT2020-16310
View Paper titled, Numerical Modeling of the Effects of Leading-Edge Erosion and Trailing-Edge Damage on Wind Turbine Loads and Performance
Click here to open pdf in another window PDF for Numerical Modeling of the Effects of Leading-Edge Erosion and Trailing-Edge Damage on Wind Turbine Loads and Performance
Topics: Computer simulation, Damage, Erosion, Stress, Wind turbines, Airfoils, Computational fluid dynamics, Engineering simulation, Fatigue, Simulation
Proceedings Papers

Interpretation of Low-Pressure Turbine Profile Loss Generation Mechanisms From a Viewpoint of Blade Drag Forces

Hidekazu Kodama, Ken-ichi Funazaki
Proc. ASME. GT2020, Volume 2B: Turbomachinery, V02BT33A009, September 21–25, 2020
Paper No: GT2020-14519
DOI: https://doi.org/10.1115/GT2020-14519
View Paper titled, Interpretation of Low-Pressure Turbine Profile Loss Generation Mechanisms From a Viewpoint of Blade Drag Forces
Click here to open pdf in another window PDF for Interpretation of Low-Pressure Turbine Profile Loss Generation Mechanisms From a Viewpoint of Blade Drag Forces
Topics: Blades, Drag (Fluid dynamics), Pressure, Turbines, Form drag, Friction, Reynolds number, Boundary layers, Bubbles, Cascades (Fluid dynamics)
Proceedings Papers

An Experimental and Computational Investigation of Absolute Pressure Effects on Deposition in an Effusion Cooling Geometry

Christopher P. Bowen, Jeffrey P. Bons
Proc. ASME. GT2020, Volume 2B: Turbomachinery, V02BT34A014, September 21–25, 2020
Paper No: GT2020-15632
DOI: https://doi.org/10.1115/GT2020-15632
View Paper titled, An Experimental and Computational Investigation of Absolute Pressure Effects on Deposition in an Effusion Cooling Geometry
Click here to open pdf in another window PDF for An Experimental and Computational Investigation of Absolute Pressure Effects on Deposition in an Effusion Cooling Geometry
Topics: Cooling, Geometry, Pressure, Flow (Dynamics), Particulate matter, Discharge coefficient, Drag (Fluid dynamics), Engineering simulation, Erosion, Simulation
Proceedings Papers

Numerical Investigation on the Static and Rotordynamic Characteristics for Two Types of Novel Mixed Helical Groove Seals

Zhi Fang, Zhigang Li, Jun Li, Zhenping Feng
Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A036, September 21–25, 2020
Paper No: GT2020-16303
DOI: https://doi.org/10.1115/GT2020-16303
View Paper titled, Numerical Investigation on the Static and Rotordynamic Characteristics for Two Types of Novel Mixed Helical Groove Seals
Click here to open pdf in another window PDF for Numerical Investigation on the Static and Rotordynamic Characteristics for Two Types of Novel Mixed Helical Groove Seals
Topics: Bearings, Cavities, Computational fluid dynamics, Dampers, Damping, Deformation, Drag (Fluid dynamics), Energy dissipation, Fluids, High pressure (Physics)
Proceedings Papers

Experimental Drag and Mixing From Lobed Nozzles Under High Swirl Conditions From a Ducted Fan

Maverick Zawislak, Michael Birk
Proc. ASME. GT2020, Volume 1: Aircraft Engine; Fans and Blowers, V001T01A026, September 21–25, 2020
Paper No: GT2020-15211
DOI: https://doi.org/10.1115/GT2020-15211
View Paper titled, Experimental Drag and Mixing From Lobed Nozzles Under High Swirl Conditions From a Ducted Fan
Click here to open pdf in another window PDF for Experimental Drag and Mixing From Lobed Nozzles Under High Swirl Conditions From a Ducted Fan
Topics: Drag (Fluid dynamics), Nozzles, Vorticity, Thrust, Flow (Dynamics), Vortices, Computational fluid dynamics, Design methodology, Cooling, Design