Mechanism of Cloud Cavitation and Its Control
-
- Tanimura Masaharu
- 東京大学工学系研究科
-
- Kato Hiroharu
- 東京大学工学系研究科
-
- Maeda Masatsugu
- 東京大学工学系研究科
-
- Tagaya Yoshinori
- 東京大学工学系研究科
-
- Yamaguchi Hajime
- 東京大学工学系研究科
-
- Kawanami Yasutaka
- 東京大学工学系研究科
Bibliographic Information
- Other Title
-
- 翼型のクラウドキャビテーションの発生機構とその制御
- ヨクガタ ノ クラウド キャビテーション ノ ハッセイ キコウ ト ソノ セイ
Search this article
Description
This paper describes the experimental result of cloud cavitation on a two-dimensional foil. Cloud cavitation was observed by a high speed camera and a high speed video camera to know the mechanism of cloud cavitation. Ink was injected to investigate the reserve flow (re-entrant jet) at the bottom of the sheet cavity. The flow around the sheet cavity was measured by a laser doppler velocimeter. By applying conditional sampling technique on the flow measurement, unsteady flow field was examined with the motion of cloud cavitation.<BR>A small square bar was attached on the foil surface and the effect on the cloud cavitation was investigated.<BR>The conclusion are as follows : <BR>(1) The shedding of cloud cavitation is caused by re-entrant jet. <BR>(2) The re-entrant jet starts at the rear center of a sheet cavity and spreads to the leading edge.The re-entrant jet disturbs the sheet cavity and the sheet cavity collapses into a mass of bubbly cavities. When the re-entrant jet reaches the cavity leading edge, the shedding of cloud cavity occurs.<BR>(3) A bar attached on the foil surface reduces the re-entrant flow, resulting in the reduction of cloud cavitation shedding. A ditch on the foil surface gives the similar effect on the cloud cavitation.
Journal
-
- Journal of the Society of Naval Architects of Japan
-
Journal of the Society of Naval Architects of Japan 1995 (178), 41-50, 1995
The Japan Society of Naval Architects and Ocean Engineers
- Tweet
Details 詳細情報について
-
- CRID
- 1390282679072437632
-
- NII Article ID
- 110003861998
-
- NII Book ID
- AN00194094
-
- ISSN
- 18842070
- 05148499
-
- NDL BIB ID
- 3925668
-
- Data Source
-
- JaLC
- NDL
- Crossref
- NDL-Digital
- CiNii Articles
-
- Abstract License Flag
- Disallowed