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Ken-ichi Funazaki
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Proceedings Papers

Experimental Investigation Into the Generation Mechanisms of Additional Loss due to Incoming Wakes in Low-Pressure Turbine Cascades

Hidekazu Kodama, Ken-ichi Funazaki
Proc. ASME. GT2024, Volume 12B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing, V12BT30A021, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-125061
https://doi.org/10.1115/GT2024-125061
View Paper titled, Experimental Investigation Into the Generation Mechanisms of Additional Loss due to Incoming Wakes in Low-Pressure Turbine Cascades
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Topics: Cascades (Fluid dynamics), Pressure, Turbines, Wakes
Journal Articles

Experimental Investigation of Additional Loss Associated With Incoming Wakes in Low-Pressure Turbine Cascades

Hidekazu Kodama, Ken-ichi Funazaki
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. May 2024, 146(5): 051013.
Paper No: TURBO-23-1274
https://doi.org/10.1115/1.4064318
Published Online: January 16, 2024
View Article titled, Experimental Investigation of Additional Loss Associated With Incoming Wakes in Low-Pressure Turbine Cascades
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Topics: Blades, Cascades (Fluid dynamics), Flow (Dynamics), Pressure, Reynolds number, Suction, Turbines, Wakes, Unsteady flow, Boundary layers
Proceedings Papers

Experimental Investigation of Additional Loss Associated With Incoming Wakes in Low-Pressure Turbine Cascades

Hidekazu Kodama, Ken-ichi Funazaki
Proc. ASME. GT2023, Volume 13B: Turbomachinery — Axial Flow Turbine Aerodynamics, V13BT30A016, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-102367
https://doi.org/10.1115/GT2023-102367
View Paper titled, Experimental Investigation of Additional Loss Associated With Incoming Wakes in Low-Pressure Turbine Cascades
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Topics: Cascades (Fluid dynamics), Pressure, Turbines, Wakes
Proceedings Papers

The Influences of Trailing Edge Base Pressure on the Profile Loss of Low-Pressure Turbine Blades

Hidekazu Kodama, Ken-Ichi Funazaki
Proc. ASME. GT2022, Volume 10B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing; Radial Turbomachinery Aerodynamics, V10BT30A009, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-80951
https://doi.org/10.1115/GT2022-80951
View Paper titled, The Influences of Trailing Edge Base Pressure on the Profile Loss of Low-Pressure Turbine Blades
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Topics: Pressure, Turbine blades, Turbines
Proceedings Papers

A Key Flow Parameter to the Profile Loss of Low-Pressure Turbine Blades

Hidekazu Kodama, Ken-ichi Funazaki
Proc. ASME. GT2021, Volume 2B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing, V02BT32A003, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-58887
https://doi.org/10.1115/GT2021-58887
View Paper titled, A Key Flow Parameter to the Profile Loss of Low-Pressure Turbine Blades
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Topics: Flow (Dynamics), Pressure, Turbine blades, Blades, Boundary layers, Form drag, Drag (Fluid dynamics), Design, Friction, Optimization
Proceedings Papers

Interpretation of Low-Pressure Turbine Profile Loss Generation Mechanisms From a Viewpoint of Blade Drag Forces

Hidekazu Kodama, Ken-ichi Funazaki
Proc. ASME. GT2020, Volume 2B: Turbomachinery, V02BT33A009, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14519
https://doi.org/10.1115/GT2020-14519
View Paper titled, Interpretation of Low-Pressure Turbine Profile Loss Generation Mechanisms From a Viewpoint of Blade Drag Forces
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Topics: Blades, Drag (Fluid dynamics), Pressure, Turbines, Form drag, Friction, Reynolds number, Boundary layers, Bubbles, Cascades (Fluid dynamics)
Proceedings Papers

A Method for Estimating Profile Loss of Low Pressure Turbine Blades From the Low Speed Cascade Test Data

Hidekazu Kodama, Ken-ichi Funazaki, Kodai Ito, Ryo Ikehata, Yamato Koda
Proc. ASME. GT2019, Volume 2B: Turbomachinery, V02BT40A005, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-90401
https://doi.org/10.1115/GT2019-90401
View Paper titled, A Method for Estimating Profile Loss of Low Pressure Turbine Blades From the Low Speed Cascade Test Data
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Topics: Cascades (Fluid dynamics), Pressure, Turbine blades, Flow (Dynamics), Blades, Reynolds-averaged Navier–Stokes equations, Simulation, Drag (Fluid dynamics), Reynolds number, Shear stress
Proceedings Papers

Parametric Studies on Aerodynamic Performance of Various Types of LP Turbine Airfoils for Aero-Engines Under the Influence Periodic Wakes and Freestream Turbulence

Ken-ichi Funazaki, Daichi Murakami, Yasuhiro Okamura
Proc. ASME. GT2019, Volume 2B: Turbomachinery, V02BT40A006, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-90408
https://doi.org/10.1115/GT2019-90408
View Paper titled, Parametric Studies on Aerodynamic Performance of Various Types of LP Turbine Airfoils for Aero-Engines Under the Influence Periodic Wakes and Freestream Turbulence
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Topics: Aircraft engines, Airfoils, Turbines, Turbulence, Wakes, Flow (Dynamics), Cascades (Fluid dynamics), Boundary layers, Pressure, Suction
Proceedings Papers

Studies on Cooling Performance of Round Cooling Holes With Various Configurations on a High-Pressure Turbine Vane

Ken-ichi Funazaki, Fumiya Kikuchi, Issei Tashiro, Takeomi Ideta, Yuhi Tanaka
Proc. ASME. GT2018, Volume 5C: Heat Transfer, V05CT19A009, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75439
https://doi.org/10.1115/GT2018-75439
View Paper titled, Studies on Cooling Performance of Round Cooling Holes With Various Configurations on a High-Pressure Turbine Vane
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Topics: Cooling, High pressure (Physics), Turbines, Algorithms, Computer simulation, Computer software, Flow (Dynamics), Gas turbines, Heat transfer, Optimization
Proceedings Papers

Detailed Studies on the Flow Field and Heat Transfer Characteristics Inside a Realistic Serpentine Cooling Channel With a S-Shaped Inlet

Ken-ichi Funazaki, Hikaru Odagiri, Takeshi Horiuchi, Masahide Kazari
Proc. ASME. GT2018, Volume 5B: Heat Transfer, V05BT13A010, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-76225
https://doi.org/10.1115/GT2018-76225
View Paper titled, Detailed Studies on the Flow Field and Heat Transfer Characteristics Inside a Realistic Serpentine Cooling Channel With a S-Shaped Inlet
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Topics: Cooling, Flow (Dynamics), Heat transfer, Turbine blades, Gas turbines, Flow visualization, Blades, Centrifugal force, Computer simulation, Disks
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
Proceedings Papers

Enhancement of Film Effectiveness of Cooling Holes With Fan-Shaped Exit Geometry by the Application of Double Flow-Control Devices: Optimization in Consideration of Device Offset

Ken-ichi Funazaki
Proc. ASME. GT2017, Volume 5C: Heat Transfer, V05CT19A031, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-65032
https://doi.org/10.1115/GT2017-65032
View Paper titled, Enhancement of Film Effectiveness of Cooling Holes With Fan-Shaped Exit Geometry by the Application of Double Flow-Control Devices: Optimization in Consideration of Device Offset
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Topics: Cooling, Flow control, Geometry, Optimization, Computational fluid dynamics, Manufacturing, Noise factors, Taguchi methods, Temperature
Journal Articles

Improvement of Turbine Vane Film Cooling Performance by Double Flow-Control Devices

Hirokazu Kawabata, Ken-ichi Funazaki, Yuya Suzuki, Hisato Tagawa, Yasuhiro Horiuchi
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. November 2016, 138(11): 111005.
Paper No: TURBO-16-1033
https://doi.org/10.1115/1.4033264
Published Online: May 17, 2016
View Article titled, Improvement of Turbine Vane Film Cooling Performance by Double Flow-Control Devices
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Topics: Cooling, Film cooling, Pressure, Suction, Turbines, Flow (Dynamics), Flow control
Proceedings Papers

Improvement of Turbine Vane Film Cooling Performance by Double Flow Control Devices

Hirokazu Kawabata, Ken-ichi Funazaki, Yuya Suzuki, Hisato Tagawa, Yasuhiro Horiuchi
Proc. ASME. GT2015, Volume 5B: Heat Transfer, V05BT12A052, June 15–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: GT2015-44026
https://doi.org/10.1115/GT2015-44026
View Paper titled, Improvement of Turbine Vane Film Cooling Performance by Double Flow Control Devices
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Topics: Film cooling, Flow control, Turbines, Cooling, Pressure, Reynolds-averaged Navier–Stokes equations, Simulation, Suction, Cascades (Fluid dynamics), Computational fluid dynamics
Proceedings Papers

Effect of Periodic Wake Passing on Film Effectiveness of Inclined Discrete Cooling Holes Around the Leading Edge of a Blunt Body

Ken-ichi Funazaki, Eitaro Koyabu, Shigemichi Yamawaki
Proc. ASME. GT1996, Volume 4: Heat Transfer; Electric Power; Industrial and Cogeneration, V004T09A021, June 10–13, 1996
Publisher: American Society of Mechanical Engineers
Paper No: 96-GT-207
https://doi.org/10.1115/96-GT-207
View Paper titled, Effect of Periodic Wake Passing on Film Effectiveness of Inclined Discrete Cooling Holes Around the Leading Edge of a Blunt Body
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Topics: Cooling, Wakes, Turbulence, Thermocouples, Turbine blades, Density, Flow (Dynamics), Generators, Liquid crystals, Temperature
Proceedings Papers

Experimental Studies on Unsteady Aerodynamic Loss of a High-Pressure Turbine Cascade

Ken-ichi Funazaki, Yoshinori Sasaki, Tadashi Tanuma
Proc. ASME. GT1997, Volume 1: Aircraft Engine; Marine; Turbomachinery; Microturbines and Small Turbomachinery, V001T03A010, June 2–5, 1997
Publisher: American Society of Mechanical Engineers
Paper No: 97-GT-052
https://doi.org/10.1115/97-GT-052
View Paper titled, Experimental Studies on Unsteady Aerodynamic Loss of a High-Pressure Turbine Cascade
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Topics: Cascades (Fluid dynamics), High pressure (Physics), Turbines, Wakes, Rotors, Flow (Dynamics), Turbomachinery, Blades, Generators, Physics
Proceedings Papers

Studies on Wake-Disturbed Boundary Layers Under the Influences of Favorable Pressure Gradient and Free-Stream Turbulence: Part I — Experimetal Setup and Discussions on Transition Model

Ken-ichi Funazaki, Takashi Kitazawa, Kazuyuki Koizumi, Tadashi Tanuma
Proc. ASME. GT1997, Volume 1: Aircraft Engine; Marine; Turbomachinery; Microturbines and Small Turbomachinery, V001T03A077, June 2–5, 1997
Publisher: American Society of Mechanical Engineers
Paper No: 97-GT-451
https://doi.org/10.1115/97-GT-451
View Paper titled, Studies on Wake-Disturbed Boundary Layers Under the Influences of Favorable Pressure Gradient and Free-Stream Turbulence: Part I — Experimetal Setup and Discussions on Transition Model
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Topics: Boundary layers, Pressure gradient, Turbulence, Wakes, Flat plates, Generators, Heat transfer, Probes, Stainless steel, Wheels
Proceedings Papers

Studies on Wake-Disturbed Boundary Layers Under the Influences of Favorable Pressure Gradient and Free-Stream Turbulence: Part II — Effect of Free-Stream Turbulence

Ken-ichi Funazaki, Takashi Kitazawa, Kazuyuki Koizumi, Tadashi Tanuma
Proc. ASME. GT1997, Volume 1: Aircraft Engine; Marine; Turbomachinery; Microturbines and Small Turbomachinery, V001T03A078, June 2–5, 1997
Publisher: American Society of Mechanical Engineers
Paper No: 97-GT-452
https://doi.org/10.1115/97-GT-452
View Paper titled, Studies on Wake-Disturbed Boundary Layers Under the Influences of Favorable Pressure Gradient and Free-Stream Turbulence: Part II — Effect of Free-Stream Turbulence
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Topics: Boundary layers, Pressure gradient, Turbulence, Wakes, Heat transfer, Probes, Shapes, Wire
Proceedings Papers

Effects of Periodic Wake Passing Upon Flat-Plate Boundary Layers Experiencing Favorable and Adverse Pressure Gradient

Ken-ichi Funazaki, Eitaro Koyabu
Proc. ASME. GT1998, Volume 1: Turbomachinery, V001T01A034, June 2–5, 1998
Publisher: American Society of Mechanical Engineers
Paper No: 98-GT-114
https://doi.org/10.1115/98-GT-114
View Paper titled, Effects of Periodic Wake Passing Upon Flat-Plate Boundary Layers Experiencing Favorable and Adverse Pressure Gradient
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Topics: Boundary layers, Flat plates, Pressure gradient, Wakes, Flow (Dynamics), Wire
Proceedings Papers

Surface Heat Transfer Measurements of a Scaled Rib-Roughened Serpentine Cooling Passage by Use of a Transient Liquid Crystal Technique

Ken-ichi Funazaki, Kouhei Ishizawa, Shigemichi Yamawaki
Proc. ASME. GT1998, Volume 4: Heat Transfer; Electric Power; Industrial and Cogeneration, V004T09A086, June 2–5, 1998
Publisher: American Society of Mechanical Engineers
Paper No: 98-GT-515
https://doi.org/10.1115/98-GT-515
View Paper titled, Surface Heat Transfer Measurements of a Scaled Rib-Roughened Serpentine Cooling Passage by Use of a Transient Liquid Crystal Technique
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Topics: Cooling, Heat transfer, Liquid crystals, Transients (Dynamics), Ducts, Temperature, Absorption, Flow (Dynamics), Flow visualization, Heat