Cumulative distribution functions associated with bubble-nucleation processes in cavitation

被引:27
|
作者
Watanabe, Hiroshi [1 ]
Suzuki, Masaru [2 ]
Ito, Nobuyasu [3 ]
机构
[1] Univ Tokyo, Supercomp Div, Ctr Informat Technol, Bunkyo Ku, Tokyo 1138658, Japan
[2] Kyushu Univ, Dept Appl Quantum Phys & Nucl Engn, Nishi Ku, Fukuoka 8190395, Japan
[3] Univ Tokyo, Sch Engn, Dept Appl Phys, Bunkyo Ku, Tokyo 1138656, Japan
来源
PHYSICAL REVIEW E | 2010年 / 82卷 / 05期
关键词
LIQUID;
D O I
10.1103/PhysRevE.82.051604
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
Bubble-nucleation processes of a Lennard-Jones liquid are studied by molecular dynamics simulations. Waiting time, which is the lifetime of a superheated liquid, is determined for several system sizes, and the apparent finite-size effect of the nucleation rate is observed. From the cumulative distribution function of the nucleation events, the bubble-nucleation process is found to be not a simple Poisson process but a Poisson process with an additional relaxation time. The parameters of the exponential distribution associated with the process are determined by taking the relaxation time into account, and the apparent finite-size effect is removed. These results imply that the use of the arithmetic mean of the waiting time until a bubble grows to the critical size leads to an incorrect estimation of the nucleation rate.
引用
收藏
页数:5
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