2009 Fiscal Year Final Research Report
Analysis on Boundary Condition in High Knudsen Number Flow
| Project/Area Number |
20760111
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Fluid engineering
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| Research Institution | Nagoya University |
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Principal Investigator |
YAMAGUCHI Hiroki Nagoya University, 大学院・工学研究科, 講師 (50432240)
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| Project Period (FY) |
2008 – 2009
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| Keywords | 分子流体工学 / 高クヌッセン数流れ / 境界条件 |
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| Research Abstract |
The gas-surface interaction is important as the boundary condition of the high Knudsen number flows. The accommodation coefficient, which represents the gas-surface interaction as a parameter, was measured and analyzed. Energy accommoda-tion coefficient for platinum was obtained by measuring the heat flux from heated metal wire to gas under the medium vacuum condition using a simple experimental system. The tangential momentum accommodation coefficient for fused silica and platinum was de-duced from the mass flow rate measurement through a microtube. The characteristics of the accommodation coefficient were analyzed by the molecular dynamics method.
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