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.
|Number of pages||6|
|Journal||American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED|
|Publication status||Published - 2000 Dec 1|
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