書誌事項
- タイトル別名
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- Heat and Mass Transport Characteristics of Pulsating Flow in a Rectangular Duct
- 矩形管内脈動流の熱・物質輸送特性(第1報)脈動周波数が管内に設置された平板面の熱伝達に及ぼす影響
- クケイ カンナイ ミャクドウリュウ ノ ネツ ブッシツ ユソウ トクセイ ダイ 1ポウ ミャクドウ シュウハスウ ガ カンナイ ニ セッチサレタ ヘイバンメン ノ ネツ デンタツ ニ オヨボス エイキョウ
- 第1報 脈動周波数が管内に設置された平板面の熱伝達に及ぼす影響
- Part 1. Effect of Pulsating Frequency on Heat Transfer of a Flat Plate Installed in the Duct
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This study deals with flow behavior and associated heat transfer in pulsating duct flow. As well as mechanical engineers, researchers in bioengineering field also focus on heat and mass transport characteristics of pulsating flow from the viewpoint of life science. In spite of more than thirty-year history of pulsating flow and heat transfer studies, flow structure with periodical flow rate change and its effect on heat transfer are still at question. Researchers showed conflicting results. Some of them showed heat transfer enhancement due to flow pulsation, the others reported heat transfer prevention or no impact of flow pulsation on heat transfer. In order to make clear the complicated unsteady flow structure with periodical velocity fluctuation and its effect on heat transfer, it must be necessary to have macroscopic observation and image processing analysis of both the flow and temperature fields. The objective of this study, therefore, is to make clear the pulsating flow structure and heat transfer characteristics based on the visualizations of flow and temperature fields. Particle Image Velocimetry (PIV) and color schlieren visualization was applied to flow and temperature fields, respectively. Results showed that flow pulsation induced complicated spatial velocity distributions. Series vortices were formed in flow direction and they moved in span-wise direction from the sidewalls to the center of the duct. Such flow behavior caused locally high and low speed regions. From these results, it is concluded that heat transfer enhancement or prevention depends on increase or decrease of local flow rate induced by flow pulsation.
収録刊行物
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- 日本伝熱学会論文集
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日本伝熱学会論文集 15 (4), 211-221, 2007
社団法人 日本伝熱学会
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詳細情報 詳細情報について
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- CRID
- 1390282679392381568
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- NII論文ID
- 10019725157
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- NII書誌ID
- AA11358679
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- ISSN
- 18822592
- 09189963
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- NDL書誌ID
- 8963827
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可