Numerical simulation of bubble size distribution of aluminum foams in liquid state

被引：0
|
作者：
Xie M. [1 ]
Li K. [1 ,2 ,3 ]
机构：
[1] Department of Power Engineer, Dalian University of Technology, Dalian
[2] School of Energy and Environment Engineering, Inner Mongolia University of Science and Technology, Baotou
[3] School of Aerospace, Tsinghua University
来源：
Jiangsu Daxue Xuebao (Ziran Kexue Ban)/Journal of Jiangsu University (Natural Science Edition) | 2010年 / 31卷 / 04期
关键词：
Bubble size distribution; Drainage; Foamed aluminum; Polyhedron; Porosity;
D O I：
10.3969/j.issn.1671-7775.2010.04.012
中图分类号：
学科分类号：
摘要：
A mathematical model for predicting the evolution of bubble size distribution was presented, which took into account of the effects of both the coarsening due to gas diffusion between bubbles and the liquid drainage. A bubble size distribution equation and a one-dimensional drainage equation were solved coupled by a finite difference approach. Comparison with experimental results from the literature shows a reasonable agreement. The model predictions indicate that the bubble size increases exponentially with time which is in good agreement with MacPherson's theory. Further computational results reveal that bubble size distributions are dependent strongly on the drainage behavior, the Henry constant, gas diffusivity and surface tension of the aluminum foam in liquid state.
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收藏
页码：427 / 431
页数：4
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