Study on Contraction and Disappearance of a Bubble in Oils

To obtain the fundamental knowledge on aeration or cavitation of oils, a bubble in oils, which contracted or disappeared due to surface tension, was observed under a microscope. Therefrom it is clear that adding additives and/or impurities to petroleum base oils makes the time required for a bubble...

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Bibliographic Details
Published in:Bulletin of JSME 1983, Vol.26(216), pp.993-998
Main Authors: YAMAGUCHI, Atsushi, HAYASHI, Katsuyuki, Piao, He Che
Format: Article
Language:English
Subjects:
Additives
Aeration
Bubble
Cavitation
Diffusion
Interfacial Resistance
Oil
Residual Bubble
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Summary:To obtain the fundamental knowledge on aeration or cavitation of oils, a bubble in oils, which contracted or disappeared due to surface tension, was observed under a microscope. Therefrom it is clear that adding additives and/or impurities to petroleum base oils makes the time required for a bubble to disappear longer ; and that an oxided substance a silicone defoamer, etc. can produce minute bubbles having a long life. Also, it is shown that the theory considering the interfacial resistance to diffusion due to adsorbed substances can explain the test results.
ISSN:0021-3764
1881-1426
DOI:10.1299/jsme1958.26.993