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International Journal of Fluid Mechanics Research

年間 6 号発行

ISSN 印刷: 2152-5102

ISSN オンライン: 2152-5110

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 1.1 To calculate the five year Impact Factor, citations are counted in 2017 to the previous five years and divided by the source items published in the previous five years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) 5-Year IF: 1.3 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.0002 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.33 SJR: 0.256 SNIP: 0.49 CiteScore™:: 2.4 H-Index: 23

Indexed in

On the Spherically Symmetric Phase Change Problem

巻 26, 発行 2, 1999, pp. 110-145
DOI: 10.1615/InterJFluidMechRes.v26.i2.10
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要約

Using the energy integral method, an analysis of the spherically symmetric phase change (moving boundary) problems is presented. The expression derived for the temperature gradient shows the effects of both the interfacial area change and the curvature. The results show that the thermal boundary layer from a growing sphere is thinner than that corresponding to a collapsing one.
The solution of the energy equation is then used to analyze the thermal diffusion-controlled bubble (or droplet) growth or collapse problem. The expression derived for the radial velocity takes into account the effects of (a) the Jakob number, (b) the interfacial area change and (c) the curvature. It is shown that (a) for large values of the Jakob number, the radius depends upon the first power of the Jakob number, (b) for small values of the Jakob number it is a function of the square root of this number, and (c) although widely used in the literature, an application of the "thin thermal boundary layer" model to cavitation, i.e., to collapsing bubbles, is incorrect, particularly at low Jakob numbers.
Finally, it is demonstrated that analyzes of bubble dynamics based on the energy integral method are in error because the assumed temperature profile was incorrect. It is shown that this erroneous temperature distribution can result in a 100% error when computing the temperature gradient at the interface.
Although the analysis presented in this paper is formulated by considering the thermal diffusion of energy, the same analysis and results with an appropriate redefinition of property terms can be applied to a spherically symmetric mass diffusion problem with a moving boundary.

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