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- Shiibara Naoki
- National Defense Academy
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- Nakamura Hajime
- National Defense Academy
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- Yamada Shunsuke
- National Defense Academy
Bibliographic Information
- Other Title
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- C141 オリフィス板を設置した円管内の非定常熱伝達特性
Abstract
Heat transfer fluctuation between fluid and solid has a possibility to cause problems related to wall temperature fluctuation, such as high cycle thermal fatigue of materials. Also, the heat transfer enhancement due to flow turbulence has a similarity to the mass transfer enhancement, which leads to "flow accelerated corrosion (FAC)" at downstream of an orifice in pipe flows. In order to avoid and/or predict these phenomena, the quantitative information is necessary on the spatio-temporal fluctuation of the heat transfer. In this work, a technique using high-speed infrared thermography was applied to measure the spatio-temporal heat transfer to a turbulent water pipe flow having an orifice plate (bore ratio d/D=0.49). The spatio-temporal distribution of the heat transfer coefficient was evaluated from the temperature fluctuation on the heated thin-foil measured using high-speed infrared thermograph (〜800 Hz). As a result, it was demonstrated that the quantitative measurement was possible using this technique, not only for the time-averaged heat transfer, but also for the spatio-temporal fluctuation.
Journal
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- The Proceedings of the Thermal Engineering Conference
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The Proceedings of the Thermal Engineering Conference 2014 (0), _C141-1_-_C141-2_, 2014
The Japan Society of Mechanical Engineers
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Keywords
Details 詳細情報について
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- CRID
- 1390001205881040512
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- NII Article ID
- 110009938985
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- ISSN
- 2424290X
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed