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Journal Articles

Effect of Channel Size on Air-Cooling Performance in Interior Permanent Magnet Motor Driving Aviation Fans at High Altitude

Yu Ito, Toshinori Watanabe, Naoki Seki, Karin Hirakawa, Tomoya Inoue, Takehiro Himeno
Journal: Journal of Engineering for Gas Turbines and Power
Article Type: Research-Article
J. Eng. Gas Turbines Power. April 2023, 145(4): 041016.
Paper No: GTP-22-1453
DOI: https://doi.org/10.1115/1.4055980
Published Online: December 13, 2022
View Article titled, Effect of Channel Size on Air-Cooling Performance in Interior Permanent Magnet Motor Driving Aviation Fans at High Altitude
Click here to open pdf in another window PDF for Effect of Channel Size on Air-Cooling Performance in Interior Permanent Magnet Motor Driving Aviation Fans at High Altitude
Topics: Cooling, Engines, Heat exchangers, Heat transfer, Motors, Permanent magnets, Pressure, Rotors, Stators, Temperature
Proceedings Papers

Effect of Channel Size on Air-Cooling Performance in Interior Permanent Magnet (IPM) Motor Driving Aviation Fans at High Altitude

Yu Ito, Toshinori Watanabe, Naoki Seki, Karin Hirakawa, Tomoya Inoue, Takehiro Himeno
Proc. ASME. GT2022, Volume 1: Aircraft Engine; Ceramics and Ceramic Composites, V001T01A004, June 13–17, 2022
Paper No: GT2022-79379
DOI: https://doi.org/10.1115/GT2022-79379
View Paper titled, Effect of Channel Size on Air-Cooling Performance in Interior Permanent Magnet (IPM) Motor Driving Aviation Fans at High Altitude
Click here to open pdf in another window PDF for Effect of Channel Size on Air-Cooling Performance in Interior Permanent Magnet (IPM) Motor Driving Aviation Fans at High Altitude
Topics: Aviation, Cooling, Engines, Fans, Motors, Permanent magnets, Propulsion
Journal Articles

Effect of Shock Wave Behavior on Unsteady Aerodynamic Characteristics of Oscillating Transonic Compressor Cascade

Jiuliang Gan, Toshinori Watanabe, Takehiro Himeno
Journal: Journal of Engineering for Gas Turbines and Power
Article Type: Research-Article
J. Eng. Gas Turbines Power. January 2022, 144(1): 011025.
Paper No: GTP-21-1312
DOI: https://doi.org/10.1115/1.4052159
Published Online: October 26, 2021
View Article titled, Effect of Shock Wave Behavior on Unsteady Aerodynamic Characteristics of Oscillating Transonic Compressor Cascade
Click here to open pdf in another window PDF for Effect of Shock Wave Behavior on Unsteady Aerodynamic Characteristics of Oscillating Transonic Compressor Cascade
Topics: Blades, Flow (Dynamics), Oscillations, Pressure, Shock (Mechanics), Shock waves, Cascades (Fluid dynamics), Aerodynamics, Fluid-dynamic forces, Computational fluid dynamics
Proceedings Papers

Effect of Shock Wave Behavior on Unsteady Aerodynamic Characteristics of Oscillating Transonic Compressor Cascade

Jiuliang Gan, Toshinori Watanabe, Takehiro Himeno
Proc. ASME. GT2021, Volume 9A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Design and Engineering, V09AT23A014, June 7–11, 2021
Paper No: GT2021-59416
DOI: https://doi.org/10.1115/GT2021-59416
View Paper titled, Effect of Shock Wave Behavior on Unsteady Aerodynamic Characteristics of Oscillating Transonic Compressor Cascade
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Topics: Cascades (Fluid dynamics), Compressors, Oscillations, Shock waves
Proceedings Papers

Unsteady Flow Simulation of Buoyancy-Driven Flows in High-Pressure Compressor Disk Cavities

Atsushi Tateishi, Toshinori Watanabe, Takehiro Himeno
Proc. ASME. GT2018, Volume 2A: Turbomachinery, V02AT45A019, June 11–15, 2018
Paper No: GT2018-76327
DOI: https://doi.org/10.1115/GT2018-76327
View Paper titled, Unsteady Flow Simulation of Buoyancy-Driven Flows in High-Pressure Compressor Disk Cavities
Click here to open pdf in another window PDF for Unsteady Flow Simulation of Buoyancy-Driven Flows in High-Pressure Compressor Disk Cavities
Topics: Buoyancy, Cavities, Compressors, Disks, Flow (Dynamics), High pressure (Physics), Simulation, Unsteady flow, Fluctuations (Physics), Temperature distribution
Proceedings Papers

The Behavior of the Casing Boundary Layer With the Presence of Tip Leakage Vortex

Xi Nan, Feng Lin, Takehiro Himeno, Toshinori Watanabe
Proc. ASME. GT2018, Volume 2A: Turbomachinery, V02AT39A018, June 11–15, 2018
Paper No: GT2018-75916
DOI: https://doi.org/10.1115/GT2018-75916
View Paper titled, The Behavior of the Casing Boundary Layer With the Presence of Tip Leakage Vortex
Click here to open pdf in another window PDF for The Behavior of the Casing Boundary Layer With the Presence of Tip Leakage Vortex
Topics: Boundary layers, Leakage, Vortices, Flow (Dynamics), Compressors, Separation (Technology), Skin friction (Fluid dynamics), Blades, Pressure
Journal Articles

Unsteady Pressure Measurement on Oscillating Blade in Transonic Flow Using Fast-Response Pressure-Sensitive Paint

Toshinori Watanabe, Toshihiko Azuma, Seiji Uzawa, Takehiro Himeno, Chihiro Inoue
Journal: Journal of Turbomachinery
Article Type: Research-Article
J. Turbomach. May 2018, 140(6): 061003.
Paper No: TURBO-17-1196
DOI: https://doi.org/10.1115/1.4039180
Published Online: April 18, 2018
View Article titled, Unsteady Pressure Measurement on Oscillating Blade in Transonic Flow Using Fast-Response Pressure-Sensitive Paint
Click here to open pdf in another window PDF for Unsteady Pressure Measurement on Oscillating Blade in Transonic Flow Using Fast-Response Pressure-Sensitive Paint
Topics: Blades, Pressure
Proceedings Papers

Unsteady Pressure Measurement on Oscillating Blade in Transonic Flow Using Fast-Response Pressure-Sensitive Paint

Toshinori Watanabe, Toshihiko Azuma, Seiji Uzawa, Takehiro Himeno, Chihiro Inoue
Proc. ASME. GT2017, Volume 7B: Structures and Dynamics, V07BT36A013, June 26–30, 2017
Paper No: GT2017-64211
DOI: https://doi.org/10.1115/GT2017-64211
View Paper titled, Unsteady Pressure Measurement on Oscillating Blade in Transonic Flow Using Fast-Response Pressure-Sensitive Paint
Click here to open pdf in another window PDF for Unsteady Pressure Measurement on Oscillating Blade in Transonic Flow Using Fast-Response Pressure-Sensitive Paint
Topics: Blades, Paints, Pressure, Pressure measurement, Transonic flow, Cascades (Fluid dynamics), Aerodynamics, Fluid-dynamic forces, Flutter (Aerodynamics)
Proceedings Papers

Development and Validation of a Compressible Large-Eddy Simulation Code With Overset Mesh Method

Atsushi Tateishi, Toshinori Watanabe, Takehiro Himeno
Proc. ASME. GT2017, Volume 2B: Turbomachinery, V02BT41A031, June 26–30, 2017
Paper No: GT2017-64195
DOI: https://doi.org/10.1115/GT2017-64195
View Paper titled, Development and Validation of a Compressible Large-Eddy Simulation Code With Overset Mesh Method
Click here to open pdf in another window PDF for Development and Validation of a Compressible Large-Eddy Simulation Code With Overset Mesh Method
Topics: Large eddy simulation, Computational fluid dynamics, Flow (Dynamics), Turbulence, Bubbles, Channel flow, Circular cylinders, Density, Design, Separation (Technology)
Proceedings Papers

Statistical Sensitivity Study of Frequency Mistuning on the Prediction of the Flutter Boundary in a Transonic Fan

Atsushi Tateishi, Toshinori Watanabe, Takehiro Himeno, Mizuho Aotsuka, Takeshi Murooka
Proc. ASME. GT2016, Volume 7B: Structures and Dynamics, V07BT34A017, June 13–17, 2016
Paper No: GT2016-57295
DOI: https://doi.org/10.1115/GT2016-57295
View Paper titled, Statistical Sensitivity Study of Frequency Mistuning on the Prediction of the Flutter Boundary in a Transonic Fan
Click here to open pdf in another window PDF for Statistical Sensitivity Study of Frequency Mistuning on the Prediction of the Flutter Boundary in a Transonic Fan
Topics: Flutter (Aerodynamics), Blades, Damping, Simulation, Aerodynamics, Computational fluid dynamics, Eigenvalues, Equations of motion, Fluid structure interaction, Fluid-dynamic forces
Proceedings Papers

Numerical Analysis of Transonic Compressor With Various Tip Clearance Gap

Yasunori Sakuma, Toshinori Watanabe, Takehiro Himeno
Proc. ASME. GT2016, Volume 2A: Turbomachinery, V02AT37A053, June 13–17, 2016
Paper No: GT2016-58117
DOI: https://doi.org/10.1115/GT2016-58117
View Paper titled, Numerical Analysis of Transonic Compressor With Various Tip Clearance Gap
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Topics: Clearances (Engineering), Compressors, Numerical analysis, Flow (Dynamics), Blades, Separation (Technology), Leakage flows, Rotors, Boundary layers, Leakage
Proceedings Papers

Numerical and Experimental Investigation on Spray Flux Distribution Produced by Liquid Sheet Atomization

Chihiro Inoue, Atsushi Shimizu, Toshinori Watanabe, Takehiro Himeno, Seiji Uzawa
Proc. ASME. GT2015, Volume 4B: Combustion, Fuels and Emissions, V04BT04A022, June 15–19, 2015
Paper No: GT2015-43364
DOI: https://doi.org/10.1115/GT2015-43364
View Paper titled, Numerical and Experimental Investigation on Spray Flux Distribution Produced by Liquid Sheet Atomization
Click here to open pdf in another window PDF for Numerical and Experimental Investigation on Spray Flux Distribution Produced by Liquid Sheet Atomization
Topics: Sprays, Particulate matter, Drops, Ejectors, Flow (Dynamics), Flow visualization, Jets, Numerical analysis, Transients (Dynamics), Video cameras
Proceedings Papers

Unsteady Flow Simulation of Leading-Edge Separation in Thin-Airfoil Cascade: A Modification to Turbulence Model

Atsushi Tateishi, Toshinori Watanabe, Takehiro Himeno, Chihiro Inoue
Proc. ASME. GT2015, Volume 2B: Turbomachinery, V02BT39A040, June 15–19, 2015
Paper No: GT2015-43849
DOI: https://doi.org/10.1115/GT2015-43849
View Paper titled, Unsteady Flow Simulation of Leading-Edge Separation in Thin-Airfoil Cascade: A Modification to Turbulence Model
Click here to open pdf in another window PDF for Unsteady Flow Simulation of Leading-Edge Separation in Thin-Airfoil Cascade: A Modification to Turbulence Model
Topics: Airfoils, Cascades (Fluid dynamics), Separation (Technology), Simulation, Turbulence, Unsteady flow, Reynolds-averaged Navier–Stokes equations, Bubbles, Pressure, Emission spectroscopy
Proceedings Papers

Aerodynamic Damping Characteristics of a Transonic Turbine Cascade

Mizuho Aotsuka, Toshinori Watanabe, Yasuo Machida
Proc. ASME. GT1999, Volume 4: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; IGTI Scholar Award; General, V004T03A008, June 7–10, 1999
Paper No: 99-GT-050
DOI: https://doi.org/10.1115/99-GT-050
View Paper titled, Aerodynamic Damping Characteristics of a Transonic Turbine Cascade
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Topics: Cascades (Fluid dynamics), Damping, Turbines, Design, Blades, Oscillations, Pressure, Aerodynamics, Computer simulation, Flow (Dynamics)
Proceedings Papers

Numerical Analysis of Flow in a Transonic Compressor With a Single Circumferential Casing Groove: Application to Two Different Compressor Rotors

Yasunori Sakuma, Toshinori Watanabe, Takehiro Himeno, Dai Kato, Takeshi Murooka, Yukari Shuto
Proc. ASME. GT2014, Volume 2A: Turbomachinery, V02AT37A044, June 16–20, 2014
Paper No: GT2014-26691
DOI: https://doi.org/10.1115/GT2014-26691
View Paper titled, Numerical Analysis of Flow in a Transonic Compressor With a Single Circumferential Casing Groove: Application to Two Different Compressor Rotors
Click here to open pdf in another window PDF for Numerical Analysis of Flow in a Transonic Compressor With a Single Circumferential Casing Groove: Application to Two Different Compressor Rotors
Topics: Compressors, Flow (Dynamics), Numerical analysis, Rotors, Leakage flows, Stability, Blades, Clearances (Engineering), Computational fluid dynamics, Design
Proceedings Papers

Multimode Flutter Analysis of Transonic Fan Using FSI Simulation

Atsushi Tateishi, Toshinori Watanabe, Takehiro Himeno, Chihiro Inoue
Proc. ASME. GT2014, Volume 7B: Structures and Dynamics, V07BT35A019, June 16–20, 2014
Paper No: GT2014-26702
DOI: https://doi.org/10.1115/GT2014-26702
View Paper titled, Multimode Flutter Analysis of Transonic Fan Using FSI Simulation
Click here to open pdf in another window PDF for Multimode Flutter Analysis of Transonic Fan Using FSI Simulation
Topics: Fluid structure interaction, Flutter (Aerodynamics), Simulation, Blades, Aerodynamics, Cascades (Fluid dynamics), Damping, Deformation, Eigenvalues, Fluid-dynamic forces
Proceedings Papers

Suppression of Supersonic Jet Noise From Rectangular Nozzle by Microjet Injection: Influence of Main Jet Condition

Ryuichi Okada, Toshinori Watanabe, Seiji Uzawa, Takehiro Himeno, Tsutomu Oishi
Proc. ASME. GT2013, Volume 2: Aircraft Engine; Coal, Biomass and Alternative Fuels; Cycle Innovations, V002T01A022, June 3–7, 2013
Paper No: GT2013-95180
DOI: https://doi.org/10.1115/GT2013-95180
View Paper titled, Suppression of Supersonic Jet Noise From Rectangular Nozzle by Microjet Injection: Influence of Main Jet Condition
Click here to open pdf in another window PDF for Suppression of Supersonic Jet Noise From Rectangular Nozzle by Microjet Injection: Influence of Main Jet Condition
Topics: Noise (Sound), Nozzles, Flow (Dynamics), Noise control, Pressure, Mach number, Reynolds-averaged Navier–Stokes equations, Schlieren methods, Shear (Mechanics), Shock (Mechanics)
Proceedings Papers

Enhancement of Impinging Atomization by Microjet Injection

Chihiro Inoue, Toshinori Watanabe, Takehiro Himeno, Seiji Uzawa
Proc. ASME. GT2013, Volume 1A: Combustion, Fuels and Emissions, V01AT04A046, June 3–7, 2013
Paper No: GT2013-94677
DOI: https://doi.org/10.1115/GT2013-94677
View Paper titled, Enhancement of Impinging Atomization by Microjet Injection
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Topics: Flow (Dynamics), Fuels, Gas turbines, Jets, Nozzles, Pressure, Reservoirs, Size measurement, Surface mount devices, Visualization
Proceedings Papers

Numerical Analysis of Flow in a Transonic Compressor With a Single Circumferential Casing Groove: Influence of Groove Location and Depth on Flow Instability

Yasunori Sakuma, Toshinori Watanabe, Takehiro Himeno, Dai Kato, Takeshi Murooka, Yukari Shuto
Proc. ASME. GT2013, Volume 6A: Turbomachinery, V06AT35A019, June 3–7, 2013
Paper No: GT2013-94988
DOI: https://doi.org/10.1115/GT2013-94988
View Paper titled, Numerical Analysis of Flow in a Transonic Compressor With a Single Circumferential Casing Groove: Influence of Groove Location and Depth on Flow Instability
Click here to open pdf in another window PDF for Numerical Analysis of Flow in a Transonic Compressor With a Single Circumferential Casing Groove: Influence of Groove Location and Depth on Flow Instability
Topics: Compressors, Flow (Dynamics), Flow instability, Numerical analysis, Blades, Leakage flows, Rotors, Stability, Stall inception, Chords (Trusses)
Journal Articles

Numerical Analysis of Flow in a Transonic Compressor With a Single Circumferential Casing Groove: Influence of Groove Location and Depth on Flow Instability

Yasunori Sakuma, Toshinori Watanabe, Takehiro Himeno, Dai Kato, Takeshi Murooka, Yukari Shuto
Journal: Journal of Turbomachinery
Article Type: Research-Article
J. Turbomach. March 2014, 136(3): 031017.
Paper No: TURBO-13-1132
DOI: https://doi.org/10.1115/1.4025575
Published Online: October 25, 2013
View Article titled, Numerical Analysis of Flow in a Transonic Compressor With a Single Circumferential Casing Groove: Influence of Groove Location and Depth on Flow Instability
Click here to open pdf in another window PDF for Numerical Analysis of Flow in a Transonic Compressor With a Single Circumferential Casing Groove: Influence of Groove Location and Depth on Flow Instability
Topics: Blades, Flow (Dynamics), Leakage flows, Rotors, NASA, Compressors, Numerical analysis, Vortices, Leakage, Stability