A molecular dynamics approach for nucleation-growth of cryogenic cavitation

Shinichi Tsuda; Taiga Komatsu; Shu Takagi; Yoichiro Matsumoto

doi:10.1115/AJK2011-33016

A molecular dynamics approach for nucleation-growth of cryogenic cavitation

Shinichi Tsuda, Taiga Komatsu, Shu Takagi, Yoichiro Matsumoto

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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.

Original language	English
Title of host publication	ASME-JSME-KSME 2011 Joint Fluids Engineering Conference, AJK 2011
Pages	231-236
Number of pages	6
Volume	2
DOIs	https://doi.org/10.1115/AJK2011-33016
Publication status	Published - Dec 1 2011
Externally published	Yes
Event	ASME-JSME-KSME 2011 Joint Fluids Engineering Conference, AJK 2011 - Hamamatsu, Japan Duration: Jul 24 2011 → Jul 29 2011

Other

Other	ASME-JSME-KSME 2011 Joint Fluids Engineering Conference, AJK 2011
Country	Japan
City	Hamamatsu
Period	7/24/11 → 7/29/11

All Science Journal Classification (ASJC) codes

Fluid Flow and Transfer Processes

Access to Document

10.1115/AJK2011-33016

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Tsuda, S., Komatsu, T., Takagi, S., & Matsumoto, Y. (2011). A molecular dynamics approach for nucleation-growth of cryogenic cavitation. In ASME-JSME-KSME 2011 Joint Fluids Engineering Conference, AJK 2011 (Vol. 2, pp. 231-236) https://doi.org/10.1115/AJK2011-33016

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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 Nos{\'e}-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.",

author = "Shinichi Tsuda and Taiga Komatsu and Shu Takagi and Yoichiro Matsumoto",

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N2 - 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.

AB - 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.

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