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Naohiko Takahashi
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Proceedings Papers

Morton Effect Calculation and Analysis of Shop Test Results for Single-Shaft Multistage Centrifugal Compressors

Naohiko Takahashi, Yohei Magara, Makoto Hemmi, Motoki Sato
Proc. ASME. GT2022, Volume 8B: Structures and Dynamics — Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V08BT26A006, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-80356
https://doi.org/10.1115/GT2022-80356
View Paper titled, Morton Effect Calculation and Analysis of Shop Test Results for Single-Shaft Multistage Centrifugal Compressors
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Topics: Bearings, Compressors
Proceedings Papers

Verification of Performance and Operating Characteristics of High Pressure Gas Injection Centrifugal Compressor

Kazutoshi Yanagihara, Haruo Miura, Hideo Nishida, Kenji Tanaka, Naohiko Takahashi, Manabu Yagi, Tomohiro Naruse, Brandon L. Ridens
Proc. ASME. GT2015, Volume 9: Oil and Gas Applications; Supercritical CO2 Power Cycles; Wind Energy, V009T24A019, June 15–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: GT2015-44027
https://doi.org/10.1115/GT2015-44027
View Paper titled, Verification of Performance and Operating Characteristics of High Pressure Gas Injection Centrifugal Compressor
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Topics: Compressors, High pressure (Physics), Deformation, Design, Rotordynamics, Stability
Journal Articles

Development of Scallop Cut Type Damper Seal for Centrifugal Compressors

Naohiko Takahashi, Haruo Miura, Mitsuhiro Narita, Noriyo Nishijima, Yohei Magara
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. March 2015, 137(3): 032509.
Paper No: GTP-14-1406
https://doi.org/10.1115/1.4028448
Published Online: October 7, 2014
View Article titled, Development of Scallop Cut Type Damper Seal for Centrifugal Compressors
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Topics: Computational fluid dynamics, Dampers, Flow (Dynamics), Rotors, Compressors, Pressure, Friction
Proceedings Papers

Development of Scallop Cut Type Damper Seal for Centrifugal Compressors

Naohiko Takahashi, Haruo Miura, Mitsuhiro Narita, Noriyo Nishijima, Yohei Magara
Proc. ASME. GT2014, Volume 7B: Structures and Dynamics, V07BT32A019, June 16–20, 2014
Publisher: American Society of Mechanical Engineers
Paper No: GT2014-26693
https://doi.org/10.1115/GT2014-26693
View Paper titled, Development of Scallop Cut Type Damper Seal for Centrifugal Compressors
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Topics: Compressors, Dampers, Rotors, Damping, Stators, Computational fluid dynamics, Flow (Dynamics), High pressure (Physics), Honeycomb structures, Manufacturing
Journal Articles

Natural Frequency Shift in a Centrifugal Compressor Impeller for High-Density Gas Applications

Yohei Magara, Kazuyuki Yamaguchi, Haruo Miura, Naohiko Takahashi, Mitsuhiro Narita
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. January 2013, 135(1): 011014.
Paper No: TURBO-11-1170
https://doi.org/10.1115/1.4006423
Published Online: November 6, 2012
View Article titled, Natural Frequency Shift in a Centrifugal Compressor Impeller for High-Density Gas Applications
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Topics: Density, Impellers, Vibration, Disks, Pressure, Compressor impellers, Compressors, Resonance
Proceedings Papers

Rotordynamic Evaluation of Centrifugal Compressor Using Electromagnetic Exciter

Naohiko Takahashi, Yohei Magara, Mitsuhiro Narita, Haruo Miura
Proc. ASME. GT2011, Volume 6: Structures and Dynamics, Parts A and B, 375-382, June 6–10, 2011
Publisher: American Society of Mechanical Engineers
Paper No: GT2011-45829
https://doi.org/10.1115/GT2011-45829
View Paper titled, Rotordynamic Evaluation of Centrifugal Compressor Using Electromagnetic Exciter
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Topics: Compressors, Excitation systems, Stability, Excitation, Rotors, Frequency response, High pressure (Physics), Bearings, Damping, Whirls
Proceedings Papers

Natural Frequency Shift in a Centrifugal Compressor Impeller for High-Density Gas Applications

Yohei Magara, Kazuyuki Yamaguchi, Haruo Miura, Naohiko Takahashi, Mitsuhiro Narita
Proc. ASME. GT2011, Volume 6: Structures and Dynamics, Parts A and B, 1393-1401, June 6–10, 2011
Publisher: American Society of Mechanical Engineers
Paper No: GT2011-46297
https://doi.org/10.1115/GT2011-46297
View Paper titled, Natural Frequency Shift in a Centrifugal Compressor Impeller for High-Density Gas Applications
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Topics: Compressor impellers, Density, Compressors, Impellers, Water, Resonance, Computational methods, Design, Diffusers, Fluctuations (Physics)
Journal Articles

Rotordynamic Evaluation of Centrifugal Compressor Using Electromagnetic Exciter

Naohiko Takahashi, Yohei Magara, Mitsuhiro Narita, Haruo Miura
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research Papers
J. Eng. Gas Turbines Power. March 2012, 134(3): 032505.
https://doi.org/10.1115/1.4004439
Published Online: January 4, 2012
View Article titled, Rotordynamic Evaluation of Centrifugal Compressor Using Electromagnetic Exciter
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Topics: Bearings, Compressors, Damping, Eigenvalues, Excitation systems, High pressure (Physics), Rotors, Stability, Frequency response, Magnetic bearings
Proceedings Papers

Evaluation of Q-Values of a Rotor-Bearing System Using a Modal Open Loop Transfer Function

Hiroyuki Fujiwara, Yasuo Fukushima, Naohiko Takahashi, Hiroto Oyama, Osami Matsushita
Proc. ASME. GT2009, Volume 6: Structures and Dynamics, Parts A and B, 901-908, June 8–12, 2009
Publisher: American Society of Mechanical Engineers
Paper No: GT2009-59723
https://doi.org/10.1115/GT2009-59723
View Paper titled, Evaluation of Q-Values of a Rotor-Bearing System Using a Modal Open Loop Transfer Function
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Topics: Bearings, Rotors, Transfer functions, Damping, Machinery, Sensors, Ball bearings, Dampers, Displacement, Impulse (Physics)
Proceedings Papers

Natural Frequencies of Centrifugal Compressor Impellers for High Density Gas Applications

Yohei Magara, Mitsuhiro Narita, Kazuyuki Yamaguchi, Naohiko Takahashi, Tetsuya Kuwano
Proc. ASME. IMECE2008, Volume 5: Design, Analysis, Control and Diagnosis of Fluid Power Systems, 107-114, October 31–November 6, 2008
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2008-67278
https://doi.org/10.1115/IMECE2008-67278
View Paper titled, Natural Frequencies of Centrifugal Compressor Impellers for High Density Gas Applications
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Topics: Compressor impellers, Density, Fluid structure interaction
Proceedings Papers

An Evaluation of Stability Indices Using Sensitivity Functions for Active Magnetic Bearing Supported High-Speed Rotor

Naohiko Takahashi, Hiroyuki Fujiwara, Makoto Ito, Yasuo Fukushima, Osami Matsushita
Proc. ASME. IDETC-CIE2005, Volume 1: 20th Biennial Conference on Mechanical Vibration and Noise, Parts A, B, and C, 1153-1162, September 24–28, 2005
Publisher: American Society of Mechanical Engineers
Paper No: DETC2005-84836
https://doi.org/10.1115/DETC2005-84836
View Paper titled, An Evaluation of Stability Indices Using Sensitivity Functions for Active Magnetic Bearing Supported High-Speed Rotor
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Topics: Magnetic bearings, Rotors, Stability, Compressors, Feedback, Separation (Technology), Signals, Transfer functions, Turbochargers
Journal Articles

An Evaluation of Stability Indices Using Sensitivity Functions for Active Magnetic Bearing Supported High-Speed Rotor

Naohiko Takahashi, Hiroyuki Fujiwara, Osami Matsushita, Makoto Ito, Yasuo Fukushima
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Technical Papers
J. Vib. Acoust. April 2007, 129(2): 230–238.
https://doi.org/10.1115/1.2424979
Published Online: October 5, 2006
View Article titled, An Evaluation of Stability Indices Using Sensitivity Functions for Active Magnetic Bearing Supported High-Speed Rotor
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Topics: Stability, Transfer functions, Rotors, Magnetic bearings, Rotation