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A Molecular Dynamics Approach for Nucleation-Growth of Cryogenic Cavitation

[+] Author Affiliations
Shin-ichi Tsuda

Shinshu University, Nagano City, Nagano, Japan

Taiga Komatsu, Shu Takagi, Yoichiro Matsumoto

The University of Tokyo, Bunkyo-ku, Tokyo, Japan

Paper No. AJK2011-33016, pp. 231-236; 6 pages
doi:10.1115/AJK2011-33016
From:
  • ASME-JSME-KSME 2011 Joint Fluids Engineering Conference
  • ASME-JSME-KSME 2011 Joint Fluids Engineering Conference: Volume 2, Fora
  • Hamamatsu, Japan, July 24–29, 2011
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 978-0-7918-4441-0
  • Copyright © 2011 by JSME

abstract

The growth of cavitation bubble nuclei in a metastable state in liquid argon, as one of cryogenic fluids, was investigated using a Molecular Dynamics (MD) simulation with a Nosé-Hoover chain thermostat. We observed rapid growth of bubble nuclei with weak inter-bubble interaction in the early stage, while observed a competing coarsening that looks like Ostwald ripening in the late stage and its growth exponent n became 0.51. We compared the present MD result with that in an adiabatic simulation (Energy-constant MD without any thermostats), and the influence of the field temperature was discussed. Also, we compared the present MD results with a coarsening theory for droplets, and discussed the characteristics of the coarsening mechanism of bubble nuclei.

Copyright © 2011 by JSME

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