| Project/Area Number |
12650053
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Applied physics, general
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| Research Institution | Tottori University |
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Principal Investigator |
FUKUI Shigehisa Tottori University, Faculty of Engineering, Professor, 工学部, 教授 (40273883)
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| Co-Investigator(Kenkyū-buntansha) |
MATSUOKA Hiroshige Tottori University, Faculty of Engineering, Lecturer, 工学部, 講師 (10314569)
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| Project Period (FY) |
2000 – 2001
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| Project Status |
Completed (Fiscal Year 2001)
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| Budget Amount *help |
¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 2001: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 2000: ¥2,300,000 (Direct Cost: ¥2,300,000)
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| Keywords | Molecular Gas Dynamics / Boltzmann Equation / Direct Simulation Monte Carlo / Thermal Creep Flow / Microtribology / Molecular Gas-film Lubrication / Nanotechnology / Micro Mechanism / ボルソマン方程式 |
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| Research Abstract |
This research estimates the static and dynamic characteristics of the laser assisted micro levitation mechanism caused by thermal creep flow, which occurs only in regions where the Knudsen number defined as the ratio of the molecular mean free path and the characteristic length is not negligible, between two parallel plates with submicron spacings and temperature gradients. Influences of the accommodation coefficient of boundary surface and boundary configurations are rigorously obtained by the use of newly developed flow rate coefficients Qp and Qt. Static pressure distributions are compared with those by the direct simulation Monte Carlo (DSMC) technique and are found to agree well with each other. Dynamic pressures, which consist of stiffness and damping characteristics, are also analyzed by the linearization method of the MGL equation. The results of this research are helpful in designing the thermally induced micro levitation mechanism.
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