| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Outline of Final Research Achievements |
Magnetic fluids (MF) and magnetorheological fluids (MRF) are stable colloidal dispersion of small magnetic particles in a liquid carrier. When an external magnetic field is applied to an MF or MRF, some of the inner particles coagulate and form a clustering structure. In the present study,the following experiments were carried out: (1) Ultrasonic propagation velocity was measured and the change of ultrasonic propagation velocity was calculated. Based on the experiment results, the relation between the change of ultrasonic propagation velocity and magnetic field strength and frequency of AC magnetic field were discussed. (2) used Bingham plastic model was used to represent the dynamic behavior of MR fluid flow in a circular pipe under a magnetic field theoretically. The author carried out the flow experiment of MR fluid at a constant flow rate and compared
experimental results and analytical results quantitatively.
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