Investigation of the mechanism of nano-scale gas lubrication via molecular gas dynamics approach
| Project/Area Number |
20560146
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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 |
Fluid engineering
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| Research Institution | Tohoku University |
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Principal Investigator |
YONEMURA Shigeru Tohoku University, 流体科学研究所, 准教授 (00282004)
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| Co-Investigator(Kenkyū-buntansha) |
TOKUMASU Takashi 東北大学, 流体科学研究所, 准教授 (10312662)
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2010: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2009: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2008: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | トライボロジー / 気体潤滑 / 分子気体力学 / DSMC法 / 流体工学 |
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| Research Abstract |
In this research, we paid attention to the low friction which appeared when the sliding speed of diamond coating on a rotating metal disk was increased to 2-3 m/s. We solved the lubrication mechanism of this low friction by way of numerical simulation and showed that the diamond coating was floated by high pressure induced by micro/nano-scale gas flow between the diamond coating with micro/nano-scale surface structure and the counter metal surface. We also showed that this was a new phenomenon peculiar to micro/nano-scale gas flow.
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Report
(4 results)
Research Products
(56 results)
