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Members Assoc.Prof.Y.Murai
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Research Project


A.

Frictional Drag Reduction

Reynolds Stress Reduction by Deformed Bubbles(JSPS, 2005-2007)
Microbubble Drag Reduction in a Channel(NMRI, ONR 2003-2005)
Airfilm Drag Reduction in a Channel(NMRI, 2003-2005)
Bubble-vortex Interaction in a Taylor-Couette Flow(JSPS, 2005-2007)
Water Electrolysis-based Drag Reduction(JSPS, 2005-2007)
Power-Saved Bubble Generation for Ships by Hydrofoil(NEDO, 2008-2012)
Complex Viscosity of Microbubble Mixture (JSPS, 2009-2012)
Smert Control of Two-Phase Flow for Drag Reduction (JSPS, 2012-2016)
Mechanism Study on Microbubble Drag Reduction (MOD, 2016-2018)


Boundary Layers with Bubbles Measured Beneach a 120m-Ship


Negative turbulent shear stress component around single bubble

B.

Advanced Optical Measurement for Aerodynamics
Multi-scaled PIV for Dispersed Multiphase Flow (JSPS, 2003-2005)
Three-dimensional PTV and Tomography for Two-phase Flow (JNC, 2003-2005)
CFD-based Post-processing Scheme for PIV and PTV(JSPS, 2003-2005)
Inversed Analysis of PIV(JSPS, 2003-2005)
Development of Telescopic PIV(TEPCO, 2005-2006)

Flowmetering and Control of Natural Gas Pipeline(TG, 2008-2012)
PIV for Spatio-temporal Airflow Structure(JSPS, 2007-2009)
Flying Bird Detection System (NEC, 2011-2013)
Windfarm Bird Strike Prevention System (MRI, 2013-2016)
PIV-based Pressuremetry for Wind Turbines(JSPS, 2015-2016)


Wind Tunnel Laboratory of LFC and Tree Collapsed by Typhoon


Color Tomographic Recursive Voxel PIV Applied for Downburst

C.

Applied Ultrasound for Flow Monitoring
Multiphase Flowmetering Method using Ultrasound (NEDO, 2005-2008)
Multiple UVP Measurement of Vortex Ring (U-Warwick, 2003-2005)
Interface-detection Methodology for Airfilm Turbulent Flow
Secondary Flow Measurement in Curved Pipe Flow
Spinning Rheometry for Visco-elastic fluid (ETH, 2007-2009)
Complex Viscosity of Microbubble Mixture (JSPS, 2009-2011)
Aeration Convection in Stratified Lake (MRI, 2010-2013)
Non-Newtonian Multiphase Fluid Dynamics(JSPS, 2014-2016)



Gas-Liquid Two-Phase Flow Analyzer by UVP


Ultrasonic Spinning Rheometry for Food and Various Fluids

D.

Development of New Fluid Machinaries
Miniturized Trochoid Gear Pump (JAXA, 2000-2009)
Wind Power Acquisition by Savonius Windmill (PROD, 1999-2005)
Telescopic PIV System for Large Natural Phenomena (TEPCO, 2004-2008)
Ultrasound Multiphase Flowmeter(NEDO, 2005-2008)
Savonius-Darrius Hybrid Wind Turbine (HT, 2009-2010)
Landmark Design of Future Wind Turbine (JSPS, 2011-2013)

Vertical Axis Wind Turbines in Strong Turbulence (JPS, 2015-2016)


Micro Trochoid Gear for Peristaltic Pumping on Rotating Frame

Hydrofoil for High Power Efficiency Generation of Bubble Layer

Torque Generation by Micro Savonius Turbine Measured by PIV


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(c) 2003 Laboratory of Flow Control, Division of Energy and Environment, Hokkaido University
Kita-13, Nishi-8, Kita-ku, Sapporo
Tel : 011-706-6372 (Y.Murai)
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