2012 Fiscal Year Final Research Report
Development of large-size high-speed phase shifting interferometer to observe sound and to measure turbulent thermal boundary layer
| Project/Area Number |
23656142
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Thermal engineering
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| Research Institution | Tohoku University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
KOMIYA Atsuki 東北大学, 流体科学研究所, 准教授 (60371142)
MORIYA Shuichi 東北大学, 流体科学研究所, 技術専門職員 (30400419)
OKAJIMA Junnosuke 東北大学, 流体科学研究所, 助教 (70610161)
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| Project Period (FY) |
2011 – 2012
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| Keywords | 対流熱伝達 / 境界層 / 干渉計 / 乱流遷移 |
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| Research Abstract |
In order to achieve highly sensitive and high-speed measurement, a novel interferometry system was developed. A novel phase-shifting Koester prism was developed to acquire the phase shifted data with high sampling rate. In order to build the interferometer in the wind tunnel, the large-size quasi common path interferometer was developed with the concave mirror and three dimensional quasi common path. Next, the forced convection field around heated cylinder was observed and the turbulent transition of the boundary layer was estimated by using the tripping wire. Finally, the developing of the thermal boundary layer on the flat plate was measured quantitatively. Furthermore, the velocity distribution in the boundary layer was estimated.
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