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Proceedings Papers

Towards Structural Topology Optimization of Rotor Blisks

Enrico Boccini, Enrico Meli, Andrea Rindi, Lorenzo Pinelli, Lorenzo Peruzzi, Andrea Arnone
Proc. ASME. GT2018, Volume 7A: Structures and Dynamics, V07AT30A008, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-76482
https://doi.org/10.1115/GT2018-76482
View Paper titled, Towards Structural Topology Optimization of Rotor Blisks
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Topics: Optimization, Rotors, Topology, Stators, Blades, Design, Geometry, Stress, Turbomachinery, Additive manufacturing
Proceedings Papers

Unconventional Techniques for the Analysis of Experimental Spiral Vibrations

Andrea Vania, Paolo Pennacchi, Steven Chatterton, Filippo Cangioli
Proc. ASME. GT2018, Volume 7A: Structures and Dynamics, V07AT33A001, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75005
https://doi.org/10.1115/GT2018-75005
View Paper titled, Unconventional Techniques for the Analysis of Experimental Spiral Vibrations
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Topics: Vibration, Friction, Rotors, Damage, Machinery, Modeling, Stability, Stators, Steam turbines, Uncertainty
Proceedings Papers

Numerical Modeling of Thermally-Induced Vibration in Rotor Caused by Light-Rub Against Brush Seal

Filippo Cangioli, Paolo Pennacchi, Andrea Vania, Steven Chatterton
Proc. ASME. GT2018, Volume 7A: Structures and Dynamics, V07AT33A002, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75042
https://doi.org/10.1115/GT2018-75042
View Paper titled, Numerical Modeling of Thermally-Induced Vibration in Rotor Caused by Light-Rub Against Brush Seal
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Topics: Computer simulation, Rotors, Vibration, Clearances (Engineering), Leakage, Turbomachinery, Design, Friction, Machinery, Dynamics (Mechanics)
Proceedings Papers

A Sobol' Sequence Parametric Analysis of Rotor Thermal Bow in Gas Turbines

Evan O. Smith, Jouke H. S. de Baar, Andrew J. Neely
Proc. ASME. GT2018, Volume 7A: Structures and Dynamics, V07AT33A010, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75347
https://doi.org/10.1115/GT2018-75347
View Paper titled, A Sobol' Sequence Parametric Analysis of Rotor Thermal Bow in Gas Turbines
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Topics: Gas turbines, Rotors, Compressors, Engines, Stiffness, Temperature gradient, Wall thickness, Annulus, Cavities, Clearances (Engineering)
Proceedings Papers

Measurements of the Leakage and Rotordynamic Performance of Interlocking Labyrinth Seals

Keith Gary, Dara W. Childs, Mauricio A. Ramirez
Proc. ASME. GT2018, Volume 7B: Structures and Dynamics, V07BT34A025, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75885
https://doi.org/10.1115/GT2018-75885
View Paper titled, Measurements of the Leakage and Rotordynamic Performance of Interlocking Labyrinth Seals
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Topics: Leakage, Cavities, Pressure, Rotors, Stators, Brakes, Damping, Magnetic bearings, Clearances (Engineering), Stability
Proceedings Papers

Experimental Study of the Leakage and Rotordynamic Coefficients of a Long Smooth Seal With Two-Phase, Mainly-Oil Mixtures

Min Zhang, Dara W. Childs, James E. Mclean, Jr., Dung L. Tran, Hari Shrestha
Proc. ASME. GT2018, Volume 7B: Structures and Dynamics, V07BT34A010, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75328
https://doi.org/10.1115/GT2018-75328
View Paper titled, Experimental Study of the Leakage and Rotordynamic Coefficients of a Long Smooth Seal With Two-Phase, Mainly-Oil Mixtures
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Topics: Leakage, Flow (Dynamics), Stiffness, Damping, Fluids, Rotors, Bubbles, Clearances (Engineering), Friction, Pressure
Proceedings Papers

Leakage and Dynamic Force Coefficients for Two Labyrinth Gas Seals: Teeth-on-Stator and Interlocking Teeth Configurations — A CFD Approach to Their Performance

Luis San Andrés, Tingcheng Wu
Proc. ASME. GT2018, Volume 7B: Structures and Dynamics, V07BT34A005, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75205
https://doi.org/10.1115/GT2018-75205
View Paper titled, Leakage and Dynamic Force Coefficients for Two Labyrinth Gas Seals: Teeth-on-Stator and Interlocking Teeth Configurations — A CFD Approach to Their Performance
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Topics: Computational fluid dynamics, Leakage, Stators, Pressure, Rotors, Damping, Flow (Dynamics), Stiffness, Whirls, Cavities
Proceedings Papers

Development and Validation of Test Rig for Measurements of Leakage and Rotordynamic Performance of Interlocking Labyrinth Seals

Mauricio Ramirez, Dara Childs, Keith Gary
Proc. ASME. GT2018, Volume 7B: Structures and Dynamics, V07BT34A045, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-77131
https://doi.org/10.1115/GT2018-77131
View Paper titled, Development and Validation of Test Rig for Measurements of Leakage and Rotordynamic Performance of Interlocking Labyrinth Seals
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Topics: Leakage, Cavities, Damping, Pressure, Rotors, Stators, Stiffness, Pressure measurement, Turbomachinery, Waves
Proceedings Papers

Validation of CFD Analysis Method for Seal Dynamic Coefficients With Various Labyrinth Seal Types

Makoto Iwasaki, Kenichi Murata, Rimpei Kawashita, Yasunori Tokimasa, Kazuyuki Matsumoto, Makoto Kamishita
Proc. ASME. GT2018, Volume 7B: Structures and Dynamics, V07BT34A006, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75251
https://doi.org/10.1115/GT2018-75251
View Paper titled, Validation of CFD Analysis Method for Seal Dynamic Coefficients With Various Labyrinth Seal Types
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Topics: Computational fluid dynamics, Rotors, Fins, Stators, Steam turbines, Whirls, Accelerometers, Air flow, Coating processes, Coatings
Proceedings Papers

Application of Dry-Friction Whip and Whirl Solution Methods to Systems With Support Asymmetry

Jason C. Wilkes
Proc. ASME. GT2018, Volume 7B: Structures and Dynamics, V07BT34A041, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-76991
https://doi.org/10.1115/GT2018-76991
View Paper titled, Application of Dry-Friction Whip and Whirl Solution Methods to Systems With Support Asymmetry
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Topics: Dry-friction whip and whirl, Rotors, Stators, Annulus, Clearances (Engineering)
Proceedings Papers

Predictions for Non-Contacting Mechanical Face Seal Vibration With External Excitation From Pump Vibration: Part I — Flexibly Mounted Stator

Clay S. Norrbin, Dara W. Childs
Proc. ASME. GT2018, Volume 7B: Structures and Dynamics, V07BT34A048, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-77198
https://doi.org/10.1115/GT2018-77198
View Paper titled, Predictions for Non-Contacting Mechanical Face Seal Vibration With External Excitation From Pump Vibration: Part I — Flexibly Mounted Stator
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Topics: Excitation, Pumps, Stators, Vibration, Flexible manufacturing systems, Seals, Stability, Damping, Fluid films, Inertia (Mechanics)
Proceedings Papers

Static and Rotordynamic Characteristics of Liquid Annular Seals With a Circumferentially-Grooved Stator and Smooth Rotor Using Three Levels of Circumferential Inlet-Fluid Rotation

Dara W. Childs, Jose M. Torres, Joshua T. Bullock
Proc. ASME. GT2018, Volume 7B: Structures and Dynamics, V07BT34A009, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75325
https://doi.org/10.1115/GT2018-75325
View Paper titled, Static and Rotordynamic Characteristics of Liquid Annular Seals With a Circumferentially-Grooved Stator and Smooth Rotor Using Three Levels of Circumferential Inlet-Fluid Rotation
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Topics: Fluids, Rotation, Rotors, Stators, Stiffness, Damping, Pumps, Clearances (Engineering), Flowmeters, Geometry
Proceedings Papers

Design of a Variable Geometry Axial-Inflow Turbine Turbocharger Equipped With a Diffuser-Collector System

Apostolos Pesyridis, Alessandro Cappiello, Raffaele Tuccillo
Proc. ASME. GT2018, Volume 8: Microturbines, Turbochargers, and Small Turbomachines; Steam Turbines, V008T26A004, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75403
https://doi.org/10.1115/GT2018-75403
View Paper titled, Design of a Variable Geometry Axial-Inflow Turbine Turbocharger Equipped With a Diffuser-Collector System
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Topics: Design, Diffusers, Geometry, Inflow, Turbines, Turbochargers, Engines, Radial flow, Compressors, Flow (Dynamics)
Proceedings Papers

Effects of Inlet Chamber Structure of the Control Stage on the Unsteady Aerodynamic Force

Keke Gao, Chongyu Wang, Yonghui Xie, Di Zhang
Proc. ASME. GT2018, Volume 8: Microturbines, Turbochargers, and Small Turbomachines; Steam Turbines, V008T29A034, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-76632
https://doi.org/10.1115/GT2018-76632
View Paper titled, Effects of Inlet Chamber Structure of the Control Stage on the Unsteady Aerodynamic Force
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Topics: Aerodynamics, Fluid-dynamic forces, Flow (Dynamics), Blades, Pressure, Turbines, Entropy, Fatigue, Fatigue failure, Fracture (Materials)
Proceedings Papers

The Pressure Field at the Output From a Low Pressure Exhaust Hood and Condenser Neck of the 1090 MW Steam Turbine: Experimental and Numerical Research

Michal Hoznedl, Antonín Živný, Aleš Macálka, Robert Kalista, Kamil Sedlák, Lukáš Bednář, Ladislav Tajč
Proc. ASME. GT2018, Volume 8: Microturbines, Turbochargers, and Small Turbomachines; Steam Turbines, V008T29A006, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75248
https://doi.org/10.1115/GT2018-75248
View Paper titled, The Pressure Field at the Output From a Low Pressure Exhaust Hood and Condenser Neck of the 1090 MW Steam Turbine: Experimental and Numerical Research
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Topics: Condensers (steam plant), Exhaust systems, Pressure, Steam turbines, Flow (Dynamics), Blades, Boundary-value problems, Computation, Computational fluid dynamics, Cooling
Proceedings Papers

Non-Axisymmetric Endwall Profiling of a Stator Row in the Presence of the Rotor in a High Pressure Turbine

Abdul Rehman, Bo Liu, Zhenzhe Na, Hao Cheng
Proc. ASME. GT2018, Volume 2B: Turbomachinery, V02BT41A017, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-76070
https://doi.org/10.1115/GT2018-76070
View Paper titled, Non-Axisymmetric Endwall Profiling of a Stator Row in the Presence of the Rotor in a High Pressure Turbine
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Topics: High pressure (Physics), Rotors, Stators, Turbines, Design, Flow (Dynamics), Optimization, Artificial neural networks, Axial flow, Computer software
Proceedings Papers

Scaling Sealing Effectiveness in a Stator-Rotor Cavity for Differing Blade Spans

Reid A. Berdanier, Iván Monge-Concepción, Brian F. Knisely, Michael D. Barringer, Karen A. Thole, Eric A. Grover
Proc. ASME. GT2018, Volume 2B: Turbomachinery, V02BT41A031, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-77105
https://doi.org/10.1115/GT2018-77105
View Paper titled, Scaling Sealing Effectiveness in a Stator-Rotor Cavity for Differing Blade Spans
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Topics: Arches, Blades, Cavities, Rotors, Sealing (Process), Stators, Flow (Dynamics), Engines, Airfoils, Compressors
Proceedings Papers

Maximum Loading Capacity of Tandem Blades in Axial Compressors

Baojie Liu, Du Fu, Xianjun Yu
Proc. ASME. GT2018, Volume 2C: Turbomachinery, V02CT42A044, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-76770
https://doi.org/10.1115/GT2018-76770
View Paper titled, Maximum Loading Capacity of Tandem Blades in Axial Compressors
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Topics: Blades, Compressors, Design, Computational fluid dynamics, Diffusers, Flow turning, Geometry, High pressure (Physics), Numerical analysis, Pressure
Proceedings Papers

Evaluating Configurations of Double Surface Helical Groove Seals Using Computational Fluid Dynamics

Cori Watson, Houston Wood
Proc. ASME. GT2018, Volume 2C: Turbomachinery, V02CT42A053, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-77190
https://doi.org/10.1115/GT2018-77190
View Paper titled, Evaluating Configurations of Double Surface Helical Groove Seals Using Computational Fluid Dynamics
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Topics: Computational fluid dynamics, Design, Engineering simulation, Engineering standards, Flow (Dynamics), Fluids, High pressure (Physics), Kinetic energy, Machinery, Preferences
Proceedings Papers

Estimating the Drag Developed by a High Bypass Ratio Turbofan Engine

M. S. Zawislak, D. J. Cerantola, A. M. Birk
Proc. ASME. GT2018, Volume 1: Aircraft Engine; Fans and Blowers; Marine, V001T01A005, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75204
https://doi.org/10.1115/GT2018-75204
View Paper titled, Estimating the Drag Developed by a High Bypass Ratio Turbofan Engine
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Topics: Drag (Fluid dynamics), Engines, Turbofans, Thrust, Computational fluid dynamics, Boats, Databases, Design, Ducts, Engineering simulation