1-20 of 25
Masaharu Uchiumi
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Journal Articles

18th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery (ISROMAC18)

Kazuyoshi Miyagawa, Arthur Favrel, Yuka Iga, Masaharu Uchiumi
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Editorial
J. Fluids Eng. December 2021, 143(12): 120301.
Paper No: FE-21-1440
https://doi.org/10.1115/1.4052283
Published Online: September 15, 2021
View Article titled, 18th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery (ISROMAC18)
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Topics: Dynamics (Mechanics), Machinery, Transport phenomena
Journal Articles

Experimental Study on Temperature Change by Cavitation Accompanying Self-Pressurization of Propellant for Small Rocket Engines

Kazuki Yasuda, Daisuke Nakata, Masaharu Uchiumi
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. December 2021, 143(12): 121103.
Paper No: FE-21-1176
https://doi.org/10.1115/1.4051729
Published Online: July 30, 2021
View Article titled, Experimental Study on Temperature Change by Cavitation Accompanying Self-Pressurization of Propellant for Small Rocket Engines
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Topics: Carbon dioxide, Flow (Dynamics), Fluids, Porosity, Pressure, Temperature, Two-phase flow, Cavitation, Rocket engines, Valves
Journal Articles

Fundamental Study on Injector Flow Characteristics of Self-Pressurizing Fluid for Small Rocket Engines

Kazuki Yasuda, Daisuke Nakata, Masaharu Uchiumi, Kugo Okada, Ryoji Imai
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. February 2021, 143(2): 021307.
Paper No: FE-20-1393
https://doi.org/10.1115/1.4048688
Published Online: November 4, 2020
View Article titled, Fundamental Study on Injector Flow Characteristics of Self-Pressurizing Fluid for Small Rocket Engines
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Topics: Ejectors, Flow (Dynamics), Pressure, Two-phase flow, Rocket engines, Firing, Combustion
Proceedings Papers

Fundamental Study on Injector Flow Characteristics of Self-Pressurizing Fluid for Small Rocket Engines

Kazuki Yasuda, Daisuke Nakata, Masaharu Uchiumi, Kugo Okada, Ryoji Imai
Proc. ASME. AJKFluids2019, Volume 3A: Fluid Applications and Systems, V03AT03A056, July 28–August 1, 2019
Publisher: American Society of Mechanical Engineers
Paper No: AJKFluids2019-5625
https://doi.org/10.1115/AJKFluids2019-5625
View Paper titled, Fundamental Study on Injector Flow Characteristics of Self-Pressurizing Fluid for Small Rocket Engines
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Topics: Ejectors, Flow (Dynamics), Fluids, Rocket engines, Two-phase flow
Proceedings Papers

Experimental Study of Temperature and Phase Transition of Liquid Oxygen at Ignition in Impinging Injector of Gas Generator

Hiromitsu Yagihashi, Daisuke Nakata, Ryojiro Minato, Inaho Yoshikawa, Koki Arimatsu, Masaharu Uchiumi
Proc. ASME. AJKFluids2019, Volume 3A: Fluid Applications and Systems, V03AT03A052, July 28–August 1, 2019
Publisher: American Society of Mechanical Engineers
Paper No: AJKFluids2019-4935
https://doi.org/10.1115/AJKFluids2019-4935
View Paper titled, Experimental Study of Temperature and Phase Transition of Liquid Oxygen at Ignition in Impinging Injector of Gas Generator
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Topics: Ejectors, Generators, Ignition, Oxygen, Phase transitions, Temperature, Transients (Dynamics)
Proceedings Papers

The Minimum Flow Rate of Liquid-Oxygen When Considering a Throttling of a Gas Generator Cycle Engine

Daisuke Nakata, Ryojiro Minato, Inaho Yoshikawa, Hiromitsu Yagihashi, Koki Arimatsu, Masaharu Uchiumi
Proc. ASME. AJKFluids2019, Volume 3A: Fluid Applications and Systems, V03AT03A055, July 28–August 1, 2019
Publisher: American Society of Mechanical Engineers
Paper No: AJKFluids2019-5621
https://doi.org/10.1115/AJKFluids2019-5621
View Paper titled, The Minimum Flow Rate of Liquid-Oxygen When Considering a Throttling of a Gas Generator Cycle Engine
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Topics: Cycles, Engines, Flashing, Flow (Dynamics), Generators, Oxygen, Pressure
Journal Articles

Nonlinear Analysis of Rotordynamic Fluid Forces in the Annular Plain Seal by Using Extended Bulk-Flow Analysis: Influence of Static Eccentricity and Whirling Amplitude

Koya Yamada, Atsushi Ikemoto, Tsuyoshi Inoue, Masaharu Uchiumi
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. February 2019, 141(2): 021017.
Paper No: GTP-18-1412
https://doi.org/10.1115/1.4041128
Published Online: October 4, 2018
View Article titled, Nonlinear Analysis of Rotordynamic Fluid Forces in the Annular Plain Seal by Using Extended Bulk-Flow Analysis: Influence of Static Eccentricity and Whirling Amplitude
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Topics: Flow (Dynamics), Fluids, Rotors, Whirls
Journal Articles

Thomas/Alford Force on a Partial-Admission Turbine for the Rocket Engine Turbopump

Kazuyuki Yada, Masaharu Uchiumi, Ken-ichi Funazaki
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. January 2019, 141(1): 011105.
Paper No: FE-17-1550
https://doi.org/10.1115/1.4040466
Published Online: June 29, 2018
View Article titled, Thomas/Alford Force on a Partial-Admission Turbine for the Rocket Engine Turbopump
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Topics: Turbines, Rocket engines, Rotors
Journal Articles

Nonlinear Analysis of Rotordynamic Fluid Forces in the Annular Plain Seal by Using Extended Perturbation Analysis of the Bulk-Flow Theory (Influence of Whirling Amplitude in the Case With Concentric Circular Whirl)

Atsushi Ikemoto, Tsuyoshi Inoue, Kazukiyo Sakamoto, Masaharu Uchiumi
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research-Article
J. Tribol. July 2018, 140(4): 041708.
Paper No: TRIB-17-1017
https://doi.org/10.1115/1.4039370
Published Online: April 3, 2018
View Article titled, Nonlinear Analysis of Rotordynamic Fluid Forces in the Annular Plain Seal by Using Extended Perturbation Analysis of the Bulk-Flow Theory (Influence of Whirling Amplitude in the Case With Concentric Circular Whirl)
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Topics: Flow (Dynamics), Fluids, Whirls, Boundary-value problems, Computational fluid dynamics, Pressure
Journal Articles

Numerical Analysis of Suppression Effect of Asymmetric Slit on Cavitation Instabilities in Cascade

Hiroki Kobayashi, Ryosuke Hagiwara, Satoshi Kawasaki, Masaharu Uchiumi, Kazuyuki Yada, Yuka Iga
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. February 2018, 140(2): 021302.
Paper No: FE-16-1670
https://doi.org/10.1115/1.4037989
Published Online: November 7, 2017
View Article titled, Numerical Analysis of Suppression Effect of Asymmetric Slit on Cavitation Instabilities in Cascade
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Topics: Blades, Cascades (Fluid dynamics), Cavitation, Flow (Dynamics), Numerical analysis, Pressure, Cavities
Journal Articles

Rotordynamic Forces Acting on a Two-Stage Inducer

Naoki Nagao, Katsuji Nagaura, Tsutomu Tamura, Satoshi Hasegawa, Masaharu Uchiumi
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. February 2018, 140(2): 021112.
Paper No: FE-16-1588
https://doi.org/10.1115/1.4037986
Published Online: November 3, 2017
View Article titled, Rotordynamic Forces Acting on a Two-Stage Inducer
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Topics: Cavitation, Control systems, Flow (Dynamics), Pressure, Vibration, Whirls, Rockets, Excitation systems, Magnetic bearings, Rotation
Journal Articles

One-Dimensional Analysis Method for Cavitation Instabilities of a Rotating Machinery

Satoshi Kawasaki, Takashi Shimura, Masaharu Uchiumi, Yuka Iga
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. February 2018, 140(2): 021113.
Paper No: FE-16-1597
https://doi.org/10.1115/1.4037987
Published Online: November 3, 2017
View Article titled, One-Dimensional Analysis Method for Cavitation Instabilities of a Rotating Machinery
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Topics: Cavitation, Flow (Dynamics), Eigenvalues, Whirls
Journal Articles

Erratum: “Load–Displacement Relationship of a Ball Bearing With Axial, Radial, and Angular Displacements for Both the Inner and Outer Rings” [ASME J. Tribol., 2016, 139(1), p. 011103; DOI: 10.1115/1.4033136]

Hiroyuki Ohta, Tomoya Sakaguchi, Masaharu Uchiumi
Journal: Journal of Tribology
Publisher: ASME
Article Type: Errata
J. Tribol. September 2017, 139(5): 057002.
Paper No: TRIB-16-1393
https://doi.org/10.1115/1.4036178
Published Online: May 24, 2017
View Article titled, Erratum: “Load–Displacement Relationship of a Ball Bearing With Axial, Radial, and Angular Displacements for Both the Inner and Outer Rings” [ASME J. Tribol., 2016, 139(1), p. 011103; DOI: 10.1115/1.4033136]
Open the PDF for Erratum: “Load–Displacement Relationship of a Ball Bearing With Axial, Radial, and Angular Displacements for Both the Inner and Outer Rings” [ASME J. Tribol., 2016, 139(1), p. 011103; DOI: 10.1115/1.4033136] in another window
Topics: Ball bearings, Bearing design, Bearings, Displacement, Rolling bearings, Stress
Proceedings Papers

Analytical Investigation on the Rotational Speed Dependence of the Rotordynamic Fluid Force: The Case of Concentric Circular Whirl in the Annular Plain Seal

Atsushi Ikemoto, Kazukiyo Sakamoto, Tsuyoshi Inoue, Masaharu Uchiumi
Proc. ASME. IMECE2016, Volume 7: Fluids Engineering, V007T09A011, November 11–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2016-66688
https://doi.org/10.1115/IMECE2016-66688
View Paper titled, Analytical Investigation on the Rotational Speed Dependence of the Rotordynamic Fluid Force: The Case of Concentric Circular Whirl in the Annular Plain Seal
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Topics: Fluids, Whirls, Machinery, Approximation, Rockets, Rotor vibration, Stability
Journal Articles

Load–Displacement Relationship of a Ball Bearing With Axial, Radial, and Angular Displacements for Both the Inner and Outer Rings

Hiroyuki Ohta, Tomoya Sakaguchi, Masaharu Uchiumi
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research-Article
J. Tribol. January 2017, 139(1): 011103.
Paper No: TRIB-15-1417
https://doi.org/10.1115/1.4033136
Published Online: July 20, 2016
View Article titled, Load–Displacement Relationship of a Ball Bearing With Axial, Radial, and Angular Displacements for Both the Inner and Outer Rings
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Topics: Ball bearings, Displacement, Stress
Proceedings Papers

Computational Analysis of Unsteady Flow in a Partial Admission Supersonic Turbine Stage

Yuki Tokuyama, Ken-ichi Funazaki, Hiromasa Kato, Noriyuki Shimiya, Mitsuru Shimagaki, Masaharu Uchiumi
Proc. ASME. GT2014, Volume 2D: Turbomachinery, V02DT44A021, June 16–20, 2014
Publisher: American Society of Mechanical Engineers
Paper No: GT2014-26071
https://doi.org/10.1115/GT2014-26071
View Paper titled, Computational Analysis of Unsteady Flow in a Partial Admission Supersonic Turbine Stage
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Topics: Turbines, Unsteady flow, Blades, Flow (Dynamics), Aerodynamics, Fluid-dynamic forces, Rotors, Shock waves, Computational fluid dynamics, Engines
Proceedings Papers

Stability of an Axial-Thrust Self-Balancing System

Takashi Shimura, Satoshi Kawasaki, Masaharu Uchiumi, Toshiya Kimura, Mitsuaki Hayashi, Jun Matsui
Proc. ASME. FEDSM2012, Volume 1: Symposia, Parts A and B, 453-460, July 8–12, 2012
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2012-72196
https://doi.org/10.1115/FEDSM2012-72196
View Paper titled, Stability of an Axial-Thrust Self-Balancing System
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Topics: Stability, Thrust, Rotor assembly, Orifices, Pumps, Vibration, Rockets, Turbine components, Fluids, Impellers
Proceedings Papers

Comparison of Rotordynamic Fluid Forces Between Closed Impeller and Open Impeller

Masaharu Uchiumi, Naoki Nagao, Yoshiki Yoshida, Masato Eguchi
Proc. ASME. FEDSM2012, Volume 1: Symposia, Parts A and B, 521-527, July 8–12, 2012
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2012-72348
https://doi.org/10.1115/FEDSM2012-72348
View Paper titled, Comparison of Rotordynamic Fluid Forces Between Closed Impeller and Open Impeller
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Topics: Fluids, Impellers, Whirls, Damping, Density, Design, Inertia (Mechanics), Magnetic bearings, Rockets, Rotor vibration
Journal Articles

Stability of an Axial Thrust Self-Balancing System

Takashi Shimura, Satoshi Kawasaki, Masaharu Uchiumi, Toshiya Kimura, Mitsuaki Hayashi, Jun Matsui
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. January 2013, 135(1): 011105.
Paper No: FE-12-1381
https://doi.org/10.1115/1.4023197
Published Online: January 18, 2013
View Article titled, Stability of an Axial Thrust Self-Balancing System
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Topics: Damping, Pistons, Stability, Thrust, Fluids, Internal flow
Proceedings Papers

Internal Flow and Axial Thrust Balancing of a Rocket Pump

Takashi Shimura, Satoshi Kawasaki, Masaharu Uchiumi, Jun Matsui
Proc. ASME. AJK2011, ASME-JSME-KSME 2011 Joint Fluids Engineering Conference: Volume 1, Symposia – Parts A, B, C, and D, 145-152, July 24–29, 2011
Publisher: American Society of Mechanical Engineers
Paper No: AJK2011-06027
https://doi.org/10.1115/AJK2011-06027
View Paper titled, Internal Flow and Axial Thrust Balancing of a Rocket Pump
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Topics: Internal flow, Pumps, Rockets, Thrust, Angular momentum, Boundary layers, Computational methods, Design, Pistons, Systems analysis