| Project/Area Number |
23760162
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Fluid engineering
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| Research Institution | Tokyo University of Science |
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Principal Investigator |
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| Project Period (FY) |
2011 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2012: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2011: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | 磁気機能性ナノ流体 / 磁性流体 / 強制対流熱伝達 / 伝熱促進 / UVP / 流体工学 / ＵＶＰ / 流動抵抗 |
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| Research Abstract |
Relationship between heat transfer and fluid flow of a magnetic fluid under magnetic field was investigated experimentally. Experiments were performed in both laminar flow and turbulent flow. Uniform or non-uniform magnetic field were applied to magnetic fluid flow with changing magnetic field intensity, magnetic field direction and so on. Moreover, in order to better understand heat transfer phenomena of this research, the velocity distribution of the magnetic fluid flow was measured by the Ultrasonic Velocity Profile (UVP) method. The results show that in the case of laminar flow, heat transfer was locally enhanced by applying magnetic field in the region where the magnetic field exists. This enhancement of heat transfer under the uniform magnetic field is larger than that under the non-uniform magnetic field. According to the results of the velocity distribution measurements, it seems that these heat transfer enhancements were caused by different mechanism between applying uniform magnetic field and applying non-uniform magnetic field. In addition, since flow resistance increases by applying magnetic field, the relationship between heat transfer enhancement and increment of flow resistance was evaluated.
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