期刊
JOURNAL OF SCIENTIFIC COMPUTING
卷 19, 期 1-3, 页码 163-182出版社
KLUWER ACADEMIC/PLENUM PUBL
DOI: 10.1023/A:1025347823928
关键词
unstable boiling; front tracking; microgravity; liquid/vapor phase change
Dynamics of the explosive growth of a vapor bubble in microgravity is investigated by direct numerical simulation. A front tracking/finite difference technique is used to solve for the velocity and the temperature field in both phases and to account for inertia, viscosity, and surface deformation. The method is validated by comparison of the numerical results with the available analytical formulations such as the evaporation of a one-dimensional liquid/vapor interface, frequency of oscillations of capillary waves, and other numerical results. Evolution of a three-dimensional vapor nucleus during explosive boiling is followed and a fine scale structure similar to experimental results is observed. Two-dimensional simulations yield a similar qualitative instability growth.
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