1989 Fiscal Year Final Research Report Summary
Measurement of Magnetic Fluid Flows in a Traveling Magnetic Field with Laser Optical Fiber
| Project/Area Number |
62550124
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
Fluid engineering
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
YAMANE Ryuichro Tokyo Institute of Technology, Engineering, Professor, 工学部, 教授 (50016424)
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| Co-Investigator(Kenkyū-buntansha) |
OSHIMA Shuzo Tokyo Institute of Technology, Engineering, Research Associate, 工学部, 助手 (20143670)
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| Project Period (FY) |
1987 – 1989
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| Keywords | Fluid Mechanics / Magnetic Fluid / Laser velocimeter / Optical Fiber / Traveling Magnetic Field / Laser Diode Source |
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| Research Abstract |
On the flow of magnetic fluid in a traveling magnetic field, the following new results were obtained: It was very difficult to measure the inner velocity distribution of magnetic fluid flows with a normal typed laser-doppler velocimeter, because magnetic fluid is so black and opaque liquid that scattered light can hardly pass through it. However, directed strong light of proper wavelength can pass through it in only a short distance. So we developed the new method to measure the local velocity of magnetic fluid flow, using a AlGaAs laser diode optical source. The wavelength of laser light was about 800nm. In this method, the local velocity of magnetic was obtained by measuring the time taken for a tracer particle to pass between two sets of fibers. After this method was adjusted with the rotational flow in a rotational flow in a rotating channel, it was applied to the flow of a magnetic fluid in a circular channel excited by a traveling magnetic field made by a stator of a single-sided linear induction motor. From the measurements, the induced velocity was found to be proportional to the frequency and the strength of the applied current to the inductor. It was important to choose the size of tracer particles, the wavelength of the light source and the sensitive optical detector for the better results.
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Research Products
(23 results)
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[Publications] Okubo, M., Ozaki, H., Ishibashi, Y., Oshima, S and Yamane, R.: "Measurement of Magnetic Fluid Flows Using Laser Optical Fibers" Journal of the Japan Society of Powder and Powder Metallurgy, Vol.36 (1989), p.770-773.
Description
「研究成果報告書概要(欧文)」より
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[Publications] Ozaki, H., Okubo, M., Ishibashi, Y., Oshima, S and Yamane, R.: "Measurement of Magnetic Fluid Flows Using Laser Optical Fibers" Preprint of the Japan Society of the Magnetic Fluid Research, (1988), p.28-30.
Description
「研究成果報告書概要(欧文)」より
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[Publications] Katumura, Y., Okubo, M., Ishibashi, Y., Oshima, S and Yamane, R.: "Open Channel Flows of Magnetic Fluid in a Traveling Magnetic Field" Preprint of the Japan Society of the Magnetic Fluid Research, (1989), p.35-40.
Description
「研究成果報告書概要(欧文)」より
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[Publications] Okubo, M., Ozaki, H., Ishibashi, Y., Oshima, S and Yamane, R.: "Magnetic Fluid Flows in a Traveling Magnetic Field (Analysis on Flow in Channel)" JSME International Journal (Series II), Vol.32, (1989), p.39-46.
Description
「研究成果報告書概要(欧文)」より
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