Bubble nucleation in liquid oxygen

Takashi Tokumasu, Kenjiro Kamijo, Mamoru Oike, Yoichiro Matsumoto

Research output: Contribution to journalArticlepeer-review


In this paper, bubble formations in liquid oxygen are simulated by the Molecular Dynamics (MD) method. Simulations are performed assuming that there are both monatomic and diatomic oxygen molecules. Lennard-Jones (LJ) potential is used as the intermolecular potential of monatomic molecules and the intermolecular potential of diatomic molecules are assumed to be the sum of the interatomic potentials acting on each atom of a molecule. These parameters are determined based on the intermolecular potential of monatomic molecules. Simulations are carried out at various temperatures and number densities. The results of these simulations are compared with each other in order to investigate the effect of the internal degree of freedom of diatomic molecules on the bubble generation. Consequently, the number density of diatomic liquid oxygen at which the bubble is generated is higher than that of monatomic liquid oxygen because of the internal degree of freedom.

Original languageEnglish
Pages (from-to)1197-1202
Number of pages6
JournalAmerican Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED
Publication statusPublished - 2000 Dec 1

ASJC Scopus subject areas

  • Engineering(all)


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