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Proceedings Papers

Numerical Study of Blade Tip Cooling at High Speed With Tip and Pressure-Side Coolant Injections

Zhihua Zhou, Songtao Wang, Shaowen Chen
Proc. ASME. GT2018, Volume 5A: Heat Transfer, V05AT12A012, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75915
https://doi.org/10.1115/GT2018-75915
View Paper titled, Numerical Study of Blade Tip Cooling at High Speed With Tip and Pressure-Side Coolant Injections
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Topics: Blades, Coolants, Cooling, Pressure, Film cooling, Cavities, Suction, Heat transfer, Stress, Heat
Proceedings Papers

Twin-Web Turbine Discs: Part 2 — Fabrication and Processing

Boris Vasilyev, Liubov Magerramova, Anton Salnikov, Nikolay Tsykunov, Vladimir Isakov, Artem Semenov
Proc. ASME. GT2018, Volume 7A: Structures and Dynamics, V07AT30A007, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-76310
https://doi.org/10.1115/GT2018-76310
View Paper titled, Twin-Web Turbine Discs: Part 2 — Fabrication and Processing
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Topics: Disks, Manufacturing, Turbines, Additive manufacturing, Cavities, Computerized tomography, Eddies (Fluid dynamics), Eddy currents (Electricity), Heat, Hot pressing
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

Hermetically Sealed Squeeze Film Damper for Operation in Oil-Free Environments

Bugra Ertas, Adolfo Delgado
Proc. ASME. GT2018, Volume 7B: Structures and Dynamics, V07BT34A035, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-76308
https://doi.org/10.1115/GT2018-76308
View Paper titled, Hermetically Sealed Squeeze Film Damper for Operation in Oil-Free Environments
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Topics: Dampers, Damping, Cavitation, Flow (Dynamics), Gas bearings, Stiffness, Clearances (Engineering), Bearings, Cavities, Density
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
Open the PDF for Leakage and Dynamic Force Coefficients for Two Labyrinth Gas Seals: Teeth-on-Stator and Interlocking Teeth Configurations — A CFD Approach to Their Performance in another window
Topics: Computational fluid dynamics, Leakage, Stators, Pressure, Rotors, Damping, Flow (Dynamics), Stiffness, Whirls, Cavities
Proceedings Papers

Impact Analysis of Pocket Damper Seal Geometry Variations on Leakage Performance and Rotordynamic Force Coefficients Using CFD

Clemens Griebel
Proc. ASME. GT2018, Volume 7B: Structures and Dynamics, V07BT34A040, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-76864
https://doi.org/10.1115/GT2018-76864
View Paper titled, Impact Analysis of Pocket Damper Seal Geometry Variations on Leakage Performance and Rotordynamic Force Coefficients Using CFD
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Topics: Computational fluid dynamics, Dampers, Geometry, Leakage, Design, Damping, Rotors, 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

Compliant Hybrid Gas Bearing Using Modular Hermetically-Sealed Squeeze Film Dampers

Bugra Ertas, Adolfo Delgado
Proc. ASME. GT2018, Volume 7B: Structures and Dynamics, V07BT34A036, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-76312
https://doi.org/10.1115/GT2018-76312
View Paper titled, Compliant Hybrid Gas Bearing Using Modular Hermetically-Sealed Squeeze Film Dampers
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Topics: Dampers, Gas bearings, Bearings, Damping, Stress, Flow (Dynamics), Testing, Bearing design, Carbon, Cavities
Proceedings Papers

Development of a Meanline Model for Preliminary Design of Recirculating Casing Treatment in Turbocharger Compressors

Carlos Felipe F. Favaretto, Mark R. Anderson, Shuo Li, Leon Hu
Proc. ASME. GT2018, Volume 8: Microturbines, Turbochargers, and Small Turbomachines; Steam Turbines, V008T26A006, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75717
https://doi.org/10.1115/GT2018-75717
View Paper titled, Development of a Meanline Model for Preliminary Design of Recirculating Casing Treatment in Turbocharger Compressors
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Topics: Compressors, Design, Turbochargers, Flow (Dynamics), Cavities, Computational fluid dynamics, Impellers, Surges
Proceedings Papers

Aerodynamic Design of a Ported Shroud Casing Treatment for a Turbocharger Compressor of a Miller-Cycle Gasoline Engine

Christoph Schäfer, Mathias Bogner, Jan Ehrhard, Matthias Dunzer
Proc. ASME. GT2018, Volume 8: Microturbines, Turbochargers, and Small Turbomachines; Steam Turbines, V008T26A001, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75033
https://doi.org/10.1115/GT2018-75033
View Paper titled, Aerodynamic Design of a Ported Shroud Casing Treatment for a Turbocharger Compressor of a Miller-Cycle Gasoline Engine
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Topics: Compressors, Design, Gasoline engines, Miller cycle, Turbochargers, Flow (Dynamics), Surges, Acoustics, Cavities, Engines
Proceedings Papers

Improvement of Steam Turbine Stage Efficiency by Controlling Rotor Shroud Leakage Flows: Part I — Design Concept and Typical Performance of a Swirl Breaker

Takanori Shibata, Hisataka Fukushima, Kiyoshi Segawa
Proc. ASME. GT2018, Volume 8: Microturbines, Turbochargers, and Small Turbomachines; Steam Turbines, V008T29A009, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75269
https://doi.org/10.1115/GT2018-75269
View Paper titled, Improvement of Steam Turbine Stage Efficiency by Controlling Rotor Shroud Leakage Flows: Part I — Design Concept and Typical Performance of a Swirl Breaker
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Topics: Design, Leakage flows, Rotors, Steam turbines, Cavities, Blades, Computational fluid dynamics, Turbines, Flow (Dynamics), Geometry
Proceedings Papers

Improvement of Steam Turbine Stage Efficiency by Controlling Rotor Shroud Leakage Flows: Part II — Effect of Axial Distance Between a Swirl Breaker and Rotor Shroud on Efficiency Improvement

Chongfei Duan, Hisataka Fukushima, Kiyoshi Segawa, Takanori Shibata, Hidetoshi Fujii
Proc. ASME. GT2018, Volume 8: Microturbines, Turbochargers, and Small Turbomachines; Steam Turbines, V008T29A010, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75270
https://doi.org/10.1115/GT2018-75270
View Paper titled, Improvement of Steam Turbine Stage Efficiency by Controlling Rotor Shroud Leakage Flows: Part II — Effect of Axial Distance Between a Swirl Breaker and Rotor Shroud on Efficiency Improvement
Open the PDF for Improvement of Steam Turbine Stage Efficiency by Controlling Rotor Shroud Leakage Flows: Part II — Effect of Axial Distance Between a Swirl Breaker and Rotor Shroud on Efficiency Improvement in another window
Topics: Leakage flows, Rotors, Steam turbines, Cavities, Computational fluid dynamics, Pressure, Geometry, Design, Flow (Dynamics), Reliability
Proceedings Papers

Effects of Cavity Purge Flow on Intermediate Turbine Duct Flowfield

Jun Liu, Qiang Du, Guang Liu, Pei Wang, Hongrui Liu, Qingzong Xu
Proc. ASME. GT2018, Volume 2B: Turbomachinery, V02BT43A005, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-76324
https://doi.org/10.1115/GT2018-76324
View Paper titled, Effects of Cavity Purge Flow on Intermediate Turbine Duct Flowfield
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Topics: Cavities, Ducts, Flow (Dynamics), Turbines, Engines, Design, Pressure, Blades, Diffusion (Physics), Experimental methods
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

Numerical Study of a Linear Cascade With Upstream Cavity Using Various Rim-Seal Geometries and Purge Rates

Maxime Fiore, Nicolas Gourdain, Jean-François Boussuge, Eric Lippinois
Proc. ASME. GT2018, Volume 2B: Turbomachinery, V02BT41A025, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-76615
https://doi.org/10.1115/GT2018-76615
View Paper titled, Numerical Study of a Linear Cascade With Upstream Cavity Using Various Rim-Seal Geometries and Purge Rates
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Topics: Cascades (Fluid dynamics), Cavities, Flow (Dynamics), Geometry, Blades, Clearances (Engineering), Pressure, Annulus, Dampers, Gas turbines
Proceedings Papers

Source Term Based Modeling of Rotating Cavitation in Turbopumps

A. G. Vermes, C. Lettieri
Proc. ASME. GT2018, Volume 2C: Turbomachinery, V02CT42A004, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75194
https://doi.org/10.1115/GT2018-75194
View Paper titled, Source Term Based Modeling of Rotating Cavitation in Turbopumps
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Topics: Cavitation, Modeling, Cavities, Pumps, Design, Rocket engines, Vehicles, Combustion chambers, Computation, Engines
Proceedings Papers

Multi-Objective Optimization of Inclined Discrete Cavities in a Centrifugal Compressor Using Hybrid Optimization Techniques

Sang-Bum Ma, Kwang-Yong Kim
Proc. ASME. GT2018, Volume 2D: Turbomachinery, V02DT46A011, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-76076
https://doi.org/10.1115/GT2018-76076
View Paper titled, Multi-Objective Optimization of Inclined Discrete Cavities in a Centrifugal Compressor Using Hybrid Optimization Techniques
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Topics: Cavities, Compressors, Optimization, Pareto optimization, Design, Artificial neural networks, Genetic algorithms, Impellers, Navier-Stokes equations, Particle swarm optimization
Proceedings Papers

APU-Noise Reduction by Novel Muffler Concepts

Karsten Knobloch, Lars Enghardt, Friedrich Bake
Proc. ASME. GT2018, Volume 2B: Turbomachinery, V02BT43A009, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-76762
https://doi.org/10.1115/GT2018-76762
View Paper titled, APU-Noise Reduction by Novel Muffler Concepts
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Topics: Noise (Sound), Silencers, Cavities, Design, Flow (Dynamics), Absorption, Acoustics, Damping, Ducts, Microphones
Proceedings Papers

Design Point Efficiency of Radial Turbines

Graham D. Cox
Proc. ASME. GT2018, Volume 2B: Turbomachinery, V02BT44A011, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75533
https://doi.org/10.1115/GT2018-75533
View Paper titled, Design Point Efficiency of Radial Turbines
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Topics: Design, Turbines, Flow (Dynamics), Mach number, Blades, Databases, Wheels, Cavities, Computational fluid dynamics, Geometry