キャビテーション壊食に及ぼす液体の空気含有度と蒸気圧の影響

Material type: 文書・図像類

Author: 服部, 修次ほか

Publisher: 社団法人日本機械学会

Publication date: 2002-11-25

Material Format: Digital

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Note (General)：: Cavitation erosion tests were performed in deaerated and aerated water, in water at various temperatures, in water/ethanol mixtures and in various kin...

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Material Type: 文書・図像類
Title: キャビテーション壊食に及ぼす液体の空気含有度と蒸気圧の影響
Author/Editor: 服部, 修次
田中, 雄
HATTORI, Shuji
TANAKA, Yu
Author Heading: 服部, 修次
田中, 雄
HATTORI, Shuji
TANAKA, Yu
Publication, Distribution, etc.: 社団法人日本機械学会
Publication Date: 2002-11-25
Publication Date (W3CDTF): 2002-11-25
Alternative Title: Influence of Air Content and Vapor Pressure of Liquids on Cavitation Erosion
Periodical title: 日本機械学会論文集.B編
No. or year of volume/issue: 68 675
Volume: 68
Issue: 675
Pages: 3080-3086
Text Language Code: jpn
Subject Heading: Cavitation Erosion
Cavitation
Nonferrous Metal
Liquid Properties
Air Content
Vapor Pressure
Target Audience: 一般
Note (General): Cavitation erosion tests were performed in deaerated and aerated water, in water at various temperatures, in water/ethanol mixtures and in various kinds of organic liquids, the impact loads by collapsing bubbles were measured with the pressure detector. The volume loss curves do not change with the type of water such as deaerated and aerated water, and a similar trend was observed for the results of the pressure distribution. A further increase in the air content decreases the volume loss causing a cushioning effect of bubble collapses. The cavitation erosion increases with increased vapor pressure and reaches a peak, followed by a decrease. The initial increase is due to the increased number of bubbles. Thus, cavitation erosion mainly affected by both air content a and vapor pressure Pν of liquid properties. The volume loss rate can be described as Pν^<0.38>・e^<-0.49a>. A critical rate air content is found to be 1.6, below which the air content does no longer affect the volume loss rate. It was found that the volume loss rate shows a good correlation with ΣF^2_1/(pc), where F_1 is the impact load, p the density and c the sound velocity in the liquid.
Access Restrictions: 限定公開
Rights (production): 社団法人日本機械学会
Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）
https://irdb.nii.ac.jp
Original Data Provider (Database): 福井大学 : 福井大学学術機関リポジトリ