書誌事項
- タイトル別名
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- Action of the Fluid in the Air-Micrometer : 1st Report, Characteristics of Small-Diameter Nozzle and Orifice No. 1, In the Case of Compressibility Being Ignored
- クウキ マイクロメータ ナイ ノ リュウタイ ノ サドウ 1 2
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抄録
Using 5 types of rounded nozzles, 24 types of cylindrical nozzles (l/d=0.799∼16.520, l : length, d : diameter) and 5 types of knife-edged orifices of 0.3mm to 1.2mm diameter, the discharge characteristics were investigated for Reynolds number from 550 to 10000, using distilled water and low-pressure air. The results are summarized : 1. Discharge coefficients, which were calculated the basis of experiments using distilled water and low-pressure air, fall on the same curves, if arranged by Reynolds number and l/d. 2. Discharge coefficients for each type of nozzle or orifice were collected and one experimental formula was worked out. 3. Downstream pressure of nozzle or orifice is reduced to a minimum at a position of about 1.2 times the pipe diameter and is recovered at about 5 times the pipe diameter. 4. Recovery rate of pressure is about 1.7m (m : area ratio) for rounded nozzle and 1.2m for others.
収録刊行物
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- 日本機械学會論文集
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日本機械学會論文集 26 (171), 1485-1492, 1960
一般社団法人 日本機械学会
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詳細情報 詳細情報について
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- CRID
- 1390282680132657792
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- NII論文ID
- 110002351288
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- NII書誌ID
- AN00187419
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- ISSN
- 21859485
- 00290270
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- NDL書誌ID
- 9150670
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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
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可