書誌事項
- タイトル別名
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- ON THE CHARACTERISTICS OF AN OPEN CHANNEL FLOW THROUGH PASSAGE OF CROSS-SECTIONAL VARIATION (2)-Experimental Investigation of an Open Channel Flow through Passage of an Sudden Expansion or Contraction-
- カイスイロ ダンメン ヘンカブ ニ オケル ナガレ ノ スイリ トクセイ ニ
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This paper deals with the characteristics of an open channel flow around a suddenwidth-expansion or -contraction. The velocity measurements are carried out with a hot-film flowmeter and a propeller flowmeter. Three dimensional distributions of mean andturbulent velocity, the energy and the momentum coefficients, the Reynolds stress areobtained experimentally. Some interesting results about the bed-variation around a suddenwidth-expansion or -contraction are obtained experimentally.Main results obtained through experimental investigations are as follows; 1) The char-acteristics of mean velocity distribution depend on the expansion or contraction ratioand the kind of flow transition, that is, sub-critical or supercritical transitions. 2) Theenergy and the momentum coefficient of flow in transition have values more than unity.3) The existence of spiral motion is found in the flow through the section of suddencontraction. 4) The energy spectrum of turbulence show the existence of the inertial sub-range which is descriced by the power low of -5/3.
収録刊行物
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- 京都大学防災研究所年報. B
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京都大学防災研究所年報. B 20 (B-2), 309-329, 1977-04-01
京都大学防災研究所
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詳細情報 詳細情報について
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- CRID
- 1050282677039030912
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- NII論文ID
- 120001098104
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- NII書誌ID
- AN00027784
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- ISSN
- 0386412X
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- HANDLE
- 2433/70155
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- NDL書誌ID
- 1911999
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- 本文言語コード
- ja
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- 資料種別
- departmental bulletin paper
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- データソース種別
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- IRDB
- NDL
- CiNii Articles