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Keita Yamamoto
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Journal Articles

Establishment of Prediction Model for Cavitation Surge Frequency and Onset in an Inducer Considering Dynamic Characteristics of Cavitation Compliance and Mass Flow Gain Factor

Keita Yamamoto, Satoshi Ukai, Taro Fukuda, Satoshi Kawasaki, Hideyo Negishi
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. September 2023, 145(9): 091501.
Paper No: FE-23-1091
https://doi.org/10.1115/1.4062377
Published Online: May 15, 2023
View Article titled, Establishment of Prediction Model for Cavitation Surge Frequency and Onset in an Inducer Considering Dynamic Characteristics of Cavitation Compliance and Mass Flow Gain Factor
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Topics: Cavitation, Surges, Flow (Dynamics)
Proceedings Papers

Numerical Investigation at Nominal and Off-Design Operations Of a Supersonic Turbine for Liquid Rocket Engines With Full and Partial Admission Nozzles

Keita Yamamoto, Satoshi Ukai, Osamu Fukasawa, Taro Fukuda, Hideyo Negishi
Proc. ASME. GT2022, Volume 10B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing; Radial Turbomachinery Aerodynamics, V10BT30A021, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-82348
https://doi.org/10.1115/GT2022-82348
View Paper titled, Numerical Investigation at Nominal and Off-Design Operations Of a Supersonic Turbine for Liquid Rocket Engines With Full and Partial Admission Nozzles
Open the PDF for Numerical Investigation at Nominal and Off-Design Operations Of a Supersonic Turbine for Liquid Rocket Engines With Full and Partial Admission Nozzles in another window
Topics: Design, Nozzles, Rocket engines, Turbines, Internal flow, Energy dissipation, Flow (Dynamics), Simulation results, Engineering simulation, Flight
Journal Articles

Evaluation of a Dynamic Transfer Matrix for a Hydraulic Turbine

Keita Yamamoto, Koichi Yonezawa, Andres Müller, François Avellan, Yoshinobu Tsujimoto
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. April 2020, 142(4): 041204.
Paper No: FE-19-1526
https://doi.org/10.1115/1.4045437
Published Online: January 24, 2020
View Article titled, Evaluation of a Dynamic Transfer Matrix for a Hydraulic Turbine
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Topics: Cavitation, Flow (Dynamics), Pressure, Stress, Hydraulic turbines, Excitation, Stability, Fluctuations (Physics)
Journal Articles

Physical Mechanism of Interblade Vortex Development at Deep Part Load Operation of a Francis Turbine

Keita Yamamoto, Andres Müller, Arthur Favrel, François Avellan
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. November 2019, 141(11): 111113.
Paper No: FE-19-1053
https://doi.org/10.1115/1.4043989
Published Online: July 12, 2019
View Article titled, Physical Mechanism of Interblade Vortex Development at Deep Part Load Operation of a Francis Turbine
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Topics: Blades, Flow (Dynamics), Stress, Vortices, Energy dissipation, Flow separation, Francis turbines, Pressure, Computer simulation, Cavitation
Journal Articles

Measurement of the Self-Oscillating Vortex Rope Dynamics for Hydroacoustic Stability Analysis

Andres Müller, Keita Yamamoto, Sébastien Alligné, Koichi Yonezawa, Yoshinobu Tsujimoto, François Avellan
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. February 2016, 138(2): 021206.
Paper No: FE-14-1721
https://doi.org/10.1115/1.4031778
Published Online: November 4, 2015
View Article titled, Measurement of the Self-Oscillating Vortex Rope Dynamics for Hydroacoustic Stability Analysis
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Topics: Pressure, Ropes, Stability, Vortices, Cavitation, Fluctuations (Physics), Flow (Dynamics), Flow visualization, Dynamics (Mechanics), Cavities