Segawa Takehiko

Degree

Academic Background

Work Experience

Specializations

Fluid Engineering, Aerodynamics, Plasma Science, Fluid Machinery, High Voltage Technology, Laser Measurement

Research Topics

Flow control technology for reducing air drag in mobility, Performance improvements of plasma actuators, Deicing technology using plasma

Keywords in Research

Flow Control Device, Plasma Actuator, Dielectric Barrier Discharge, Aerodynamic Technology, Flow Separation Control, Turbulence Control, Drag Reduction, Mobility, Automotive Engineering, Turbomachinery, Deicing, Zero Emissions, Carbon Neutral, Renewable Energy

Affiliation

The Japan Society of Mechanical Engineers, The Japan Society of Fluid Mechanics, Society of Automotive Engineers of Japan, Inc., American Institute of Aeronautics and Astronautics

Scientific Papers

Title / Publisher		Publish Date
Thermal turbulence in mercury Physical Review Letters, 76, 9, 1465-1468		1996-02
High-Reynolds-number thermal turbulence in mercury Physical Review E, 56, 2, R1302-R1305		1997-08
Matched boundary layers in turbulent Rayleigh-Benard convection of mercury Physical Review E, 57, 1, 557-560		1998-01
Evidence against 'ultrahard' thermal turbulence at very high Rayleigh numbers Nature, 398, 6725, 307-310		1999-03
Active control of streak structures in wall turbulence using an actuator array producing inclined wavy disturbances Journal of Turbulence, 3, N15		2002-03
Experimental study on drag-reducing channel flow with surfactant additives - spatial structure of turbulence investigated by PIV system International Journal of Heat and Fluid Flow, 23, 5, 700-709		2002-10
Sensors and Actuators for Smart Control of Separation Theoretical and Applied Mechanics Japan, 52, 117-125		2004-07
Reynolds-number dependence of turbulence structures in a drag-reducing surfactant solution channel flow investigated by particle image velocimetry Physics of Fluids, 17, 7, 13		2005-07
Wave-turbulence interaction of a low-speed plane liquid wall-jet investigated by particle image velocimetry Physics of Fluids, 17, 082101		2005-07
Simultaneous measurement of turbulent velocity field and surface wave amplitude in the initial stage of an open-channel flow by PIV Experiments in Fluids, 39, 6, 945-953		2005-12
Simultaneous measurements of velocity fields in thermal turbulence by USV and PIV Flow Measurement and Instrumentation, 17, 2, 107-112		2006-04
Turbulent drag reduction by means of alternating suction and blowing jets Fluid Dynamics Research, 39, 7, 552-568		2007-07
Coaxial annular jet produced by DBD Plasma Actuator Nagare, 27, 1, 65-72		2008-02
An analytical model of electric field by plasma actuator Theoretical and Applied Mechanics Japan, 56, 401-409		2008-07
Jet flow induced by a surface plasma actuator Proceedings of the Institution of Mechanical Engineers, Part I, Journal of Systems and Control Engineering, 222, 5, 347-356		2008-08
Generation of functional jet using DBD plasma actuator with facing linear electrodes Theoretical and Applied Mechanics Japan, 57, 289-296		2009-02
Study　of　a　Circular　Cylinder　Flow　Using　Plasma　Actuators（1st　Report, Temporal-Average　Characteristic　in　Wake） Transactions of the Japan Society of Mechanical Engineers. B, 76, 772, 2011-2017		2010-12
Active control of separation flow around airfoil using DBD plasma actuator Theoretical and Applied Mechanics Japan, 59, 265-273		2011-02
Control of the Jet Induced by the Plasma Actuators (Effect of the Applied Voltage Characteristics on the Jet Direction） Transactions of the Japan Society of Mechanical Engineers. B, 77, 775, 672-679		2011-03
Active Separation Control over a NACA0024 by DBD Plasma Actuator and FBG Sensor Journal of Fluid Science and Technology, 7, 1, 39-52		2012-02
Study of a Circular Cylinder Flow Using Plasma Actuators (2nd Report: Flow Visualization of Wake Structure) Transactions of the Japan Society of Mechanical Engineers. B, 78, 788, 734-744		2012-04
Mitigation of flow separation using DBD plasma actuators on airfoils: A tool for more efficient wind turbine operation Renewable Energy, 42, 105-110		2012-06
Effects of input voltage on flow separation control for low-pressure turbine at low Reynolds number by plasma actuators International Journal of Rotating Machinery, 2012, 902548		2012-07
Periodic Flow Separation Control around Windmill Blade by Plasma Actuator and FBG Sensor Theoretical and Applied Mechanics Japan, 61, 105-112		2013-01
Flow Control on a NACA 4418 Using Dielectric-Barrier-Discharge Vortex Generators AIAA Journal, 51, 2, 452-464		2013-02
Study on Air Cooling Technology of Rotor Shaft for Anode Gas Recycle Blowers in SOFC Turbomachinery, 41, 8, 502-510		2013-08
Experimental Study on Characteristics of Backward Jet Induced by Plasma Actuator TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B, 79, 807, 2375-2383		2013-11
Flow Characteristics Induced by Winglet-Type Plasma Actuators Journal of Fluid Science and Technology, 8, 3, 396-406		2013-12
Gurney flap effect using jet induced by plasma actuator Transactions of the JSME (in Japanese), 81, 826, 15-00076		2015-06
Active Control of Tip Clearance Flow of an Annular Turbine Rotor by Ring-type Plasma Actuators Journal of the Gas Turbine Society of Japan, 44, 3, 174-181		2016-05
Experimental investigations of induced flow by DBD plasma actuators with fine structure electrodes Transactions of the JSME (in Japanese), 82, 838, 16-00068		2016-06
Experiments and Consumed Power Measurements for Active Control of Tip Clearance Flow of a Turbine Rotor Using Ring-type Plasma Actuators Journal of the Gas Turbine Society of Japan, 44, 5, 408-414		2016-09
Feedback Control of Flow Separation Using Plasma Actuator and FBG Sensor International Journal of Aerospace Engineering, 2016, 8648919		2016-12
Effect of Long-Lived Species Generated by Non-Thermal Plasmas on the Auto-Ignition Delay of Liquid Hydrocarbon Fuel-Air Pre-Mixtures Combustion Science and Technology, 180, 9, 1624-1638		2017-05
Experimental study on laboratory scale Totalized Hydrogen Energy Utilization System using wind power data International Journal of Hydrogen Energy, 42, 19, 13827-13838		2017-05
Effects of Tip Edge Shapes on Turbine Tip Clearance Flow Control Using Ring-type Plasma Actuators Journal of the Gas Turbine Society of Japan, 45, 3, 163-169		2017-05
Effects of mainstream velocity and setting position on flow separation control of a curved wall using plasma actuators Journal of Fluid Science and Technology, 14, 2, JFST0007		2019-07
Effects of jet induced by string-type plasma actuator on flow around three-dimensional bluff body and drag force Energies, 13, 4, 872		2020-02
Effects of Input Voltage and Freestream Velocity on Active Flow Control of Passage Vortex in a Linear Turbine Cascade Using Dielectric Barrier Discharge Plasma Actuator Energies, 13, 3, 764		2020-02
Mechanism of Thrust–Power Ratio Improvement Using Plasma Actuator with Discretized Encapsulated Electrodes Actuators, 11, 10, 296		2022-10
Vortex structure for reducing tip leakage flow of linear turbine cascade using dielectric barrier discharge plasma actuator Aerospace Science and Technology, 136, 108215		2023-05
Active Flow Control for Passage Vortex Reduction in a Linear Turbine Cascade with Various Tip Clearance Sizes Using a Dielectric Barrier Discharge Plasma Actuator Aerospace, 10, 7, 641		2023-07
Effect of opposite phase AC voltage application using dual power supplies on thrust and induced flow of plasma actuator Japanese Journal of Applied Physics, 62, 11, 116002		2023-11
Effect of Plasma Actuator Layout on the Passage Vortex Reduction in a Linear Turbine Cascade for a Wide Range of Reynolds Numbers Actuators, 12, 12, 467		2023-12
Method to avoid crosstalk for induced flow acceleration in multi-stage dielectric barrier discharge plasma actuators Applied Physics Letters, 126, 1, 014102		2025-01
Driving efficiency improvement of plasma actuator by adjusting applied voltage waveform using a variable reactor Journal of Fluid Science and Technology, 20, 1, JFST0010		2025-06
Active control of flows around a bluff body with yaw angle by inducing longitudinal vortices using plasma actuators Transactions of the JSME (in Japanese), 91, 950, 25-00013		2025-10
Hybrid plasma actuators for reducing passage vortex and tip leakage vortex in a linear turbine blade cascade at various Reynolds numbers Aerospace Science and Technology, 168, A, 110794		2026-01

Lecture Presentations