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Seiichi Ibaraki
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Proceedings Papers

Flow Field Analysis and Optimized Design of a Centrifugal Compressor Volute

Pablo Ale Martos, Maria Esperanza Barrera-Medrano, Ricardo Martinez-Botas, Isao Tomita, Tadashi Kanzaka, Seiichi Ibaraki
Proc. ASME. GT2021, Volume 2C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V02CT34A037, June 7–11, 2021
Paper No: GT2021-59879
DOI: https://doi.org/10.1115/GT2021-59879
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Topics: Compressors, Design, Flow (Dynamics), Surges, Automotive engines, Carbon, Design methodology, Engines, Impellers, Pressure
Proceedings Papers

Study on Analytical Method for Thermal and Flow Field of a Turbocharger With the Catalyst Unit

Tsuyoshi Kitamura, Seiichi Ibaraki, Yuichi Kihara, Toru Hoshi, Motoki Ebisu
Proc. ASME. GT2019, Volume 8: Microturbines, Turbochargers, and Small Turbomachines; Steam Turbines, V008T26A007, June 17–21, 2019
Paper No: GT2019-90451
DOI: https://doi.org/10.1115/GT2019-90451
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Topics: Catalysts, Flow (Dynamics), Turbochargers, Heat transfer, Bearings, Design, Fluids, Heating, Modeling, Thermal management
Journal Articles

On the Effect of Engine Pulsations on the Performance of a Turbocharger Centrifugal Compressor

Maria Esperanza Barrera-Medrano, Ricardo Martinez-Botas, Isao Tomita, Seiichi Ibaraki
Journal: Journal of Engineering for Gas Turbines and Power
Article Type: Research-Article
J. Eng. Gas Turbines Power. August 2019, 141(8): 081001.
Paper No: GTP-18-1493
DOI: https://doi.org/10.1115/1.4042609
Published Online: February 11, 2019
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Topics: Compressors, Flow (Dynamics), Surges, Pressure, Compression
Proceedings Papers

Optimum Aerodynamic Design of Centrifugal Compressor Impeller Using an Inverse Method Based on Meridional Viscous Flow Analysis

Nobuhito Oka, Masato Furukawa, Kazutoyo Yamada, Sasuga Itou, Seiichi Ibaraki, Kenichiro Iwakiri, Yoshihiro Hayashi
Proc. ASME. GT2017, Volume 2C: Turbomachinery, V02CT44A013, June 26–30, 2017
Paper No: GT2017-63539
DOI: https://doi.org/10.1115/GT2017-63539
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Topics: Compressor impellers, Design, Viscous flow, Blades, Design methodology, Flow (Dynamics), Optimization, Experimental analysis, Flow separation, Genetic algorithms
Journal Articles

Effect of Exit Pressure Pulsation on the Performance and Stability Limit of a Turbocharger Centrifugal Compressor

Maria Esperanza Barrera-Medrano, Peter Newton, Ricardo Martinez-Botas, Srithar Rajoo, Isao Tomita, Seiichi Ibaraki
Journal: Journal of Engineering for Gas Turbines and Power
Article Type: Research-Article
J. Eng. Gas Turbines Power. May 2017, 139(5): 052601.
Paper No: GTP-16-1366
DOI: https://doi.org/10.1115/1.4034689
Published Online: December 21, 2016
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Topics: Compressors, Flow (Dynamics), Pressure, Surges, Valves, Engines, Compression, Stability, Pulsatile flow
Proceedings Papers

Effect of Exit Pressure Pulsation on the Performance and Stability Limit of a Turbocharger Centrifugal Compressor

Maria Esperanza Barrera-Medrano, Peter Newton, Ricardo Martinez-Botas, Srithar Rajoo, Isao Tomita, Seiichi Ibaraki
Proc. ASME. GT2016, Volume 2D: Turbomachinery, V02DT42A003, June 13–17, 2016
Paper No: GT2016-56109
DOI: https://doi.org/10.1115/GT2016-56109
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Topics: Compressors, Pressure, Stability, Turbochargers, Surges, Valves, Flow (Dynamics), Compression, Diffusers, Dynamics (Mechanics)
Proceedings Papers

Effects of Flow Path Height of Impeller Exit and Diffuser on Flow Fields in a Transonic Centrifugal Compressor

Isao Tomita, Seiichi Ibaraki, Koji Wakashima, Masato Furukawa, Kazutoyo Yamada, Dai Kanzaki
Proc. ASME. GT2015, Volume 2C: Turbomachinery, V02CT42A029, June 15–19, 2015
Paper No: GT2015-43271
DOI: https://doi.org/10.1115/GT2015-43271
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Topics: Compressors, Diffusers, Flow (Dynamics), Impellers, Turbochargers, Carbon, Eddies (Fluid dynamics), Emissions, Engines, Internal flow
Proceedings Papers

Influence of Volute Cross-Sectional Shape of a Nozzleless Turbocharger Turbine Under Pulsating Flow Conditions

Mingyang Yang, Ricardo Martinez-Botas, Srithar Rajoo, Takao Yokoyama, Seiichi Ibaraki
Proc. ASME. GT2014, Volume 2D: Turbomachinery, V02DT42A025, June 16–20, 2014
Paper No: GT2014-26150
DOI: https://doi.org/10.1115/GT2014-26150
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Topics: Pulsatile flow, Shapes, Turbines, Turbochargers, Computational fluid dynamics, Flow (Dynamics), Rotors, Cycles
Proceedings Papers

The Effect of Tip Leakage Vortex for Operating Range Enhancement of Centrifugal Compressor

Isao Tomita, Seiichi Ibaraki, Masato Furukawa, Kazutoyo Yamada
Proc. ASME. GT2012, Volume 8: Turbomachinery, Parts A, B, and C, 735-743, June 11–15, 2012
Paper No: GT2012-68947
DOI: https://doi.org/10.1115/GT2012-68947
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Topics: Compressors, Leakage, Vortices, Flow (Dynamics), Turbochargers, Blades, Engines, Fuel consumption, Geometry, Pressure
Journal Articles

The Effect of Tip Leakage Vortex for Operating Range Enhancement of Centrifugal Compressor

Isao Tomita, Seiichi Ibaraki, Masato Furukawa, Kazutoyo Yamada
Journal: Journal of Turbomachinery
Article Type: Research-Article
J. Turbomach. September 2013, 135(5): 051020.
Paper No: TURBO-12-1149
DOI: https://doi.org/10.1115/1.4007894
Published Online: June 28, 2013
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Topics: Compressors, Blades, Flow (Dynamics), Vortices, Internal flow
Proceedings Papers

The Role of Tip Leakage Vortex Breakdown in Flow Fields and Aerodynamic Characteristics of Transonic Centrifugal Compressor Impellers

Kazutoyo Yamada, Masato Furukawa, Hisataka Fukushima, Seiichi Ibaraki, Isao Tomita
Proc. ASME. GT2011, Volume 7: Turbomachinery, Parts A, B, and C, 2111-2123, June 6–10, 2011
Paper No: GT2011-46253
DOI: https://doi.org/10.1115/GT2011-46253
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Topics: Compressor impellers, Flow (Dynamics), Leakage, Vortices, Impellers, Blades, Design, Fluctuations (Physics), Pressure, Pressure transducers
Proceedings Papers

Comparative Study on Tip Clearance Flow Fields in Two Types of Transonic Centrifugal Compressor Impeller With Splitter Blades

Kazutoyo Yamada, Yusuke Tamagawa, Hisataka Fukushima, Masato Furukawa, Seiichi Ibaraki, Ken-ichiro Iwakiri
Proc. ASME. GT2010, Volume 7: Turbomachinery, Parts A, B, and C, 2053-2063, June 14–18, 2010
Paper No: GT2010-23345
DOI: https://doi.org/10.1115/GT2010-23345
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Topics: Blades, Clearances (Engineering), Compressor impellers, Flow (Dynamics), Compressors, Impellers, Leakage, Pressure, Simulation, Vortices
Journal Articles

Numerical Analysis of the Vaned Diffuser of a Transonic Centrifugal Compressor

Michele Marconcini, Filippo Rubechini, Andrea Arnone, Seiichi Ibaraki
Journal: Journal of Turbomachinery
Article Type: Research Papers
J. Turbomach. October 2010, 132(4): 041012.
DOI: https://doi.org/10.1115/1.2988481
Published Online: May 5, 2010
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Topics: Blades, Compressors, Diffusers, Flow (Dynamics), Impellers, Computation, Numerical analysis, Pressure
Proceedings Papers

Design and Off-Design Flow Fields of a Transonic Centrifugal Compressor Impeller

Seiichi Ibaraki, Kunio Sumida, Toru Suita
Proc. ASME. GT2009, Volume 7: Turbomachinery, Parts A and B, 1375-1384, June 8–12, 2009
Paper No: GT2009-59986
DOI: https://doi.org/10.1115/GT2009-59986
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Topics: Compressor impellers, Design, Flow (Dynamics), Compressors, Shock waves, Impellers, Leakage, Turbochargers, Vortices, Computation
Proceedings Papers

Unsteady and Three-Dimensional Flow Phenomena in a Transonic Centrifugal Compressor Impeller at Rotating Stall

Kenichiro Iwakiri, Masato Furukawa, Seiichi Ibaraki, Isao Tomita
Proc. ASME. GT2009, Volume 7: Turbomachinery, Parts A and B, 1611-1622, June 8–12, 2009
Paper No: GT2009-59516
DOI: https://doi.org/10.1115/GT2009-59516
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Topics: Compressor impellers, Flow (Dynamics), Compressors, Blades, Impellers, Separation (Technology), Vortices, Eddies (Fluid dynamics), Internal flow, Leakage
Proceedings Papers

Design and Off-Design Numerical Investigation of a Transonic Double-Splitter Centrifugal Compressor

Michele Marconcini, Filippo Rubechini, Andrea Arnone, Seiichi Ibaraki
Proc. ASME. GT2008, Volume 6: Turbomachinery, Parts A, B, and C, 1571-1578, June 9–13, 2008
Paper No: GT2008-50759
DOI: https://doi.org/10.1115/GT2008-50759
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Topics: Compressors, Design, Flow (Dynamics), Impellers, Blades, Computation, Cross section (Physics), Diffusers, Flow measurement, High pressure (Physics)
Proceedings Papers

Vortical Flow Structure and Loss Generation Process in a Transonic Centrifugal Compressor Impeller

Seiichi Ibaraki, Masato Furukawa, Kenichiro Iwakiri, Kazuya Takahashi
Proc. ASME. GT2007, Volume 6: Turbo Expo 2007, Parts A and B, 1089-1098, May 14–17, 2007
Paper No: GT2007-27791
DOI: https://doi.org/10.1115/GT2007-27791
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Topics: Compressor impellers, Vortex flow, Flow (Dynamics), Vortices, Impellers, Leakage, Shock waves, Breakdown (Electricity), Compressors, Computation
Proceedings Papers

Numerical Analysis of the Vaned Diffuser of a Transonic Centrifugal Compressor

Michele Marconcini, Filippo Rubechini, Andrea Arnone, Seiichi Ibaraki
Proc. ASME. GT2007, Volume 6: Turbo Expo 2007, Parts A and B, 987-995, May 14–17, 2007
Paper No: GT2007-27200
DOI: https://doi.org/10.1115/GT2007-27200
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Topics: Compressors, Diffusers, Numerical analysis, Flow (Dynamics), Impellers, Flow measurement, High pressure (Physics), Particulate matter, Turbochargers
Proceedings Papers

Aerodynamics of a Transonic Centrifugal Compressor Impeller

Seiichi Ibaraki, Tetsuya Matsuo, Hiroshi Kuma, Kunio Sumida, Toru Suita
Proc. ASME. GT2002, Volume 5: Turbo Expo 2002, Parts A and B, 473-480, June 3–6, 2002
Paper No: GT2002-30374
DOI: https://doi.org/10.1115/GT2002-30374
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Topics: Aerodynamics, Blades, Boundary layers, Compressor impellers, Compressors, Dimensions, Engines, Flow (Dynamics), Flow measurement, High pressure (Physics)
Proceedings Papers

Numerical Investigation of a Transonic Centrifugal Compressor

Michele Marconcini, Filippo Rubechini, Andrea Arnone, Seiichi Ibaraki
Proc. ASME. GT2006, Volume 6: Turbomachinery, Parts A and B, 1005-1012, May 8–11, 2006
Paper No: GT2006-90098
DOI: https://doi.org/10.1115/GT2006-90098
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Topics: Compressors, Flow (Dynamics), Impellers, Blades, Shock waves, Boundary layers, Clearances (Engineering), Cross section (Physics), Diffusers, Flow measurement