Freezing Characteristics in a Horizontal Rectangular Duct with the Separated Region
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- YAMADA Masahiko
- Div. of Mech. Sci.,Graduate School of Engineering, Hokkaido Univ.
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- FUKUSAKO Shoichiro
- Div. of Mech. Sci.,Graduate School of Engineering, Hokkaido Univ.
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- OH Cheol
- Div. of Mech. Sci.,Graduate School of Engineering, Hokkaido Univ.
Bibliographic Information
- Other Title
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- 剥離領域を有する矩形流路内の凍結挙動
- ハクリ リョウイキ オ ユウスル クケイ リュウロ ナイ ノ トウケツ キョドウ
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Abstract
In this paper the effects of flow separation both on the freezing heat transfer characteristics and on the pressure drop of a duct flow have been investigated. Under some condition of temperature and flow separation an ice-water interface in the presence of a turbulence has been observed to be complexed. The degree of flow separation was varied by employing the orifices of various heights at the inlet of the duct. In this study, the range of Reynolds number ReH coveredfrom 2.61×103 to 1.36×l04 and cooling temperature ratios to the water temperature from 2.0 to 30.0. Velocity profile and turbulence intensity distribution in the flow passage were measured using a Laser Doppler Velocimeter. The measurement results showed that the first and the second space of ice layer were strongly related to the flow separation by an orifice and that the stepped ice pattern after 2nd spacing ice-bands was very similar to the patterns which was observed in the case of pie flow.
Journal
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- Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers
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Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers 15 (3), 285-296, 1998
Japan Society of Refrigerating and Air Conditioning Engineers
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Details 詳細情報について
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- CRID
- 1390001204665174144
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- NII Article ID
- 130004565832
- 10002714703
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- NII Book ID
- AA11125910
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- ISSN
- 2185789X
- 13444905
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- NDL BIB ID
- 4844584
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- CiNii Articles
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- Abstract License Flag
- Disallowed