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Proceedings Papers

Experimental and Numerical Investigations of the Non-Equilibrium Condensation on the Performance and the Flow Pattern in Steam Turbine

Soichiro Tabata, Kiyoshi Segawa, Tadashi Takahashi, Jin Aoyagi
Proc. ASME. GT2022, Volume 2: Coal, Biomass, Hydrogen, and Alternative Fuels; Controls, Diagnostics, and Instrumentation; Steam Turbine, V002T20A004, June 13–17, 2022
Paper No: GT2022-80191
https://doi.org/10.1115/GT2022-80191
View Paper titled, Experimental and Numerical Investigations of the Non-Equilibrium Condensation on the Performance and the Flow Pattern in Steam Turbine
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Topics: Condensation, Equilibrium (Physics), Flow (Dynamics), Steam turbines, Pressure, Computational fluid dynamics, Modeling, Turbines, Temperature
Proceedings Papers

Experimental and Numerical Investigations of the Effects of Real Shape Modeling and Non-Equilibrium Condensation Modeling on the Flow Pattern in Steam Turbine

Soichiro Tabata, Yasuhiro Sasao, Kiyoshi Segawa
Proc. ASME. GT2021, Volume 8: Oil and Gas Applications; Steam Turbine, V008T22A001, June 7–11, 2021
Paper No: GT2021-01754
https://doi.org/10.1115/GT2021-01754
View Paper titled, Experimental and Numerical Investigations of the Effects of Real Shape Modeling and Non-Equilibrium Condensation Modeling on the Flow Pattern in Steam Turbine
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Topics: Condensation, Equilibrium (Physics), Flow (Dynamics), Modeling, Shapes, Steam turbines, Computational fluid dynamics, Blades, Computation, Pipes
Proceedings Papers

Wetness Measurement and Droplet Transport Analysis in Actual Steam Test on a Scaled Low Pressure Turbine

Yasuhiro Sasao, Kiyoshi Segawa, Takeshi Kudo, Ryo Takata, Masaki Osako, Satoru Yamamoto
Proc. ASME. GT2020, Volume 9: Oil and Gas Applications; Organic Rankine Cycle Power Systems; Steam Turbine, V009T23A025, September 21–25, 2020
Paper No: GT2020-16117
https://doi.org/10.1115/GT2020-16117
View Paper titled, Wetness Measurement and Droplet Transport Analysis in Actual Steam Test on a Scaled Low Pressure Turbine
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Topics: Drops, Pressure, Steam, Turbines, Blades, Computational fluid dynamics, Probes, Steam turbines, Erosion, Errors
Proceedings Papers

Experimental and Numerical Investigations of Steam Turbine Exhaust Hood Flow Field With Two Types of Diffusers

Soichiro Tabata, Hisataka Fukushima, Kiyoshi Segawa, Koji Ishibashi, Yoshihiro Kuwamura, Hideaki Sugishita
Proc. ASME. GT2019, Volume 8: Microturbines, Turbochargers, and Small Turbomachines; Steam Turbines, V008T29A014, June 17–21, 2019
Paper No: GT2019-90640
https://doi.org/10.1115/GT2019-90640
View Paper titled, Experimental and Numerical Investigations of Steam Turbine Exhaust Hood Flow Field With Two Types of Diffusers
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Topics: Diffusers, Exhaust systems, Flow (Dynamics), Steam turbines, Computational fluid dynamics, Turbines, Internal flow, Rotating blades, Blades, Kinetic energy
Proceedings Papers

Development and Verification Tests of Titanium 50-Inch and 60-Inch Last Stage Blades for Steam Turbines

Shigeki Senoo, Takeshi Kudo, Hisataka Fukushima, Kiyoshi Segawa, Kazuya Sakakibara
Proc. ASME. GT2019, Volume 8: Microturbines, Turbochargers, and Small Turbomachines; Steam Turbines, V008T29A001, June 17–21, 2019
Paper No: GT2019-90003
https://doi.org/10.1115/GT2019-90003
View Paper titled, Development and Verification Tests of Titanium 50-Inch and 60-Inch Last Stage Blades for Steam Turbines
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Topics: Blades, Steam turbines, Titanium, Flow (Dynamics), Rotors, Shock waves, Stators, Annulus, Exhaust systems, Pressure
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
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
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
Journal Articles

Experimental Investigation of the Grouped Blade Vibration for Steam Turbine by Noncontact Sensors

Tomomi Nakajima, Kiyoshi Segawa, Hiromichi Kitahara, Akimitsu Seo, Yutaka Yamashita, Takeshi Kudo
Journal: Journal of Engineering for Gas Turbines and Power
Article Type: Research-Article
J. Eng. Gas Turbines Power. May 2018, 140(5): 052603.
Paper No: GTP-17-1406
https://doi.org/10.1115/1.4038282
Published Online: January 10, 2018
View Article titled, Experimental Investigation of the Grouped Blade Vibration for Steam Turbine by Noncontact Sensors
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Topics: Blades, Vibration, Sensors, Steam turbines
Proceedings Papers

Experimental Investigation of the Grouped Blade Vibration for Steam Turbine by Non-Contact Sensors

Tomomi Nakajima, Kiyoshi Segawa, Hiromichi Kitahara, Akimitsu Seo, Yutaka Yamashita, Takeshi Kudo
Proc. ASME. GT2017, Volume 8: Microturbines, Turbochargers and Small Turbomachines; Steam Turbines, V008T29A025, June 26–30, 2017
Paper No: GT2017-64047
https://doi.org/10.1115/GT2017-64047
View Paper titled, Experimental Investigation of the Grouped Blade Vibration for Steam Turbine by Non-Contact Sensors
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Topics: Blades, Sensors, Steam turbines, Vibration, Manufacturing, Air jets, Magnification, Materials properties, Pressure, Strain gages
Proceedings Papers

Steady and Unsteady Flow Measurements Under Low Load Conditions in a Low Pressure Model Steam Turbine

Kiyoshi Segawa, Shigeki Senoo, Hisashi Hamatake, Takeshi Kudo, Tateki Nakamura, Naoaki Shibashita
Proc. ASME. ICONE20-POWER2012, Volume 3: Thermal-Hydraulics; Turbines, Generators, and Auxiliaries, 833-839, July 30–August 3, 2012
Paper No: ICONE20-POWER2012-54862
https://doi.org/10.1115/ICONE20-POWER2012-54862
View Paper titled, Steady and Unsteady Flow Measurements Under Low Load Conditions in a Low Pressure Model Steam Turbine
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Topics: Pressure, Steam turbines, Stress, Unsteady flow, Flow (Dynamics), Blades, Fluctuations (Physics), Probes, Pressure measurement, Turbines
Journal Articles

Computations for Unsteady Compressible Flows in a Multistage Steam Turbine With Steam Properties at Low Load Operations

Shigeki Senoo, Kiyoshi Segawa, Hisashi Hamatake, Takeshi Kudo, Tateki Nakamura, Naoaki Shibashita
Journal: Journal of Engineering for Gas Turbines and Power
Article Type: Research Papers
J. Eng. Gas Turbines Power. October 2011, 133(10): 103001.
https://doi.org/10.1115/1.4003069
Published Online: May 3, 2011
View Article titled, Computations for Unsteady Compressible Flows in a Multistage Steam Turbine With Steam Properties at Low Load Operations
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Topics: Compressible flow, Flow (Dynamics), Pressure, Steam, Steam turbines, Stress, Unsteady flow, Computation, Blades, Temperature
Proceedings Papers

Computations for Unsteady Compressible Flows in a Multi-Stage Steam Turbine With Steam Properties at Low Load Operations

Shigeki Senoo, Kiyoshi Segawa, Hisashi Hamatake, Takeshi Kudo, Tateki Nakamura, Naoaki Shibashita
Proc. ASME. POWER2010, ASME 2010 Power Conference, 711-722, July 13–15, 2010
Paper No: POWER2010-27096
https://doi.org/10.1115/POWER2010-27096
View Paper titled, Computations for Unsteady Compressible Flows in a Multi-Stage Steam Turbine With Steam Properties at Low Load Operations
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Topics: Compressible flow, Computation, Steam, Steam turbines, Stress, Flow (Dynamics), Pressure, Blades, Design, Fluids
Proceedings Papers

A High Performance Optimized Reaction Blade for High Pressure Steam Turbines

Kiyoshi Segawa, Yoshio Shikano, Tsuyoshi Takano
Proc. ASME. POWER2004, ASME 2004 Power Conference, 307-314, March 30–April 1, 2004
Paper No: POWER2004-52110
https://doi.org/10.1115/POWER2004-52110
View Paper titled, A High Performance Optimized Reaction Blade for High Pressure Steam Turbines
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Topics: Blades, High pressure (Physics), Steam turbines, Design, Turbines, Chords (Trusses), Computational fluid dynamics, Energy dissipation, Flow (Dynamics), Leakage flows