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Hiroharu Ohyama
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Proceedings Papers

Investigations on the Flow Pattern and Aerodynamic Performance of Last Stage and Exhaust Hood for Large Power Steam Turbines

Zhigang Li, Jun Li, Xin Yan, Zhenping Feng, Hiroharu Ohyama, Ming Zhang
Proc. ASME. GT2012, Volume 6: Oil and Gas Applications; Concentrating Solar Power Plants; Steam Turbines; Wind Energy, 569-577, June 11–15, 2012
Paper No: GT2012-69291
DOI: https://doi.org/10.1115/GT2012-69291
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Topics: Exhaust systems, Flow (Dynamics), Steam turbines, Pressure, Internal flow, Blades, Bracing (Construction), Computational fluid dynamics, Computer software, Cross section (Physics)
Proceedings Papers

Effect of Material Damping of Steam Turbine Vane on Flutter Suppression

Yasutomo Kaneko, Kazushi Mori, Hiroharu Ohyama
Proc. ASME. GT2012, Volume 7: Structures and Dynamics, Parts A and B, 1161-1168, June 11–15, 2012
Paper No: GT2012-68089
DOI: https://doi.org/10.1115/GT2012-68089
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Topics: Damping, Flutter (Aerodynamics), Steam turbines, Finite element analysis, Stability, Aerodynamics, Fluid-dynamic forces, Fluids, Pressure, Vibration analysis
Proceedings Papers

Vibration Response Characteristics of Bladed Disk With Continuous Ring Type Structure Losing Shroud and Stab

Yasutomo Kaneko, Kazushi Mori, Hiroharu Ohyama
Proc. ASME. GT2010, Volume 6: Structures and Dynamics, Parts A and B, 791-798, June 14–18, 2010
Paper No: GT2010-22202
DOI: https://doi.org/10.1115/GT2010-22202
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Topics: Disks, Vibration, Blades, Finite element analysis, Random vibration, Resonance
Proceedings Papers

Development and Operating Experience of a Two-Casing 600MW Ultra-Super-Critical Steam Turbine

Yoshinori Tanaka, Hiroharu Ohyama, Naoto Tochitani, Tamiaki Nakazawa
Proc. ASME. POWER2005, ASME 2005 Power Conference, 589-595, April 5–7, 2005
Paper No: PWR2005-50344
DOI: https://doi.org/10.1115/PWR2005-50344
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Topics: Steam turbines, Pressure, Design, Blades, Steel, Turbines, Construction, Electricity (Physics), Flow (Dynamics), Machinery
Proceedings Papers

Development and Verification of 3000 rpm 48 Inch Integral Shroud Blade for Steam Turbine

Yasutomo Kaneko, Kazushi Mori, Hiroharu Ohyama
Proc. ASME. POWER2005, ASME 2005 Power Conference, 609-616, April 5–7, 2005
Paper No: PWR2005-50347
DOI: https://doi.org/10.1115/PWR2005-50347
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Topics: Blades, Steam turbines, Vibration, Design, Stress, Resonance, Centrifugal force, Damping, Friction, Reliability