Ultrasonic propagation wave velocity in MR fluid at magnetic field sweep rates, 指導学生の受賞：Best Poster Award, Technical Program Committee of JAPMED’11
Winner: 金指 亮
GeorgiaのBatumiで開催されたThe Eleventh Japanese-Mediterranean Workshop on Applied Electromagnetic Engineering for Magnetic, Superconducting, Multifunctional and Nanomaterials (JAPMED'11)におけるポスター発表で，The Best Poster Awardが授与された。
Dynamic pressure change of a liquid sloshing in a rotating, laterally oscillating, cylindrical container
Tatsuo Sawada, Eisaku Yokose and Yusuke Saito
CD-Proceedings of 2018 Sustainable Industrial Processing Summit and Exhibition 4 101-108 Jun 2019 [Refereed]
We investigated characteristics of water sloshing in a rotating, laterally oscillating, cylindrical container both theoretically and experimentally. In our experiment, the time-dependent dynamic pressure of the water on the wall rather than the fr...
Application of knockdown pontoons of the emergency measures for volcanic hazards of Mount Fuji
Journal of Fujiology 15(2) 1-15 Jan 2019 [Refereed]
We investigate the stability and strength of a reinforced, rectangular-hull knockdown pontoon to determine the feasibility of the usage of knockdown pontoons for emergency procedures in case of Mt. Fuji volcanic hazards. The stability of the self-...
International Journal of Applied Electromagnetics and Mechanics 59(1) 341-347 Jan 2019 [Refereed]
This study reports magnetic fluid flow in a square duct under DC, AC, and DC+AC magnetic fields. We measured pressure drop with applying different magnetic fields. Under magnetic fields, flow resistance increased by forming a cluster so that press...
International Journal of Applied Electromagnetics and Mechanics 59(1) 335-340 Jan 2019 [Refereed]
This paper reports the experimental studies on a magneto-rheological (MR) fluid under AC magnetic fields. Magnetic clusters in the MR fluid are formed along the magnetic fields. The ultrasonic propagation velocity changes owing to the presence of ...
MATEC Web of Conferences 211 15003(6pp) Oct 2018 [Refereed]
We have investigated the free-surface fluctuations of liquid in a rotating, laterally oscillating, cylindrical vessel. We measured the time-dependent fluid-dynamic pressure instead of the free surface luctuations. From an FFT analysis of the dyna...
Tatsuo Sawada, Takashi Fukumoto, Ahmad Isnikurniawan and Muhammad Agung Bramanty
Journal of the Japan Society of Applied Electromagnetics and Mechanics 24(2) 86-91 Jun 2016 [Invited]
Magnetic and Magnetorheological (MR) fluids are formed by small magnetic particles suspended in a fluid such as water or oils. In the absence of an external magnetic field, these suspensions behave as a non-Newtonian fluid. When an external magnet...
Characteristics of Tuned Liquid Dampers using a Magnetic Fluid
Tatsuo Sawada and Ken-ichi Ohno
Journal of the Japanese Society for Experimental Mechanics 12(4) 284-287 Dec 2012 [Invited]
This is the review article for tuned liquid dampers using a magnetic fluid.
Investigation of cluster formation in magnetic fluids based on ultrasonic propagation properties
Tatsuo Sawada and Masaaki Motozawa
Journal of the Japan Society for Abrasive Technology 52(5) 250-253 May 2008 [Refereed][Invited]
Application of pendulum theory to a model of the overturning of a rectangular hull in a water tank
Yuji Doya and Tatsuo Sawada
The 11th International Workshop on Ship and Marine Hydrodynamics 24 Sep 2019 Hamburg University of Technology
This paper reports an experimental study of applying pendulum theory to determine whether a rectangular model of a hull would overturn. A pontoon used as a non-self-navigating work vessel was considered in this study. Its model begins to list when...
Ultrasonic propagation wave velocity in MR fluid at magnetic field sweep rates
Ryo Kanasashi, Yuya Tanaka, Tatsuo Sawada
The Eleventh Japanese-Mediterranean Workshop on Applied Electromagnetic Engineering for Magnetic, Superconducting, Multifunctional and Nanomaterials 18 Jul 2019 Batumi Shota Rustaveli State University
The ultrasonic wave propagation velocities of MR fluid under DC and AC magnetic fields were examined. Experiments were conducted to investigate the effect of magnetic field sweep rate on the cluster formation in MR fluid.
Self-dumping pontoons for emergency measures during large-scale natural disasters
Yuji Doya, Tatsuo Sawada
The General Meeting of Japan Society of Fujiology 6 Jul 2019 Japan Society of Fujiology
Ultrasonic propagation characteristics in MR fluid under magnetic fields
Yuya Tanaka, Ryo Kanasashi and Tatsuo Sawada
JSME Fluids Engineering Conference 2018 30 Nov 2018 JSME
MR fluid is one of the functional fluids affected by the magnetic. When a magnetic field is applied to MR fluid, MR fluid can change its property because of clustering structure. We measure the ultrasonic propagation property through MR fluid unde...
Influence of an applied magnetic field on resistance force of a magneto-rheological fluid in a pipe with a tapered pin
Kojiro Matsuzaka and Tatsuo Sawada
JSME Fluids Engineering Conference 2018 30 Nov 2018 JSME
We carry out theoretical and experimental study for the resistance force of MR fluid flow in a circular pipe. The purpose of this study is to calculate resistance of MR fluid based on the analysis and to compare the experimental results with the c...
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