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- Title
微小蒸気泡の安定性に関する分子動力学解析.
- Authors
伊 藤 和 宏; 木 佐 悠; 山 本 拓 司; 前 田 光 治
- Abstract
We investigate the vapor bubble stability in liquid argon and water using a molecular dynamics simulation. The Lennard--Jones interparticle interaction potential is used to simulate the interaction forces between molecules. The Stillinger's cluster criterion is employed to classify the vapor molecules evaporated from the bulk liquid. Using this criterion, the vapor molecules are determined to have no neighboring molecules within a 1.23 to 1.32o radius, where o is the interaction radius in the L-J potential. The pressure of vapor and liquid phase can be calculated from the virial equation of sate. The stability of bubble is disscussed applying the Young-Laplace equation. The spherical bubble shape is maintained, when the liquid pressure takes the negative value. The thickness of vapor-liquid interface and the number of molecules across vapor-liquid interface are not proportional to the size of bubbles.
- Publication
Japanese Journal of Multiphase Flow, 2018, Vol 32, Issue 1, p43
- ISSN
0914-2843
- Publication type
Article