油のキャビテーション初生の観察

• 鷲尾 誠一

• 高橋 智

• 宇田 康弘

• 砂原 匠

書誌事項

タイトル別名

• Observation of Cavitation Inception in Hydraulic Oil Flow.
• アブラ ノ キャビテーション ショセイ ノ カンサツ

抄録

It has been known that the traditional "nucleus" theory for cavitation is incompatible with some physically and experimentally recognized facts. In order to re-examine the issue cavitation in a hydraulic oil flow through a long two-dimensional acrylic constriction has been observed by strobos-copic photography with a microscope, laser beam transmission and pressure and noise measurements. A revelation was that at the very incipient stage of cavitation, a microscopic cavity suddenly emerges and attaches on the inlet edge. Luminescence was also observed in the cavitation together with electrostatic charge. All the findings, which cannot be consistently explained by the nucleus theory, lead to the following speculation ; at the separation point a tensile force rips off a liquid particle from the wall, leaving behind a tiny vacuum vecancy, which forms the incipient cavity on the edge. This rip off action also results in electrostatic charges, which cause light emission when discharged in the vacuum.

収録刊行物

• 日本機械学会論文集Ｂ編

  日本機械学会論文集Ｂ編 65 (633), 1643-1651, 1999

  一般社団法人 日本機械学会

キーワード

• Gas Diffusion

詳細情報

• CRID: 1390001206184925696
• NII論文ID: 130004223542
• NII論文ID: 110002395404
• NII書誌ID: AN00187441
• DOI: 10.1299/kikaib.65.1643
• ISSN: 18848346
• ISSN: 03875016
• NDL書誌ID: 4742256
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4742256
• Web Site: http://www.jstage.jst.go.jp/article/kikaib1979/65/633/65_633_1643/_pdf
• 本文言語コード: ja
• データソース種別:
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  • NDL
  • Crossref
  • CiNii Articles
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