Influence of microbubble diameter and distribution on frictional resistance reduction

Investigations into frictional resistance reduction by microbubbles were carried out using a two-dimensional channel. The flow velocity and the amount of air injected were varied, and the frictional resistance reduction was measured. The frictional resistance reduction increased with increasing mean...

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Bibliographic Details
Published inJournal of marine science and technology Vol. 7; no. 2; pp. 79 - 85
Main Authors Moriguchi, Yasuhiro, Kato, Hiroharu
Format Journal Article
LanguageEnglish
Published Tokyo Springer Nature B.V 01.09.2002
Subjects
Flow velocity
Geophysics
Void ratio
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Summary:Investigations into frictional resistance reduction by microbubbles were carried out using a two-dimensional channel. The flow velocity and the amount of air injected were varied, and the frictional resistance reduction was measured. The frictional resistance reduction increased with increasing mean void ratio. When the bubble diameter was changed, the influence on frictional resistance reduction was negligible. The influence of bubble distribution near a wall was also investigated. Although it is thought that the influence of microbubbles near a wall is large, further investigations are required.[PUBLICATION ABSTRACT]
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0948-4280
1437-8213
DOI:10.1007/s007730200015