2014 Fiscal Year Final Research Report
Study of unsteady thermal and flow fields by using simultaneous temperature and velocity measurements system
| Project/Area Number |
25871222
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Fluid engineering
Thermal engineering
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| Research Institution | 防衛大学校(総合教育学群、人文社会科学群、応用科学群、電気情報学群及びシステム工学群) |
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Principal Investigator |
YAMADA Shunsuke 防衛大学校(総合教育学群、人文社会科学群、応用科学群、電気情報学群及びシステム工, システム工学群, 講師 (90516220)
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| Project Period (FY) |
2013-04-01 – 2015-03-31
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| Keywords | はく離再付着流れ / 強制対流熱伝達 / ステレオPIV / 高速赤外線カメラ / 同時計測 |
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| Outline of Final Research Achievements |
In order to clarify the heat transfer mechanism of the unsteady thermal and flow phenomenon appeared in a forced convection heat transfer, the aim of the present study is simultaneously to measure the velocity and thermal fields in the high-spatial resolution over a backward facing step flow. The temporal and spatial fluctuations of the heat transfer coefficient were restored from the temperature measurement using a high-speed infrared thermograph. Also, the spatial distribution of three components of the velocity in this region was measured. These simultaneous measurements revealed that the local enhancement of the heat transfer on the heating foil corresponds to the increase in the streamwise and downward flow in the near-wall region. There were the spanwise phase delay between the spanwise velocity and the heat transfer coefficient fluctuations. The periodic structure of the flow and thermal fluctuations in the near-wall region was experimentally confirmed.
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| Free Research Field |
熱流体計測
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