Multiscale Simulation of Surface Nanostructure Effect on Bubble Nucleation
Abstract
Effects of nanostructured defects of copper solid surface on the bubble growth in liquid argon have been investigated through a hybrid atomistic-continuum method. The same solid surfaces with five different nanostructures, namely, wedge defect, deep rectangular defect (R-I), shallow rectangular defect (R-II), small rectangular defect (R-III) and no defect, have been modeled at molecular level. The liquid argon is placed on top of the hot solid copper with superheat of 30 K after equilibration is achieved with CFD-MD coupled simulation. Phase change of argon on five nanostructures has been observed and analyzed accordingly. The results showed that the solid surface with wedge defect tends to induce a nano-bubble relatively more easily than the others, and the larger the size of the defect is the easier the bubble generate.
Keywords
Cite
@article{arxiv.1705.05221,
title = {Multiscale Simulation of Surface Nanostructure Effect on Bubble Nucleation},
author = {Yijin Mao and Bo Zhang and Chung-Lung Chen and Yuwen Zhang},
journal= {arXiv preprint arXiv:1705.05221},
year = {2017}
}