### Abstract

Bubble nucleation phenomenon in presence of gas impurities is studied by microcanonical molecular dynamics simulation for Lennard-Jones fluid. First, we investigate effect of molecular diameter of dissolved gas on the nucleation rate with pressure change. As a result, we find increase of the nucleation rate with increase of the pressure, which we call "inverse" pressure phenomenon, when interaction of dissolved gas is very weak. In this case, we confirm that a gas with the larger diameter enhances composition fluctuation or phase separation. Next, we estimate effect of the diameter on spinodal point through calculation of equation of state (EOS), and confirm that effect of the diameter on spinodal point at low temperature range becomes larger as the interaction of dissolved gas becomes weaker. Finally, we examine applicability of the superheat ratio expressed by saturation pressure and spinodal pressure, and confirm its validity to explain the inverse change of the nucleation rate.

Original language | English |
---|---|

Pages (from-to) | 1893-1900 |

Number of pages | 8 |

Journal | Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B |

Volume | 71 |

Issue number | 707 |

DOIs | |

Publication status | Published - Jul 2005 |

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### All Science Journal Classification (ASJC) codes

- Condensed Matter Physics
- Mechanical Engineering

### Cite this

*Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B*,

*71*(707), 1893-1900. https://doi.org/10.1299/kikaib.71.1893

**Inverse phenomenon of nucleation rate in binary liquid-gas mixtures (molecular dynamics study of molecular diameter dependence on the inverse phenomenon).** / Tsuda, Shinichi; Tokumasu, Takashi; Takagi, Shu; Matsumoto, Yoichiro.

Research output: Contribution to journal › Article

*Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B*, vol. 71, no. 707, pp. 1893-1900. https://doi.org/10.1299/kikaib.71.1893

}

TY - JOUR

T1 - Inverse phenomenon of nucleation rate in binary liquid-gas mixtures (molecular dynamics study of molecular diameter dependence on the inverse phenomenon)

AU - Tsuda, Shinichi

AU - Tokumasu, Takashi

AU - Takagi, Shu

AU - Matsumoto, Yoichiro

PY - 2005/7

Y1 - 2005/7

N2 - Bubble nucleation phenomenon in presence of gas impurities is studied by microcanonical molecular dynamics simulation for Lennard-Jones fluid. First, we investigate effect of molecular diameter of dissolved gas on the nucleation rate with pressure change. As a result, we find increase of the nucleation rate with increase of the pressure, which we call "inverse" pressure phenomenon, when interaction of dissolved gas is very weak. In this case, we confirm that a gas with the larger diameter enhances composition fluctuation or phase separation. Next, we estimate effect of the diameter on spinodal point through calculation of equation of state (EOS), and confirm that effect of the diameter on spinodal point at low temperature range becomes larger as the interaction of dissolved gas becomes weaker. Finally, we examine applicability of the superheat ratio expressed by saturation pressure and spinodal pressure, and confirm its validity to explain the inverse change of the nucleation rate.

AB - Bubble nucleation phenomenon in presence of gas impurities is studied by microcanonical molecular dynamics simulation for Lennard-Jones fluid. First, we investigate effect of molecular diameter of dissolved gas on the nucleation rate with pressure change. As a result, we find increase of the nucleation rate with increase of the pressure, which we call "inverse" pressure phenomenon, when interaction of dissolved gas is very weak. In this case, we confirm that a gas with the larger diameter enhances composition fluctuation or phase separation. Next, we estimate effect of the diameter on spinodal point through calculation of equation of state (EOS), and confirm that effect of the diameter on spinodal point at low temperature range becomes larger as the interaction of dissolved gas becomes weaker. Finally, we examine applicability of the superheat ratio expressed by saturation pressure and spinodal pressure, and confirm its validity to explain the inverse change of the nucleation rate.

UR - http://www.scopus.com/inward/record.url?scp=26244456355&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=26244456355&partnerID=8YFLogxK

U2 - 10.1299/kikaib.71.1893

DO - 10.1299/kikaib.71.1893

M3 - Article

AN - SCOPUS:26244456355

VL - 71

SP - 1893

EP - 1900

JO - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B

JF - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B

SN - 0387-5016

IS - 707

ER -