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Multiphase Science and Technology

年間 4 号発行

ISSN 印刷: 0276-1459

ISSN オンライン: 1943-6181

SJR: 0.144 SNIP: 0.256 CiteScore™:: 1.1 H-Index: 24

Indexed in

A NOTE ON THE BUBBLE GROWTH FORCE

巻 12, 発行 3&4, 2000, 18 pages
DOI: 10.1615/MultScienTechn.v12.i3-4.130
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要約

A boiling bubble at the verge of detaching from a plane, infinite wall experiences a hydrodynamic force due to its expansion, Fx. Such a bubble is modelled as a pair of spheres with radius R and growth rate R' in inviscid liquid, and Fx is computed using the Lagally theorem. The form of the Lagally theorem used differs in one term from an expression found in the literature. The exact expression for Fx is simplified in order to derive a simple expression that facilitates the prediction of detachment. In the case of diffusion controlled bubble growth, Fx is shown to be approximately given by c2πρLR2R'2, where ρL is the liquid mass density and c2 ~ 1.11. This prediction is compared with experimental fits of the literature.

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