1990 Fiscal Year Final Research Report Summary
Gas-Liquid Two-phase Flow of Magnetic Fluid in a Strong Magnetic Field
| Project/Area Number |
01460109
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| Research Category |
Grant-in-Aid for General Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Fluid engineering
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| Research Institution | Tohoku University |
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Principal Investigator |
KAMIYAMA Shinichi Tohoku Univ. Inst. Fluid Sci., Professor, 流体科学研究所, 教授 (80006171)
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| Co-Investigator(Kenkyū-buntansha) |
YAMASAKI Takasuke Kochi Univ. Faculty of Agriculture, Professor, 農学部, 教授 (00036724)
OYAMA Tadamasa Tohoku Univ. Inst. Fluid Sci., Assistant, 流体科学研究所, 助手 (80006189)
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| Project Period (FY) |
1989 – 1990
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| Keywords | Magnetic Fluid / Two-phase Flow / Energy Conversion / Magnetic Field / Boiling / Pressure Rise |
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| Research Abstract |
Theoretical and experimental studies on boiling two-phase flow of hexane based magnetic fluid with 50% mass concentration of manganese-zink ferrite particles are conducted in connection with the development of new energy conversion system utilizing the magnetic fluid.
The theoretical analysis of two-phase flow characteristics of magnetic fluid in a vertical pipe in a nonniform magnetic field is developed by using one-dimensional separated flow model and two-dimensional nonequilibrium dilute two-fluid model. It is clarified that the reasonable pressure increase is obtained to produce a fluid flow in a pipe by the application of nonuniform magnetic field.
The experimental studies are conducted to examine the results of the theoretical analysis. At first, hexane (boiling point(] SY.apprxeq.[)70<@D10@>D1C was selected as a carrier liquid. Then the effect of magnetic field on the pressure and temperature distributions of the boiling two-phase flow of the magnetic fluid is clarified.
The small test rig is constructed to demonstrate the new energy conversion system utilizing the boiling two-phase flow of magnetic fluid.
The experimental results of pressure rise are compared with the theoretical prediction and the reasonable agreement between them is obtained.
As a basic study related to the two-phase flow of magnetic fluid, theoretical and experimental studies on sound wave propagation in gas-liqued two-phase magnetic fluid in a magnetic field is also carried out.
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